Fluorescent probe dependence of the solvation dynamics in ionic liquid BmimBF4 and propylene carbonate mixtures: a time-resolved fluorescence and quantum chemistry study

2019 ◽  
Vol 282 ◽  
pp. 39-50 ◽  
Author(s):  
Yevheniia Smortsova ◽  
François-Alexandre Miannay ◽  
Volodymyr Koverga ◽  
Julien Dubois ◽  
Oleg Kalugin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Quantum Chemistry ◽  
Fluorescent Probe ◽  
Propylene Carbonate ◽  
Solvation Dynamics ◽  
Time Resolved Fluorescence ◽  
Time Resolved

scholarly journals The effect of structural heterogeneity upon the microviscosity of ionic liquids

2020 ◽  
Vol 11 (24) ◽  
pp. 6121-6133 ◽  
Author(s):  
Ryan Clark ◽  
Mohd A. Nawawi ◽  
Ana Dobre ◽  
David Pugh ◽  
Qingshan Liu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Bulk Viscosity ◽  
Structural Heterogeneity ◽  
Molecular Rotors ◽  
Complex Relationship ◽  
Molecular Rotor ◽  
Time Resolved Fluorescence ◽  
Time Resolved

The behaviour of two molecular rotors have been studied in various ionic liquids. Time resolved fluorescence shows a complex relationship between the bulk viscosity of the ionic liquid and microstructure of solvent around each molecular rotor.

Solvation dynamics and rotation of coumarin 153 in a new ionic liquid/molecular solvent mixture model: [BMIM][TFSI]/propylene carbonate

2017 ◽  
Vol 226 ◽  
pp. 48-55 ◽  
Author(s):  
Yevheniia Smortsova ◽  
François-Alexandre Miannay ◽  
Hanna Oher ◽  
Bogdan Marekha ◽  
Julien Dubois ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Mixture Model ◽  
Propylene Carbonate ◽  
Solvent Mixture ◽  
Solvation Dynamics ◽  
Coumarin 153

NONLINEAR LASER SPECTROSCOPY OF NONLINEAR SOLVATION

1996 ◽  
Vol 05 (04) ◽  
pp. 789-807 ◽  
Author(s):  
B.D. FAINBERG ◽  
B. ZOLOTOV ◽  
D. HUPPERT
Keyword(s):  
Time Evolution ◽  
Laser Spectroscopy ◽  
Electronic Transition ◽  
Linear Response ◽  
Nonlinear Optical ◽  
Optical Spectra ◽  
Solvation Dynamics ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Nonlinear Laser Spectroscopy

In this study we show that the transient four-photon spectroscopy with pulses longer than the electronic transition dephasing can be used for nonlinear solvation study, i.e., when the linear response for the solvation dynamics breaks down. We have obtained new formulae describing the time evolution of the moments of the nonlinear optical spectra and, in particular, the time resolved fluorescence in the case of nonlinear solvation.

LDS-750 as a probe of solvation dynamics: a femtosecond time-resolved fluorescence study in liquid aniline

1999 ◽  
Vol 303 (1-2) ◽  
pp. 209-217 ◽  
Author(s):  
Neil A. Smith ◽  
Stephen R. Meech ◽  
Igor V. Rubtsov ◽  
Keitaro Yoshihara
Keyword(s):  
Solvation Dynamics ◽  
Time Resolved Fluorescence ◽  
Fluorescence Study ◽  
Time Resolved

A fluorescence study of the solute–solvent interactions of aminochalcones in a room-temperature ionic liquid

2013 ◽  
Vol 85 (7) ◽  
pp. 1451-1463 ◽  
Author(s):  
Kotni Santhosh ◽  
G. Krishnamurthy Grandhi ◽  
Snigdha Ghosh ◽  
Anunay Samanta
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Solvent Polarity ◽  
Fluorescence Decay ◽  
Room Temperature Ionic Liquid ◽  
Excitation Wavelength ◽  
Solvation Dynamics ◽  
Time Resolved ◽  
Solvent Interactions ◽  
The One

Unlike most other electron donor–acceptor (EDA) molecules, aminochalcones exhibit unusual solvent polarity-dependent fluorescence behavior. The photophysical behavior of two aminochalcones, namely, 4-aminochalcone (AC) and 4-dimethylaminochalcone (DMAC), has been studied in a viscous room-temperature ionic liquid (IL), 1-butyl-3-methylimidazolium hexafluorophosphate, [bmim][PF6], by steady-state and time-resolved fluorescence techniques. The observation of a single emission band in viscous IL, which is similar to the one observed in less viscous polar conventional solvents, suggests no twisting is necessary for the formation of the charge-transfer state from which the emission of aminochalcones originates. The fluorescence decay profiles, solvation dynamics, and excitation-wavelength-dependent emission behavior of AC are found to be quite different from those of DMAC in the IL. The observed difference is attributed to specific H-bonding interaction between AC and [bmim][PF6].

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