Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains
Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settle...
Ausführliche Beschreibung
Gespeichert in:
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E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1991 |
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| Reproduktion: |
Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 |
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| Übergeordnetes Werk: |
in: Journal of Fluorine Chemistry - Amsterdam : Elsevier, 54(1991), 1-3, Seite 182 |
| Übergeordnetes Werk: |
volume:54 ; year:1991 ; number:1-3 ; pages:182 |
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| 520 | |a Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. | ||
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(DE-627)NLEJ175714975 (DE-599)GBVNLZ175714975 DE-627 ger DE-627 rakwb eng Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Cambon, A. oth Watzke, H.J. oth Szoznyl, S. oth in Journal of Fluorine Chemistry Amsterdam : Elsevier 54(1991), 1-3, Seite 182 (DE-627)NLEJ175525072 (DE-600)1491286-7 0022-1139 nnns volume:54 year:1991 number:1-3 pages:182 http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 54 1991 1-3 182 |
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(DE-627)NLEJ175714975 (DE-599)GBVNLZ175714975 DE-627 ger DE-627 rakwb eng Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Cambon, A. oth Watzke, H.J. oth Szoznyl, S. oth in Journal of Fluorine Chemistry Amsterdam : Elsevier 54(1991), 1-3, Seite 182 (DE-627)NLEJ175525072 (DE-600)1491286-7 0022-1139 nnns volume:54 year:1991 number:1-3 pages:182 http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 54 1991 1-3 182 |
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(DE-627)NLEJ175714975 (DE-599)GBVNLZ175714975 DE-627 ger DE-627 rakwb eng Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Cambon, A. oth Watzke, H.J. oth Szoznyl, S. oth in Journal of Fluorine Chemistry Amsterdam : Elsevier 54(1991), 1-3, Seite 182 (DE-627)NLEJ175525072 (DE-600)1491286-7 0022-1139 nnns volume:54 year:1991 number:1-3 pages:182 http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 54 1991 1-3 182 |
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(DE-627)NLEJ175714975 (DE-599)GBVNLZ175714975 DE-627 ger DE-627 rakwb eng Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Cambon, A. oth Watzke, H.J. oth Szoznyl, S. oth in Journal of Fluorine Chemistry Amsterdam : Elsevier 54(1991), 1-3, Seite 182 (DE-627)NLEJ175525072 (DE-600)1491286-7 0022-1139 nnns volume:54 year:1991 number:1-3 pages:182 http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 54 1991 1-3 182 |
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(DE-627)NLEJ175714975 (DE-599)GBVNLZ175714975 DE-627 ger DE-627 rakwb eng Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains 1991 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. Elsevier Journal Backfiles on ScienceDirect 1907 - 2002 Cambon, A. oth Watzke, H.J. oth Szoznyl, S. oth in Journal of Fluorine Chemistry Amsterdam : Elsevier 54(1991), 1-3, Seite 182 (DE-627)NLEJ175525072 (DE-600)1491286-7 0022-1139 nnns volume:54 year:1991 number:1-3 pages:182 http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1 GBV_USEFLAG_H ZDB-1-SDJ GBV_NL_ARTICLE AR 54 1991 1-3 182 |
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Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains |
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Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. |
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Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. |
| abstract_unstemmed |
Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields. |
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<?xml version="1.0" encoding="UTF-8"?><collection xmlns="http://www.loc.gov/MARC21/slim"><record><leader>01000caa a22002652 4500</leader><controlfield tag="001">NLEJ175714975</controlfield><controlfield tag="003">DE-627</controlfield><controlfield tag="005">20230506101259.0</controlfield><controlfield tag="007">cr uuu---uuuuu</controlfield><controlfield tag="008">070505s1991 xx |||||o 00| ||eng c</controlfield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-627)NLEJ175714975</subfield></datafield><datafield tag="035" ind1=" " ind2=" "><subfield code="a">(DE-599)GBVNLZ175714975</subfield></datafield><datafield tag="040" ind1=" " ind2=" "><subfield code="a">DE-627</subfield><subfield code="b">ger</subfield><subfield code="c">DE-627</subfield><subfield code="e">rakwb</subfield></datafield><datafield tag="041" ind1=" " ind2=" "><subfield code="a">eng</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Perfluoroalkyl bilayer membranes prepared from new bitailed ampiiipiiiles with fluorocarbon chains</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">1991</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zzz</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">z</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">nicht spezifiziert</subfield><subfield code="b">zu</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Liposomes and vesicles have more and more applications. F-alkylated surfactants are able to give new vesicles with higher performances, specially to the level of phase transition temperature, spontaneous aggregation in bilayers, ion exchange, permeability of gases, ability to encapsulation.We settled new strategies to prepare ammonium-type perfluoroalkyl bitailed surfactants easy to work up. We obtained with good yields new homogeneous series of amphiphiles characterized by the presence of two modulable tails R"H/R"F or R"F/R"F. The synthesis of more than 40 perfluoroalkyl amphiphiles are described. Pefluoro alkylated bilayer membranes show interesting characteristics combining organized aggregate of the bilayer membrane and peculiar physicochemical properties of fluorocarbon compounds.The vesicular behavior of the F-alkylated suffactants were studied in ultra sound treated aqueous dispersions. Stable vesicular aggregates showing unilamellar membrane structure were obtained. Our investigations in this field included studies by quasi-elastic light scattering, freeze fracture electronmicroscopy, differential scanning c,alorimctry and other physico-chcmical methods. The size distribution of the vesicles and their shapes are unchanged over time periods higher than three months. Vesicles obtained from R"H/R"F chain suffactants show spherical shaped aggregates of normal lype while R"F/R'"F chain surfactants exhibit polygon like shapes due to very high phase transition temperatures of the membranes. Some of these new bitailed surfactant are able to give polymerized vesicles with higher performances in new application fields.</subfield></datafield><datafield tag="533" ind1=" " ind2=" "><subfield code="f">Elsevier Journal Backfiles on ScienceDirect 1907 - 2002</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Cambon, A.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Watzke, H.J.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Szoznyl, S.</subfield><subfield code="4">oth</subfield></datafield><datafield tag="773" ind1="0" ind2="8"><subfield code="i">in</subfield><subfield code="t">Journal of Fluorine Chemistry</subfield><subfield code="d">Amsterdam : Elsevier</subfield><subfield code="g">54(1991), 1-3, Seite 182</subfield><subfield code="w">(DE-627)NLEJ175525072</subfield><subfield code="w">(DE-600)1491286-7</subfield><subfield code="x">0022-1139</subfield><subfield code="7">nnns</subfield></datafield><datafield tag="773" ind1="1" ind2="8"><subfield code="g">volume:54</subfield><subfield code="g">year:1991</subfield><subfield code="g">number:1-3</subfield><subfield code="g">pages:182</subfield></datafield><datafield tag="856" ind1="4" ind2="0"><subfield code="u">http://linkinghub.elsevier.com/retrieve/pii/S0022-1139(00)83692-1</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_USEFLAG_H</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">ZDB-1-SDJ</subfield></datafield><datafield tag="912" ind1=" " ind2=" "><subfield code="a">GBV_NL_ARTICLE</subfield></datafield><datafield tag="951" ind1=" " ind2=" "><subfield code="a">AR</subfield></datafield><datafield tag="952" ind1=" " ind2=" "><subfield code="d">54</subfield><subfield code="j">1991</subfield><subfield code="e">1-3</subfield><subfield code="h">182</subfield></datafield></record></collection>
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