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Stabilizing Bolaform Amphiphile Interfacial Assemblies by Introducing Mesogenic Groups
Author(s) -
Wang Mingfeng,
Qiu Dengli,
Zou Bo,
Wu Tao,
Zhang Xi
Publication year - 2003
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200390215
Subject(s) - mesogen , mica , amphiphile , micelle , aqueous solution , supramolecular chemistry , chemical engineering , critical micelle concentration , pyridinium , self assembly , materials science , adsorption , substrate (aquarium) , polymer chemistry , chemistry , copolymer , nanotechnology , molecule , organic chemistry , phase (matter) , composite material , liquid crystalline , oceanography , geology , engineering , polymer
We describe the synthesis and characterization of the mesogen‐bearing bolaform amphiphile 4,4′‐dihydroxybiphenylbis(11‐pyridinium‐ N ‐yl‐undecanoic ester) dibromide (BP‐10) and its solid/liquid interfacial self‐assembly. Cylindrical micelles are directly observed by atomic force microscopy (AFM) at the interface between mica and the aqueous solution above the critical micelle concentration (cmc). In situ and ex situ AFM studies indicate that the cylindrical micelles are stable both at the mica/solution interface and in the dry state. The enhanced stability of the micellar structures enables a detailed investigation of their self‐assembly behavior and supramolecular structures at the interface. The adsorption model proposed here is supported by the variation of the interfacial self‐assemblies on changing the solution concentration and substrate temperature.