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Issue 5, 2015
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Diselenogermole as a novel donor monomer for low band gap polymers

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Abstract

We report the synthesis of a new diseleno[3,2-b:2′,3′-d]germole (DSG) monomer containing branched 2-ethylhexyl sidechains on the bridging germanium group. The utility of this new electron rich monomer is explored by co-polymerisation of a distannylated DSG monomer with N-octylthienopyrrolodione to afford a soluble low band gap polymer. The DSG containing polymer shows a broader and more red-shifted absorption spectrum compared its thiophene analogue. Polymer solar cells are fabricated from blends with PC71BM exhibiting initial power conversion efficiencies of 5.2% in inverted bulk heterojunction solar cells.

Graphical abstract: Diselenogermole as a novel donor monomer for low band gap polymers

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Publication details

The article was received on 24 Oct 2014, accepted on 25 Nov 2014 and first published on 08 Dec 2014


Article type: Paper
DOI: 10.1039/C4TA05703A
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J. Mater. Chem. A, 2015,3, 1986-1994
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    Diselenogermole as a novel donor monomer for low band gap polymers

    Z. Fei, R. S. Ashraf, Y. Han, S. Wang, C. P. Yau, P. S. Tuladhar, T. D. Anthopoulos, M. L. Chabinyc and M. Heeney, J. Mater. Chem. A, 2015, 3, 1986
    DOI: 10.1039/C4TA05703A

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