Premium
“Sandglass”‐Shaped Self‐Assembly of Coil–rod–coil Triblock Copolymer Containing Rigid Aniline‐Pentamer
Author(s) -
Huang Lihong,
Hu Jun,
Lang Le,
Zhuang Xiuli,
Chen Xuesi,
Wei Yen,
Jing Xiabin
Publication year - 2008
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200800115
Subject(s) - pentamer , copolymer , materials science , electromagnetic coil , polymer chemistry , aniline , polymer science , polymer , composite material , chemistry , nuclear magnetic resonance , organic chemistry , physics , quantum mechanics
The amphiphilic PEG 1 500 ‐ b ‐EM AP‐ b ‐PEG 1 500 (EM PAP) triblock copolymer of poly(ethylene glycol) (PEG) and emeraldine aniline‐pentamer (EM AP) in its concentrated solution can self‐assemble into a special shape like “sandglass”, as observed by transmission electron microscopy (TEM), field emission scanning electron microscopy (ESEM) and atomic force microscopy (AFM). This “sandglass”‐shaped assembly is composed of several “rods” aggregated in the middle, with every “rod” being about 8 µm in length and 300 nm in diameter. We conclude that the special “sandglass”‐shaped assembly may come into being because of the inducement effect of the crystallization of EM AP segments, by studying electron diffraction (ED) results and wide‐angle X‐ray diffusion (WAXD) characterization of the EM PAP triblock copolymer.