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Epitaxial Growth of Thiophene/ p ‐Phenylene Co‐oligomers for Highly Polarized Light‐Emitting Crystals
Author(s) -
Yanagi H.,
Morikawa T.,
Hotta S.,
Yase K.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200103)13:5<313::aid-adma313>3.0.co;2-0
Subject(s) - materials science , phenylene , thiophene , epitaxy , conjugated system , crystallization , photoluminescence , optoelectronics , molecule , thin film , photochemistry , polymer , chemical engineering , nanotechnology , organic chemistry , chemistry , composite material , layer (electronics) , engineering
Polarized photoluminescence in orientated thin films of π‐conjugated oligomers is demonstrated here. Vapor‐deposited thiophene/ p ‐phenylene co‐oligomers are described and it is shown that these molecules form epitaxial needle‐like crystals (see Figure). Molecular modification of the co‐oligomers enables the emission color to be tuned and the epitaxial crystallization to be controlled, thus leading to polarized emissions of light.