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Adsorbed layer structure of cationic gemini and corresponding monomeric surfactants on mica

Identifieur interne : 001C83 ( PascalFrancis/Curation ); précédent : 001C82; suivant : 001C84

Adsorbed layer structure of cationic gemini and corresponding monomeric surfactants on mica

Auteurs : Franck P. Duval [Australie] ; Raoul Zana [France] ; Gregory G. Warr [Australie]

Source :

RBID : Pascal:06-0248281

Descripteurs français

English descriptors

Abstract

We report a comprehensive study of the adsorbed layer morphologies of cationic gemini surfactants of the type dodecanediyl-a,w-bis(dimethylalkylammonium bromide) and their corresponding monomers, dimethyldodecylalkylammonium bromide, on mica using atomic force microscopy soft-contact imaging. As in the bulk, aggregate curvature of the adsorbed geminis is found to increase with increasing spacer length, but the adsorbed aggregate curvature also increases in the presence of CsCl and CsBr. The monomeric surfactants exhibit an unexpected transition from globular adsorbed aggregates to a bilayer when the alkyl side chain reaches butyl, and this transition is also sensitive to added electrolyte.
pA  
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A06       @2 3
A08 01  1  ENG  @1 Adsorbed layer structure of cationic gemini and corresponding monomeric surfactants on mica
A11 01  1    @1 DUVAL (Franck P.)
A11 02  1    @1 ZANA (Raoul)
A11 03  1    @1 WARR (Gregory G.)
A14 01      @1 School of Chemistry, The University of Sydney @2 Sydney, NSW 2006 @3 AUS @Z 1 aut. @Z 3 aut.
A14 02      @1 Institut Charles Sadron (CNRS-ULP), 6 rue Boussingault @2 67000 Strasbourg @3 FRA @Z 2 aut.
A20       @1 1143-1149
A21       @1 2006
A23 01      @0 ENG
A43 01      @1 INIST @2 20642 @5 354000156597340440
A44       @0 0000 @1 © 2006 INIST-CNRS. All rights reserved.
A45       @0 42 ref.
A47 01  1    @0 06-0248281
A60       @1 P
A61       @0 A
A64 01  1    @0 Langmuir
A66 01      @0 USA
C01 01    ENG  @0 We report a comprehensive study of the adsorbed layer morphologies of cationic gemini surfactants of the type dodecanediyl-a,w-bis(dimethylalkylammonium bromide) and their corresponding monomers, dimethyldodecylalkylammonium bromide, on mica using atomic force microscopy soft-contact imaging. As in the bulk, aggregate curvature of the adsorbed geminis is found to increase with increasing spacer length, but the adsorbed aggregate curvature also increases in the presence of CsCl and CsBr. The monomeric surfactants exhibit an unexpected transition from globular adsorbed aggregates to a bilayer when the alkyl side chain reaches butyl, and this transition is also sensitive to added electrolyte.
C02 01  X    @0 001C01
C03 01  X  FRE  @0 Structure @5 01
C03 01  X  ENG  @0 Structure @5 01
C03 01  X  SPA  @0 Estructura @5 01
C03 02  X  FRE  @0 Agent surface @2 FX @5 02
C03 02  X  ENG  @0 Surfactant @2 FX @5 02
C03 02  X  SPA  @0 Agente superficie @2 FX @5 02
C03 03  X  FRE  @0 Mica @5 03
C03 03  X  ENG  @0 Mica @5 03
C03 03  X  SPA  @0 Mica @5 03
C03 04  X  FRE  @0 Morphologie @5 04
C03 04  X  ENG  @0 Morphology @5 04
C03 04  X  SPA  @0 Morfología @5 04
C03 05  X  FRE  @0 Agent surface cationique @5 05
C03 05  X  ENG  @0 Cationic surfactant @5 05
C03 05  X  SPA  @0 Agente superficie catiónico @5 05
C03 06  X  FRE  @0 Bromure @2 NA @5 06
C03 06  X  ENG  @0 Bromides @2 NA @5 06
C03 06  X  SPA  @0 Bromuro @2 NA @5 06
C03 07  X  FRE  @0 Monomère @5 07
C03 07  X  ENG  @0 Monomer @5 07
C03 07  X  SPA  @0 Monómero @5 07
C03 08  X  FRE  @0 Microscopie force atomique @5 08
C03 08  X  ENG  @0 Atomic force microscopy @5 08
C03 08  X  SPA  @0 Microscopía fuerza atómica @5 08
C03 09  X  FRE  @0 Formation image @5 09
C03 09  X  ENG  @0 Imaging @5 09
C03 09  X  SPA  @0 Formación imagen @5 09
C03 10  X  FRE  @0 Agrégat @5 10
C03 10  X  ENG  @0 Aggregate @5 10
C03 10  X  SPA  @0 Agregado @5 10
C03 11  X  FRE  @0 Courbure @5 11
C03 11  X  ENG  @0 Curvature @5 11
C03 11  X  SPA  @0 Curvatura @5 11
C03 12  X  FRE  @0 Couche bimoléculaire @5 12
C03 12  X  ENG  @0 Bilayer @5 12
C03 12  X  SPA  @0 Capa bimolecular @5 12
C03 13  X  FRE  @0 Alkyle @5 13
C03 13  X  ENG  @0 Alkyl @5 13
C03 13  X  SPA  @0 Alquilo @5 13
C03 14  X  FRE  @0 Electrolyte @5 14
C03 14  X  ENG  @0 Electrolyte @5 14
C03 14  X  SPA  @0 Electrolito @5 14
C03 15  X  FRE  @0 Agent surface gemini @4 CD @5 96
C03 15  X  ENG  @0 Gemini surfactant @4 CD @5 96
C07 01  X  FRE  @0 Agent surface ionique @5 15
C07 01  X  ENG  @0 Ionic surfactant @5 15
C07 01  X  SPA  @0 Agente superficie iónica @5 15
N21       @1 156
N44 01      @1 OTO
N82       @1 OTO

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Le document en format XML

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<s5>06</s5>
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<s5>07</s5>
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<s5>08</s5>
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<s0>Formation image</s0>
<s5>09</s5>
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<s5>09</s5>
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<s5>09</s5>
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<s5>10</s5>
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<s5>10</s5>
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<s5>11</s5>
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<s5>11</s5>
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<s5>13</s5>
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<s5>13</s5>
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<s0>Electrolyte</s0>
<s5>14</s5>
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<s5>14</s5>
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<s5>14</s5>
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<fC03 i1="15" i2="X" l="FRE">
<s0>Agent surface gemini</s0>
<s4>CD</s4>
<s5>96</s5>
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<s4>CD</s4>
<s5>96</s5>
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<s0>Agent surface ionique</s0>
<s5>15</s5>
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<s0>Ionic surfactant</s0>
<s5>15</s5>
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   |area=    AustralieFrV1
   |flux=    PascalFrancis
   |étape=   Curation
   |type=    RBID
   |clé=     Pascal:06-0248281
   |texte=   Adsorbed layer structure of cationic gemini and corresponding monomeric surfactants on mica
}}
Wicri

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