Title
Thiophene-based chiral small bandgap π-conjugated polymers: synthesis and optical properties
Author
Aohan Wang, Kohsuke Kawabata, Hiromasa Goto
Year
2015
Journal
Designed Monomers and Polymers
Abstract
A series of thiophene-based chiral small bandgap π-conjugated polymers was successfully synthesized. Optical properties of the polymers were investigated by using UV–vis, photoluminescence (PL), circular dichroism (CD) spectroscopies, and specific rotation measurements. Especially, the isothianaphthene–thiophene based copolymers display 10–20 nm longer absorption maximum than those of thiophene–thiophene copolymers in the UV–vis. PL measurements demonstrate that the polymer exhibit light emission. CD spectroscopy measurements reveal helical π-stacking structure of the polymers.
Instrument
J-700
Keywords
Circular dichroism, Polymers, Stereochemistry,