Ultrafast Electron Solvation in Room Temperature Ionic Liquid Observed by Femtosecond Time-resolved Near-IR Spectroscopy

2019 ◽  
Vol 48 (5) ◽  
pp. 422-425 ◽  
Author(s):  
Manping Ye ◽  
Koichi Iwata
Keyword(s):  
Ionic Liquid ◽  
Ir Spectroscopy ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Time Resolved ◽  
Electron Solvation ◽  
Near Ir

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].

Interactions Between the Room-Temperature Ionic Liquid [C2C1Im][OTf] and Pd(111), Well-Ordered Al2O3, and Supported Pd Model Catalysts from IR Spectroscopy

2014 ◽  
Vol 118 (6) ◽  
pp. 3188-3193 ◽  
Author(s):  
Stefan Schernich ◽  
Dmytro Kostyshyn ◽  
Valentin Wagner ◽  
Nicola Taccardi ◽  
Mathias Laurin ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ir Spectroscopy ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Model Catalysts ◽  
Supported Pd

Role of H+ in Polypyrrole and Poly(3,4-ethylenedioxythiophene) Formation Using FeCl3·6H2O in the Room Temperature Ionic Liquid, C4mpyrTFSI

2012 ◽  
Vol 65 (11) ◽  
pp. 1513 ◽  
Author(s):  
Graeme A. Snook ◽  
Anand I. Bhatt ◽  
Muhammad E. Abdelhamid ◽  
Adam S. Best
Keyword(s):  
Cyclic Voltammetry ◽  
Ionic Liquid ◽  
Ir Spectroscopy ◽  
Chemical Reaction ◽  
Oxidation Reaction ◽  
Room Temperature ◽  
Trifluoromethanesulfonic Acid ◽  
Room Temperature Ionic Liquid ◽  
Iron Salt

The polymerisation reaction of pyrrole and 3,4-ethylenedioxythiophene using the chemical oxidant FeCl3·6H2O in the room temperature ionic liquid butyl-methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (C4mpyrTFSI) has been investigated using cyclic voltammetry, UV/vis and IR spectroscopy. The voltammetric data for the Fe2+/3+ reaction is complicated by the presence of H+ introduced upon dissolution of the iron salt by deprotonation of the coordinated waters. The voltammetric and chemical reaction studies show that H+ itself, introduced to solution as trifluoromethanesulfonic acid (HTFSI), can act as the chemical oxidant for the polymerisation reaction. Voltammetric data also implies that in this system the Fe2+/3+ redox couple may not actually be involved in the polymerisation reaction and that the H+ introduced upon dissolution of the FeCl3·6H2O may be the sole cause of the oxidation reaction.

The Solvent Effect on H2O2 Generation at Room Temperature Ionic Liquid|Water Interface

ChemPhysChem ◽  
2021 ◽  
Author(s):  
Marcin Wojciech Opallo ◽  
Justyna Kalisz ◽  
Wojciech Nogala ◽  
Wojciech Adamiak ◽  
Mateusz Gocyla ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Solvent Effect ◽  
Liquid Water ◽  
Room Temperature ◽  
Room Temperature Ionic Liquid ◽  
Water Interface ◽  
H2o2 Generation
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