Journal ArticleDOI
Determination of the excited state dipole moment of fluorenone using the method of solvatochromism
TLDR
In this paper, the absorption spectra and steady state fluorescence spectra of fluorenone have been obtained at room temperature for various concentrations in a series of non polar and polar solvents.About:
This article is published in Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy.The article was published on 1995-12-01. It has received 12 citations till now. The article focuses on the topics: Solvatochromism & Fluorenone.read more
Citations
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Journal ArticleDOI
Monodisperse Oligofluorenes with Keto Defect as Models to Investigate the Origin of Green Emission From Polyfluorenes: Synthesis, Self-Assembly, and Photophysical Properties
TL;DR: Studies of the photophysical properties of OFnK in solution and thin film by steady-state and time-resolved fluorescence spectroscopic measurements suggest efficient funneling of excitation energy from the photoexcited fluorene segments to the low-energy fluorenone sites by both intra- and intermolecular hopping events whereby they give rise to green emission.
Journal ArticleDOI
Determination of the quadratic hyperpolarizability of trans-4-[4-(dimethylamino)styryl]pyridine and 5-dimethylamino-1,10-phenanthroline from solvatochromism of absorption and fluorescence spectra: a comparison with the electric-field-induced second-harmonic generation technique.
TL;DR: The versatility of the method described in this work in the presence of more than one electronic transition contributing to the non-linear optical response is demonstrated.
Journal ArticleDOI
Dipole moments studies of fluorenone and 4-hydroxyfluorenone.
Marek Józefowicz,Janina R. Heldt +1 more
TL;DR: It was determined that dipole moments of excited state were higher than those of the ground state for both molecules.
Journal ArticleDOI
Modular electron donor group tuning of frontier energy levels in diarylaminofluorenone push-pull molecules.
Paul J. Homnick,Paul M. Lahti +1 more
TL;DR: Electrochemical and spectral data combined in a modular electronic analysis model show how the donor HOMO and acceptor LUMO act as major determinants of the frontier molecular orbital energy levels.
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Engineering Frontier Energy Levels in Donor–Acceptor Fluoren-9-ylidene Malononitriles versus Fluorenones
TL;DR: In this article, a modular donor-acceptor interaction model was proposed to explain the spectral properties and optical transition energy trends of fluoren-9-ylidene malononitrile acceptor units.
References
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Photon-induced molecular charge separation studied by nanosecond time-resolved microwave conductivity
TL;DR: In this paper, the application of the time-resolved microwave conductivity (TRMC) technique to the quantitative measurement of charge separation in flash-photolysed molecular systems is desecribed.
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Excited-state dipole moments from absorption/fluorescence solvatochromic ratios
TL;DR: In this paper, the permanent dipole moments of excited molecules can be obtained from the ratio of the solvent shifts of absorption and fluorescence spectra, which eliminates the uncertain solute cavity radius parameter, as well as the solvent polarity function.
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Excited state dipole moments from an efficient analysis of solvatochromic stokes shift data
TL;DR: In this paper, it was shown that the solvatocbromism of Stokes shifts has superior correlation with the solvent polarity function E T N, and the theoretical basis for this was analyzed.
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Photophysical processes in fluorenone
TL;DR: In this paper, the flash transient spectrum is given over a wide spectral range in acetonitrile and hydrocarbon solvents, and is assigned to the triplet on the basis of both its decay kinetics and accompanying delayed emission.