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Learning how planarization can affect dichroic patterns in polyfluorenes

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Title: Learning how planarization can affect dichroic patterns in polyfluorenes
Authors: Adriana, Pietropaolo Browse this author
Tamaki, Nakano Browse this author →KAKEN DB
Keywords: chiral polymers
chiral switch
circular dichroism spectra
molecular dynamics
polymer simulations
Issue Date: May-2020
Publisher: John Wiley & Sons
Journal Title: Chirality
Volume: 32
Issue: 5
Start Page: 661
End Page: 666
Publisher DOI: 10.1002/chir.23219
Abstract: The circular dichroism spectra of a single chain of polyfluorene was predicted for a p-twisted helix conformation and local planarized polymer sections in the presence and in the absence of thermal vibrations. Under thermal vibrations at 300 K, the planarized section of polyfluorene affords a red-shifted positive dichroic band between 446 and 456 nm, preserving a degree of chirality. The S1 <- S0 excitation energy decreases from 3.29 eV, for the p-twisted helix to 2.77 or 2.71 eV, for planarized sections with one or two coplanar twists, respectively. Thermal vibrations and intramolecular rotations eventually affect the circular dichroism spectrum patterns, where planarized bent conformers induce a positive band towards 450 nm.
Rights: This is the peer reviewed version of the following article: Pietropaolo, A, Nakano, T. Learning how planarization can affect dichroic patterns in polyfluorenes. Chirality. 2020; 32: 661– 666, which has been published in final form at . This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Type: article (author version)
Appears in Collections:触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 中野 環

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