What is it about?

A novel family of donor-acceptor (D-A) copolymers have been synthesized. These polymers contain oligothiophenes partially containing 3,4-ethylenedioxythiophene (EDOT) as D units. By controlling the chemical structures of oligothiophene units (length and EDOT ratio), the electronic properties of D-A copolymers could be well controlled.

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Why is it important?

There are many reports on the relationship between photovoltaic properties of D-A copolymers and their chemical structures, but there is little reports on the systematic control of the chemical structures of D units in the copolymers.

Perspectives

By changing the chain length and the ratio of EDOT unit of oligothiophenes in D units, the electronic properties and photovoltaic properties were systematically controlled. This results will give a useful information for the materials design of organic photovoltaics.

Dr Ichiro Imae
Hiroshima University

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This page is a summary of: Fine-tuning of electronic properties in donor–acceptor conjugated polymers based on oligothiophenes, Japanese Journal of Applied Physics, December 2017, Japan Society of Applied Physics,
DOI: 10.7567/jjap.57.03ej01.
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