Ultrafast FRET in a Room Temperature Ionic Liquid Microemulsion: A Femtosecond Excitation Wavelength Dependence Study†

2009 ◽  
Vol 113 (16) ◽  
pp. 3737-3743 ◽  
Author(s):  
Aniruddha Adhikari ◽  
Dibyendu Kumar Das ◽  
Dibyendu Kumar Sasmal ◽  
Kankan Bhattacharyya
Keyword(s):  
Ionic Liquid ◽  
Room Temperature ◽  
Wavelength Dependence ◽  
Room Temperature Ionic Liquid ◽  
Excitation Wavelength ◽  
Excitation Wavelength Dependence

Deuterium Isotope Effect on Femtosecond Solvation Dynamics in an Ionic Liquid Microemulsion: An Excitation Wavelength Dependence Study

2010 ◽  
Vol 114 (13) ◽  
pp. 4565-4571 ◽  
Author(s):  
Dibyendu Kumar Sasmal ◽  
Supratik Sen Mojumdar ◽  
Aniruddha Adhikari ◽  
Kankan Bhattacharyya
Keyword(s):  
Ionic Liquid ◽  
Isotope Effect ◽  
Wavelength Dependence ◽  
Excitation Wavelength ◽  
Solvation Dynamics ◽  
Deuterium Isotope Effect ◽  
Excitation Wavelength Dependence

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].

Solvation Dynamics in Ionic Liquid Swollen P123 Triblock Copolymer Micelle: A Femtosecond Excitation Wavelength Dependence Study

2008 ◽  
Vol 112 (20) ◽  
pp. 6350-6357 ◽  
Author(s):  
Aniruddha Adhikari ◽  
Shantanu Dey ◽  
Dibyendu Kumar Das ◽  
Ujjwal Mandal ◽  
Subhadip Ghosh ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Triblock Copolymer ◽  
Wavelength Dependence ◽  
Excitation Wavelength ◽  
Solvation Dynamics ◽  
Copolymer Micelle ◽  
Excitation Wavelength Dependence

Femtosecond Solvation Dynamics in a Neat Ionic Liquid and Ionic Liquid Microemulsion:  Excitation Wavelength Dependence

2007 ◽  
Vol 111 (44) ◽  
pp. 12809-12816 ◽  
Author(s):  
Aniruddha Adhikari ◽  
Kalyanasis Sahu ◽  
Shantanu Dey ◽  
Subhadip Ghosh ◽  
Ujjwal Mandal ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Wavelength Dependence ◽  
Excitation Wavelength ◽  
Solvation Dynamics ◽  
Excitation Wavelength Dependence
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