Influence of side chain isomerism on the rigidity of poly(3-alkylthiophenes) in solutions revealed by neutron scattering

Literature Information

Publication Date 2019-02-25
DOI 10.1039/C8CP07520D
Impact Factor 3.676
Authors

William D. Hong, Christopher N. Lam, Yangyang Wang, Youjun He, Luis E. Sánchez-Díaz, Changwoo Do


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Abstract

Using small-angle neutron scattering, we conducted a detailed conformational study of poly(3-alkylthiophene) solutions in deuterated dichlorobenzene. The focus was placed on addressing the influence of the spatial arrangement of side chain constituents on backbone conformation. We demonstrate that by introducing a branch point in the side chain, side chain steric interactions may promote torsional motion between backbone units, resulting in greater chain flexibility. Our findings highlight the key role of topological isomerism in determining the chain rigidity and throw new light on the debate about the effective approaches for optimizing the electronic properties of conducting polymers via side chain engineering.

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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