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Probing Laser‐Induced Heterogeneous Microenvironment Changes in Room‐Temperature Ionic Liquids
Author(s) -
Ma Renjun,
Wang Xian,
Jie Jialong,
Yan Linyin,
Kuang Zhuoran,
Guo Qianjin,
Li Boxuan,
Xia Andong
Publication year - 2017
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201700772
Subject(s) - chemical physics , ionic liquid , ionic bonding , molecule , redistribution (election) , porphyrin , ion , chemistry , solvent , photochemistry , polar , nanotechnology , materials science , catalysis , organic chemistry , physics , politics , political science , law , astronomy
Modulating the heterogeneous microenvironment in room‐temperature ionic liquids (RTILs) by external stimuli is an important approach for understanding and designing external field‐induced chemical reactions in natural and applied systems. Here, we report for the first time the redistribution of oxygen molecules related to microstructure changes in RTILs induced by an external laser field, which is probed simultaneously by the triplet‐state dynamics of porphyrin. A remarkably long‐lived triplet state of porphyrin is observed with changes of microstructures after irradiation, suggesting that charge‐shifted O 2 molecules are induced by the external field and/or rearranged intrinsic ions move from nonpolar domains into the polar domains of RTILs through electrostatic interactions. The results suggest that heterogeneous systems like ionic liquids in the presence of external stimuli can be designed for reaction systems associated with not only O 2 but also for CO 2 , CS 2 , etc. and many other similar solvent molecules for many promising applications.