微粘度
离子液体
化学
离子键合
化学物理
生物物理学
有机化学
生物化学
离子
生物
催化作用
膜
作者
Ryan Clark,Abdul Hadi Nawawi,Ana Dobre,David Pugh,Qingshan Liu,Aleksandar P. Ivanov,Andrew J. P. White,Joshua B. Edel,Marina K. Kuimova,Alastair J. S. McIntosh,Tom Welton
出处
期刊:Chemical Science
[The Royal Society of Chemistry]
日期:2020-01-01
卷期号:11 (24): 6121-6133
被引量:23
摘要
The behaviour of two molecular rotors, one charged - 3,3'-diethylthiacarbocyanine iodide (Cy3) and one neutral - 8-[4-decyloxyphenyl]-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY-C10), have been studied in various ionic liquids. The fluorescent decay lifetime has been used to elucidate the structure of the immediate region around the rotor. The neutral BODIPY-C10 was found to prefer the non-polar alkyl chain environment, leading to two trends in the lifetime of the dye: one when it was fully partitioned into the non-polar domain, and one when it also sampled polar moieties. The positively charged Cy3 dye showed a complex relationship between the bulk viscosity of the ionic liquid and lifetime of the molecular rotor. This was attributed to a combination of polarity related spectral changes, changes in anion cages around the dye, and temperature dependent fluorescent lifetimes alongside the dependence of the rotor upon the viscosity.
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