Premium
Parallel Synthesis of Photoluminescent π‐Conjugated Polymers by Polymer Reactions of an Organotitanium Polymer with a Titanacyclopentadiene Unit
Author(s) -
Matsumura Yoshimasa,
Fukuda Katsura,
Inagi Shinsuke,
Tomita Ikuyoshi
Publication year - 2015
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.201400667
Subject(s) - polymer , conjugated system , materials science , polymer chemistry , photoluminescence , polymer science , polymer architecture , nanotechnology , composite material , optoelectronics
A regioregular organometallic polymer with titanacyclopentadiene unit, obtained by the reaction of a 2,7‐diethynylfluorene derivative and a low‐valent titanium complex, is subjected to the reaction with three kinds of electrophiles (i.e., sulfur monochloride, hydrochloric acid, and dichlorophenylphosphine) to give π−conjugated polymers possessing both fluorene and building blocks originated from the transformation of the titanacycles in the main chain. For example, a phosphole‐containing polymer whose number‐average molecular weight is estimated as 5000 is obtained in 50% yield. The obtained thiophene, butadiene, and phosphole‐containing polymers exhibit efficient photoluminescence (PL) with emission colors of blue, green, and yellow, respectively. For example, the phosphole‐containing polymer exhibits yellow PL with an emission maximum ( E max ) of 533 nm and a quantum yield ( Φ ) of 0.37.