Journal ArticleDOI
Excited state proton-transfer spectroscopy of 3-hydroxyflavone and quercetin
TLDR
In this article, the double minimum hydrogen-bonding potential of 3-hydroxyflavone and quercetin at room temperature in solution has been used to explain the luminescence of these molecules at 77 K in 2-methylbutane rigid matrix.About:
This article is published in Chemical Physics Letters.The article was published on 1979-12-15. It has received 561 citations till now. The article focuses on the topics: Excited state & Proton transport.read more
Citations
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Journal ArticleDOI
Advanced Organic Optoelectronic Materials: Harnessing Excited-State Intramolecular Proton Transfer (ESIPT) Process
Ji Eon Kwon,Soo Young Park +1 more
TL;DR: Recent studies on advanced ESIPT molecules and their optoelectronic applications are surveyed, particularly focusing on chemical sensors, fluorescence imaging, proton transfer lasers, and organic light-emitting diodes (OLEDs).
Journal ArticleDOI
Excited-state proton transfer reactions II. Intramolecular reactions
TL;DR: In this paper, the intrinsic processes and mechanisms of proton transfer in relation to the nature of the intramolecular hydrogen bond ring are reviewed. But the authors focus on the intrinsic process and not the mechanisms of transfer.
Journal ArticleDOI
Analytical separation and detection methods for flavonoids.
Eva de Rijke,Pieter Out,Wilfried M. A. Niessen,Freek Ariese,Cees Gooijer,Udo A. Th. Brinkman +5 more
TL;DR: Special attention will be devoted to the use of tandem-mass spectrometric (MS/MS) techniques for the characterization of several important sub-classes of flavonoids, and to the potential of combined diode-array UV (DAD UV), tandem-MS and nuclear magnetic resonance (NMR) detection for unambiguous identification.
Journal ArticleDOI
Excited-state proton coupled charge transfer modulated by molecular structure and media polarization
TL;DR: With knowledge of the mechanisms of these processes, desired rates and directions can be achieved, and thus the multiple emission spectral features can be harnessed.
Journal ArticleDOI
Imidazole-based excited-state intramolecular proton-transfer materials: synthesis and amplified spontaneous emission from a large single crystal.
Sanghyuk Park,Oh-Hoon Kwon,Sehoon Kim,Sangwoo Park,Moon Gun Choi,Myoungsik Cha,Soo Young Park,Du-Jeon Jang +7 more
TL;DR: It was deduced that the four phenyl groups substituted into the imidazole ring of HPI and HPI-Ac allowed the crystals free from concentration quenching of fluorescence by limiting the excessive tight-stacking responsible for intermolecular vibrational coupling and relevant nonradiative relaxation.
References
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Journal ArticleDOI
Phenomenology of solvent matrix spectroscopic effects
Barry Dellinger,Michael Kasha +1 more
TL;DR: In this paper, the Born-Oppenhelmer approach was applied to various molecular potentials in accordance with the Born Oppenhelmers approach developed in an earlier paper, including Morse vibrational, repulsive, double-bond torsional, double minimum, and pseudo-Jahn-Teller.
Journal ArticleDOI
Intermolecular perturbation of molecular potentials
Barry Dellinger,Michael Kasha +1 more
TL;DR: In this paper, the solvent cage concept of photochemistry is translated into spectroscopic language by an extension of the Born-Oppenheimer approximation, and the intermolecular perturbation term is taken as the barrier to viscous flow, added to the intramolecular potential.
Journal ArticleDOI
Relaxation processes in excited molecular systems
TL;DR: In addition to vibrational relaxation, an excited molecular system may undergo various relaxation processes that occur on the nanosecond time scale as discussed by the authors, and the effects of polarity, temperature, and viscosity of the medium are examined.
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Intramolecular excited-state proton transfer in 3-hydroxyflavone. Hydrogen-bonding solvent perturbations
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