A novel c-D-nc-B-cf-A (or DBpfA, p=0,1,2,4,6) type of block copolymer has been developed and studied for potential light harvesting and optoelectronic applications, where c-D is a conjugated electron-donating block, nc-B is a non-conjugated bridge unit, and cf-A is a conjugated and fluorinated electron-accepting block. The nc-Bridge chains contain different number of methylene units. Photoluminescence and optoelectronic conversions of such series of block copolymers were evaluated for different bridge lengths. The DB<b><sub>1</sub></b>fA block copolymer (one methylene unit is present in the bridge) exhibited better optoelectronic performance than both longer bridges or DfA block copolymer (without bridge). Mechanisms of these observations will be elucidated.

Optoelectronic properties versus bridge interfaces of a series DBpfA type block copolymers

2019 Spring National Meeting

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