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Controlled Diffusion of Photoswitchable Receptors by Binding Anti-electrostatic Hydrogen-Bonded Phosphate Oligomers
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-11-12 , DOI: 10.1021/jacs.0c09072 Thomas S C MacDonald 1 , Ben L Feringa 2 , William S Price 3 , Sander J Wezenberg 4 , Jonathon E Beves 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-11-12 , DOI: 10.1021/jacs.0c09072 Thomas S C MacDonald 1 , Ben L Feringa 2 , William S Price 3 , Sander J Wezenberg 4 , Jonathon E Beves 1
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Dihydrogen phosphate anions are found to spontaneously associate into anti-electrostatic oligomers via hydrogen bonding interactions at millimolar concentrations in DMSO. Diffusion NMR measurements supported formation of these oligomers, which can be bound by photoswitchable anion receptors to form large bridged assemblies of approximately three times the volume of the unbound receptor. Photoisomerization of the oligomer-bound receptor causes a decrease in diffusion coefficient of up to 16%, corresponding to a 70% increase in effective volume. This new approach to external control of diffusion opens prospects in controlling molecular transport using light.
中文翻译：
通过结合抗静电氢键磷酸酯低聚物控制光开关受体的扩散
研究发现磷酸二氢阴离子在 DMSO 中以毫摩尔浓度通过氢键相互作用自发地结合成抗静电低聚物。扩散核磁共振测量支持这些低聚物的形成，这些低聚物可以与光可切换阴离子受体结合，形成大的桥接组件，其体积约为未结合受体体积的三倍。寡聚物结合受体的光异构化导致扩散系数降低高达 16%，相当于有效体积增加 70%。这种外部控制扩散的新方法为利用光控制分子运输开辟了前景。
更新日期：2020-11-12
中文翻译：
通过结合抗静电氢键磷酸酯低聚物控制光开关受体的扩散
研究发现磷酸二氢阴离子在 DMSO 中以毫摩尔浓度通过氢键相互作用自发地结合成抗静电低聚物。扩散核磁共振测量支持这些低聚物的形成，这些低聚物可以与光可切换阴离子受体结合，形成大的桥接组件，其体积约为未结合受体体积的三倍。寡聚物结合受体的光异构化导致扩散系数降低高达 16%，相当于有效体积增加 70%。这种外部控制扩散的新方法为利用光控制分子运输开辟了前景。
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