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Lucas JM, Labastide JA, Wei L, et al. Carpenter's Rule Folding in Rigid-Flexible Block Copolymers with Conjugation-Interrupting, Flexible Tethers Between Oligophenylenevinylenes. J Phys Chem A. 2015;119(29):8010-20doi: 10.1021/acs.jpca.5b02295.
Lucas, J. M., Labastide, J. A., Wei, L., Tinkham, J. S., Barnes, M. D., & Lahti, P. M. (2015). Carpenter's Rule Folding in Rigid-Flexible Block Copolymers with Conjugation-Interrupting, Flexible Tethers Between Oligophenylenevinylenes. The journal of physical chemistry. A, 119(29), 8010-20. https://doi.org/10.1021/acs.jpca.5b02295
Lucas, Jeffrey M, et al. "Carpenter's Rule Folding in Rigid-Flexible Block Copolymers with Conjugation-Interrupting, Flexible Tethers Between Oligophenylenevinylenes." The journal of physical chemistry. A vol. 119,29 (2015): 8010-20. doi: https://doi.org/10.1021/acs.jpca.5b02295
Lucas JM, Labastide JA, Wei L, Tinkham JS, Barnes MD, Lahti PM. Carpenter's Rule Folding in Rigid-Flexible Block Copolymers with Conjugation-Interrupting, Flexible Tethers Between Oligophenylenevinylenes. J Phys Chem A. 2015 Jul 23;119(29):8010-20. doi: 10.1021/acs.jpca.5b02295. Epub 2015 Jun 30. PMID: 26125328.
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J Phys Chem A. 2015 Jul 23;119(29):8010-20. doi: 10.1021/acs.jpca.5b02295. Epub 2015 Jun 30.

Carpenter's Rule Folding in Rigid-Flexible Block Copolymers with Conjugation-Interrupting, Flexible Tethers Between Oligophenylenevinylenes.

The journal of physical chemistry. A

Jeffrey M Lucas, Joelle A Labastide, Lang Wei, Jonathan S Tinkham, Michael D Barnes, Paul M Lahti

Affiliations

  1. Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003, United States.

PMID: 26125328 DOI: 10.1021/acs.jpca.5b02295

Abstract

Rigid-flexible segmented block copolymers were synthesized and characterized as 4.5-oligophenylenevinylene chromophores tethered by flexible, conjugation-interrupting 1,2-ethanedioxy or 1,4-butanedioxy units. The flexible tethers allow the possibility of collapsed order chromophore assemblies within individual polymers by chain folding at specific sites much like an old fashioned, folding carpenter's rule. Our results indicate that using a short, flexible tether in a rigid-flexible segmented copolymer can result in collapsed rodlike structures as signaled by strongly quenched photoluminescence, even after thermal annealing. Such ability to "program" folding and tertiary structure in conjugated copolymers is important for solid-state organic light emitting materials and understanding of organic chromophore self-assembly.

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