Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications
Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more ef...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Otep, Sultan [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
Organic field effect transistor |
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| Übergeordnetes Werk: |
Enthalten in: Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands - saleh, Dalia I ELSEVIER, 2022, physics, materials and applications, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:87 ; year:2020 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.orgel.2020.105986 |
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ELV051934043 |
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| 520 | |a Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. | ||
| 520 | |a Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. | ||
| 650 | 7 | |a Organic field effect transistor |2 Elsevier | |
| 650 | 7 | |a Structure-property relationship |2 Elsevier | |
| 650 | 7 | |a Diketopyrrolopyrrole |2 Elsevier | |
| 650 | 7 | |a Random conjugated polymer |2 Elsevier | |
| 700 | 1 | |a Lin, Yu-Che |4 oth | |
| 700 | 1 | |a Matsumoto, Hidetoshi |4 oth | |
| 700 | 1 | |a Mori, Takehiko |4 oth | |
| 700 | 1 | |a Wei, Kung-Hwa |4 oth | |
| 700 | 1 | |a Michinobu, Tsuyoshi |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |n Elsevier Science |a saleh, Dalia I ELSEVIER |t Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands |d 2022 |d physics, materials and applications |g Amsterdam [u.a.] |w (DE-627)ELV007843747 |
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10.1016/j.orgel.2020.105986 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001191.pica (DE-627)ELV051934043 (ELSEVIER)S1566-1199(20)30375-X DE-627 ger DE-627 rakwb eng 540 VZ 35.00 bkl Otep, Sultan verfasserin aut Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Organic field effect transistor Elsevier Structure-property relationship Elsevier Diketopyrrolopyrrole Elsevier Random conjugated polymer Elsevier Lin, Yu-Che oth Matsumoto, Hidetoshi oth Mori, Takehiko oth Wei, Kung-Hwa oth Michinobu, Tsuyoshi oth Enthalten in Elsevier Science saleh, Dalia I ELSEVIER Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands 2022 physics, materials and applications Amsterdam [u.a.] (DE-627)ELV007843747 volume:87 year:2020 pages:0 https://doi.org/10.1016/j.orgel.2020.105986 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.00 Chemie: Allgemeines VZ AR 87 2020 0 |
| spelling |
10.1016/j.orgel.2020.105986 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001191.pica (DE-627)ELV051934043 (ELSEVIER)S1566-1199(20)30375-X DE-627 ger DE-627 rakwb eng 540 VZ 35.00 bkl Otep, Sultan verfasserin aut Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Organic field effect transistor Elsevier Structure-property relationship Elsevier Diketopyrrolopyrrole Elsevier Random conjugated polymer Elsevier Lin, Yu-Che oth Matsumoto, Hidetoshi oth Mori, Takehiko oth Wei, Kung-Hwa oth Michinobu, Tsuyoshi oth Enthalten in Elsevier Science saleh, Dalia I ELSEVIER Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands 2022 physics, materials and applications Amsterdam [u.a.] (DE-627)ELV007843747 volume:87 year:2020 pages:0 https://doi.org/10.1016/j.orgel.2020.105986 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.00 Chemie: Allgemeines VZ AR 87 2020 0 |
| allfields_unstemmed |
10.1016/j.orgel.2020.105986 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001191.pica (DE-627)ELV051934043 (ELSEVIER)S1566-1199(20)30375-X DE-627 ger DE-627 rakwb eng 540 VZ 35.00 bkl Otep, Sultan verfasserin aut Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Organic field effect transistor Elsevier Structure-property relationship Elsevier Diketopyrrolopyrrole Elsevier Random conjugated polymer Elsevier Lin, Yu-Che oth Matsumoto, Hidetoshi oth Mori, Takehiko oth Wei, Kung-Hwa oth Michinobu, Tsuyoshi oth Enthalten in Elsevier Science saleh, Dalia I ELSEVIER Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands 2022 physics, materials and applications Amsterdam [u.a.] (DE-627)ELV007843747 volume:87 year:2020 pages:0 https://doi.org/10.1016/j.orgel.2020.105986 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.00 Chemie: Allgemeines VZ AR 87 2020 0 |
