Self-organization of amphiphilic liquid-crystalline dendrimers in bulk and at the interface

被引：1
|
作者：
Boiko, N. I. [1 ]
Leshchiner, I. D. [1 ]
Agina, E. V. [2 ]
Richardson, R. [3 ]
Shibaev, V. P.
机构：
[1] Moscow MV Lomonosov State Univ, Fac Chem, Moscow 119991, Russia
[2] Russian Acad Sci, Inst Synthet Polymer Mat, Moscow 117393, Russia
[3] Univ Bristol, HH Wills Phys Lab, Sch Phys, Bristol BS8 1TL, Avon, England
来源：
POLYMER SCIENCE SERIES A | 2011年 / 53卷 / 08期
关键词：
CARBOSILANE DENDRIMERS; MESOMORPHISM; LANGMUIR; BEHAVIOR; MONOLAYERS; PHASE; FILMS;
D O I：
10.1134/S0965545X11080013
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A comparative analysis of the structure and phase behavior of synthesized carbosilane amphiphilic LC dendrimers of the third generation containing mesogenic phenyl and oligo(ethylene glycol) fragments is performed. When phenol groups are replaced with oligo(ethylene glycol) moieties, the temperature interval of the existence of the LC phase in the mesogen-containing dendrimers decreases. The chemical nature of hydrophilic terminal groups is found to control the organization of dendrimers in the smectic mesophase. Structural models for their packing are proposed. Amphiphilic dendrimers are shown to form stable Langmuir films at the water/air interface. Surface-pressure-surface area-isotherms are constructed. The effect of the chemical nature of hydrophilic groups on the formation of a monolayer at the interface and on the packing density of dendrimer molecules in the monolayer is discussed.
引用
收藏
页码：645 / 654
页数：10
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