Dynamics of side chains in poly(quinoxaline-2,3-diyl)s studied via quasielastic neutron scattering-Reference-Cited by-同舟云学术

Dynamics of side chains in poly(quinoxaline-2,3-diyl)s studied via quasielastic neutron scattering

Published:2024-08-02 Issue:5 Volume:161 Page:
ISSN:0021-9606
Container-title:The Journal of Chemical Physics
language:en
Short-container-title:

Author:

Inoue R.¹^ORCID,Nagata Y.²^ORCID,Tominaga T.³^ORCID,Sato S.⁴^ORCID,Kawakita Y.⁵,Yamawaki T.²^ORCID,Morishima K.¹^ORCID,Suginome M.²,Sugiyama M.¹^ORCID

Affiliation:

1. Institute for Integrated Radiation and Nuclear Science, Kyoto University 1 , Kumatori, Sennan-gun, Osaka 590-0494, Japan

2. Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University 2 , Kyoto 606-8501, Japan

3. Neutron Science and Technology Center, Comprehensive Research Organization for Science and Society (CROSS) 3 , Tokai, Ibaraki 319-1106, Japan

4. Department of Applied Chemistry, The University of Tokyo 4 , Tokyo 113-8656, Japan

5. Materials and Life Science Division, J-PARC Center 5 , Tokai, Ibaraki 319-1195, Japan

Abstract

The side chain dynamics of poly(quinoxaline-2,3-diyl)s (PQXs) are expected to influence their conformation. To investigate these dynamics experimentally, quasielastic neutron scattering (QENS) was performed for PQXs in deuterated tetrahydrofuran (THF-d8) and deuterated 1,1,2-trichloroethane/THF (1,1,2-TCE-d3/THF-d8), in which they formed right-handed and left-handed helical structures, respectively. The mean-square displacement of the PQX side chains in 1,1,2-TCE-d3/THF-d8 was lower than that in THF-d8. Furthermore, QENS complementary studies and molecular dynamics simulations unraveled a coupling between the main-chain and side chain dynamics of PQXs, suggesting the possibility of controlling the main-chain helical chirality through the dynamics of chiral side chains. These insights present a novel strategy for the design of synthetic helical macromolecules with precise chirality control.

Funder

MEXT/JSPS KAKENHI

JST-CREST

JST-ERATO

AMED

Publisher

AIP Publishing

Link

https://pubs.aip.org/aip/jcp/article-pdf/doi/10.1063/5.0215603/20091485/054905_1_5.0215603.pdf

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