Fluorescence Spectroscopy and Amplified Spontaneous Emission (ASE) of Phenylimidazoles: Predicted Vibronic Coupling Along the Excited-State Intramolecular Proton Transfer in 2-(2′-Hydroxyphenyl)imidazoles

2008 ◽  
Vol 112 (25) ◽  
pp. 5555-5565 ◽  
Author(s):  
Juan Carlos del Valle ◽  
R. M. Claramunt ◽  
J. Catalán
Keyword(s):  
Excited State ◽  
Fluorescence Spectroscopy ◽  
Proton Transfer ◽  
Spontaneous Emission ◽  
Amplified Spontaneous Emission ◽  
Intramolecular Proton Transfer ◽  
Vibronic Coupling

A naked eye colorimetric sensor for alcohol vapor discrimination and amplified spontaneous emission (ASE) from a highly fluorescent excited-state intramolecular proton transfer (ESIPT) molecule

2016 ◽  
Vol 4 (29) ◽  
pp. 6962-6966 ◽  
Author(s):  
Ling Chen ◽  
Shao-Yun Yin ◽  
Mei Pan ◽  
Kai Wu ◽  
Hai-Ping Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Energy Level ◽  
Proton Transfer ◽  
Spontaneous Emission ◽  
Photophysical Properties ◽  
Amplified Spontaneous Emission ◽  
Intramolecular Proton Transfer ◽  
Colorimetric Sensor ◽  
Alcohol Vapor ◽  
Naked Eye

The special four-energy level of ESIPT molecule H2hpi2cf results in both naked-eye colorimetric discrimination of common alcohols and ASE photophysical properties.

Excited-state intramolecular proton transfer and conformational relaxation in 4′-N,N-dimethylamino-3-hydroxyflavone doped in acetonitrile crystals

2016 ◽  
Vol 18 (41) ◽  
pp. 28564-28575 ◽  
Author(s):  
Kazuki Furukawa ◽  
Norifumi Yamamoto ◽  
Kazuyuki Hino ◽  
Hiroshi Sekiya
Keyword(s):  
Excited State ◽  
Steady State ◽  
Fluorescence Spectroscopy ◽  
Proton Transfer ◽  
Intramolecular Proton Transfer ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Conformational Relaxation ◽  
Excited State Dynamics

Excited-state dynamics of 4′-N,N-dimethylamino-3-hydroxyflavone doped in acetonitrile crystals has been investigated by using steady-state and time-resolved fluorescence spectroscopy.

Dynamics of excited-state intramolecular proton-transfer in 2-amino-3-(2′-benzazolyl)quinoline cations

2017 ◽  
Vol 16 (7) ◽  
pp. 1139-1145 ◽  
Author(s):  
Mikhail N. Khimich ◽  
Vladimir L. Ivanov ◽  
Mikhail Ya. Melnikov ◽  
Ivan V. Shelaev ◽  
Fedor E. Gostev ◽  
...  
Keyword(s):  
Excited State ◽  
Fluorescence Spectroscopy ◽  
Proton Transfer ◽  
Absorption Spectroscopy ◽  
Intramolecular Proton Transfer ◽  
Femtosecond Absorption Spectroscopy

Using femtosecond absorption spectroscopy and nanosecond fluorescence spectroscopy, the effective ESIPT time in the cations was determined, which increased with decreasing temperature.

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