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Cover Picture: Synthesis and Nanostructures of Cyclic Triphenylene Trimers Having Long Alkyl and Alkoxy Side‐Chains (Chem. Asian J. 11/2011)
Author(s) -
Hanai Yoshimi,
Rahman M. Jalilur,
Yamakawa Jun,
Takase Masayoshi,
Nishinaga Tohru,
Hasegawa Masashi,
Kamada Kenji,
Iyoda Masahiko
Publication year - 2011
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201190045
Subject(s) - crystallization , alkyl , nucleation , materials science , molecule , triphenylene , supramolecular chemistry , side chain , crystallography , alkoxy group , polymer , polymer chemistry , chemistry , organic chemistry , composite material
A carbocyclic conjugated molecule with a large inner cavity and alkyl side chains self‐associates in organic solvents to produce either oligomers in solution or fibrous material in the solid state. Self‐association of the molecule in solution is enthalpically and entropically driven. As described in their Communication on 2940 ff., M. Iyoda et al. report that the molecule forms a 1:3 CT complex with 2,4,7‐trinitrofluorenone with a microball structure, where a nanosized branched structure forms first at the growth points, followed by production of the microball with a dendritic interior. The size‐selective construction of spherical supramolecular dendrimers by the formation of CT complexes is of fundamental importance for designing and constructing organic materials for metal inclusion, organic devices, and biological use.