Mechanochemical unzipping of insulating polyladderene to semiconducting polyacetylene

Chen, Zhixing; Mercer, Jaron A. M.; Zhu, Xiaolei; Romaniuk, Joseph A. H.; Pfattner, Raphael; Cegelski, Lynette; Martinez, Todd J.; Burns, Noah Z.; Xia, Yan

doi:10.1126/science.aan2797

Mechanochemical unzipping of insulating polyladderene to semiconducting polyacetylene

Journal Article · Fri Aug 04 04:00:00 EDT 2017 · Science

DOI:https://doi.org/10.1126/science.aan2797· OSTI ID:1390309

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Stanford Univ., Stanford, CA (United States)
Stanford Univ., Stanford, CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States)

Biological systems sense and respond to mechanical stimuli in a complex manner. In an effort to develop synthetic materials that transduce mechanical force into multifold changes in their intrinsic properties, we report on a mechanochemically responsive nonconjugated polymer that converts to a conjugated polymer via an extensive rearrangement of the macromolecular structure in response to force. Our design is based on the facile mechanochemical unzipping of polyladderene, a polymer inspired by a lipid natural product structure and prepared via direct metathesis polymerization. The resultant polyacetylene block copolymers exhibit long conjugation length and uniform trans-configuration and self-assemble into semiconducting nanowires. In conclusion, calculations support a tandem unzipping mechanism of the ladderene units.

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE; US Army Research Office (ARO); National Science Foundation (NSF); US Department of the Navy, Office of Naval Research (ONR)

DOE Contract Number:: AC02-76SF00515

OSTI ID:: 1390309

Journal Information:: Science, Journal Name: Science Journal Issue: 6350 Vol. 357; ISSN 0036-8075

Publisher:: AAAS

Country of Publication:: United States

Language:: English

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