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Wang, Huan
첨단연성물질 연구단
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Boosted molecular mobility during common chemical reactions

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Title
Boosted molecular mobility during common chemical reactions
Author(s)
Huan Wang; Myeonggon Park; Ruoyu Dong; Junyoung Kim; Yoon-Kyoung Cho; Tsvi Tlusty; Steve Granick
Subject
CLICK CHEMISTRY, ; RING-CLOSURE, ; DIFFUSION, ; AZIDE, ; CYCLOADDITIONS, ; ACTIVATION, ; ENTHALPY, ; ENTROPY, ; BIOLOGY, ; DFT
Publication Date
2020-07
Journal
SCIENCE, v.369, no.6503, pp.537 - 541
Publisher
AMER ASSOC ADVANCEMENT SCIENCE
Abstract
© 2020 American Association for the Advancement of Science. Mobility of reactants and nearby solvent is more rapid than Brownian diffusion during several common chemical reactions when the energy release rate exceeds a threshold. Screening a family of 15 organic chemical reactions, we demonstrate the largest boost for catalyzed bimolecular reactions, click chemistry, ring-opening metathesis polymerization, and Sonogashira coupling. Boosted diffusion is also observed but to lesser extent for the uncatalyzed Diels-Alder reaction, but not for substitution reactions S(N)1 and S(N)2 within instrumental resolution. Diffusion coefficient increases as measured by pulsed-field gradient nuclear magnetic resonance, whereas in microfluidics experiments, molecules in reaction gradients migrate "uphill" in the direction of lesser diffusivity. This microscopic consumption of energy by chemical reactions transduced into mechanical motion presents a form of active matter
URI
https://pr.ibs.re.kr/handle/8788114/7749
DOI
10.1126/science.aba8425
ISSN
0036-8075
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > 1. Journal Papers (저널논문)
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