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Twisted but Conjugated: Building Blocks for Low Bandgap Polymers
Authors:Dr. Chien‐Yang Chiu  Dr. Hengbin Wang  Dr. Fulvio G. Brunetti  Prof. Fred Wudl  Prof. Craig J. Hawker
Affiliation:1. Materials Research Laboratory, University of California, Santa Barbara, CA 93106 (USA);2. Mitsubishi Chemical USA, Inc., Chesapeake, VA 23320 (USA)
Abstract:Here we report a novel twisted monomer based on a distorted C?C double bond for low bandgap conjugated copolymers. This new building block provides several unique characteristics when compared to classical planar systems such as high solubility, electron accepting ability, and isomeric tunability. The resulting copolymers exhibit broad absorption spanning both visible and near‐infrared regions leading to promising solar cell performance.
Keywords:building blocks  electron acceptors  low bandgap  polymers  solar cells
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