| allfieldsGer |
10.1016/j.orgel.2020.105986 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001191.pica (DE-627)ELV051934043 (ELSEVIER)S1566-1199(20)30375-X DE-627 ger DE-627 rakwb eng 540 VZ 35.00 bkl Otep, Sultan verfasserin aut Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Organic field effect transistor Elsevier Structure-property relationship Elsevier Diketopyrrolopyrrole Elsevier Random conjugated polymer Elsevier Lin, Yu-Che oth Matsumoto, Hidetoshi oth Mori, Takehiko oth Wei, Kung-Hwa oth Michinobu, Tsuyoshi oth Enthalten in Elsevier Science saleh, Dalia I ELSEVIER Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands 2022 physics, materials and applications Amsterdam [u.a.] (DE-627)ELV007843747 volume:87 year:2020 pages:0 https://doi.org/10.1016/j.orgel.2020.105986 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.00 Chemie: Allgemeines VZ AR 87 2020 0 |
| allfieldsSound |
10.1016/j.orgel.2020.105986 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001191.pica (DE-627)ELV051934043 (ELSEVIER)S1566-1199(20)30375-X DE-627 ger DE-627 rakwb eng 540 VZ 35.00 bkl Otep, Sultan verfasserin aut Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. Organic field effect transistor Elsevier Structure-property relationship Elsevier Diketopyrrolopyrrole Elsevier Random conjugated polymer Elsevier Lin, Yu-Che oth Matsumoto, Hidetoshi oth Mori, Takehiko oth Wei, Kung-Hwa oth Michinobu, Tsuyoshi oth Enthalten in Elsevier Science saleh, Dalia I ELSEVIER Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands 2022 physics, materials and applications Amsterdam [u.a.] (DE-627)ELV007843747 volume:87 year:2020 pages:0 https://doi.org/10.1016/j.orgel.2020.105986 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OLC-PHA 35.00 Chemie: Allgemeines VZ AR 87 2020 0 |
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English |
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Enthalten in Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands Amsterdam [u.a.] volume:87 year:2020 pages:0 |
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Enthalten in Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands Amsterdam [u.a.] volume:87 year:2020 pages:0 |
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Ultrasound-assisted synthesis and biological activity of nanosized supramolecular coordination polymers of silver(I) with chloride, thiocyanate, and 4,4′-bipyridine ligands |
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Diketopyrrolopyrrole–thiophene–methoxythiophene based random copolymers for organic field effect transistor applications |
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Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. |
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Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. |
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Methoxy-substituted thiophene units were incorporated into a diketopyrrolopyrrole and quaterthiophene based copolymer to produce random copolymers. Inclusion of the methoxy group narrowed the optical energy gap of the resulting copolymers owing to the enhanced planar backbone that results in more effective conjugation. At a low loading ratio of 25mol% random copolymer exhibited a hole mobility of ~0.3 cm2 V−1 s−1 comparable to that of the diketopyrrolopyrrole and quaterthiophene based original polymer. Although increasing the methoxy-substituted thiophene ratio in the polymers resulted in decreased molecular weights, it was concluded that incorporation of the methoxy-substituted thiophenes enhanced the hole mobility from 0.02 cm2 V−1 s−1 for 50mol% loading to 0.07 cm2 V−1 s−1 for 100mol% loading. The enhancement was attributed to the formation of pre-aggregates with stronger interchain interactions with increasing backbone coplanarity, resulting in edge-on dominant and bimodal edge-on/face-on molecular packing orientations. The addition of tetramethylammonium iodide as an ionic additive proved not to be an effective method for improving the performance of polymers containing the methoxy-substituted thiophenes, whereas the original polymer displayed a noticeable improvement of the charge transport properties. |
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