Journal ArticleDOI
Competing adiabatic photoreaction channels in stilbene derivatives
Wolfgang Rettig,Wilfried Majenz +1 more
TLDR
In this article, a stepwise relaxation model was proposed for a TICT state (twisted single-bond conformation) as the main fluorescent species and temperature-activated non-radiative decay via a photochemical funnel with twisted double-bund conformation.About:
This article is published in Chemical Physics Letters.The article was published on 1989-01-27. It has received 154 citations till now. The article focuses on the topics: Solvent effects.read more
Citations
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Journal ArticleDOI
Structural Changes Accompanying Intramolecular Electron Transfer: Focus on Twisted Intramolecular Charge-Transfer States and Structures
TL;DR: The Rehybridization of the Acceptor (RICT) and Planarization ofThe Molecule (PICT) III is presented, with a comparison of the effects on yield and radiationless deactivation processes.
Journal ArticleDOI
Ultrafast Elementary Photochemical Processes of Organic Molecules in Liquid Solution
TL;DR: Reactions discussed include intra- and intermolecular electron- and proton-transfer processes, as well as photochromic reactions occurring with and without bond breaking or bond formation, namely ring-opening reactions and cis-trans isomerizations, respectively.
Journal ArticleDOI
Energy Transfer in a Nanoscale Multichromophoric System: Fluorescent Dye-Doped Conjugated Polymer Nanoparticles
TL;DR: Significant features of these nanoparticles include the high brightness, highly red-shifted emission spectrum, and excellent photostability, which are promising for biological labeling and sensing applications.
Book ChapterDOI
Photoinduced charge separation via twisted intramolecular charge transfer states
TL;DR: The most recent developments in the understanding of these states both from the theoretical and the phenomenological viewpoint are reviewed in this paper, with emphasis given to the effect of broadened angular distributions and to the possibility of multiple TICT channels.
Journal ArticleDOI
Substituent-dependent photoinduced intramolecular charge transfer in N-aryl-substituted trans-4-aminostilbenes.
TL;DR: The photochemical behavior of trans-4-(N-arylamino)stilbene (1, aryl = 4-substituted phenyl) in solvents more polar than THF is attributed to the formation of a twisted intramolecular charge transfer (TICT) state for those with a methoxy (1OM), methoxycarbonyl (1CO), or cyano (1CN) substituent but not for those having a methyl (1Me), hydrogen (1H), chloro (1Cl), or
References
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Journal ArticleDOI
Use of the CNDO Method in Spectroscopy. I. Benzene, Pyridine, and the Diazines
Janet E. Del Bene,H. H. Jaffé +1 more
TL;DR: In this article, the CNDO method was modified by substitution of semi-empirical Coulomb integrals similar to those used in the Pariser-Parr-Pople method, and by introducing a new empirical parameter κ to differentiate resonance integrals between σ orbitals from those between π orbitals.
Journal ArticleDOI
Charge Separation in Excited States of Decoupled Systems—TICT Compounds and Implications Regarding the Development of New Laser Dyes and the Primary Process of Vision and Photosynthesis
TL;DR: The dual fluorescence of certain aromatic systems has greatly advanced in recent years, and the accompanying large charge separation has been linked to a twisted (or small overlap) arrangement of the chromophores as mentioned in this paper.
Journal ArticleDOI
Dipolmoment und Elektronenstruktur von angeregten Molekülen
TL;DR: In this paper, a spektroskopische Methode was angegeben, with der das Dipolmoment des ersten angeregten Elektronenzustandes von fluoreszenzfähigen Molekülen in polaren Lösungsmitteln bestimmt werden kann.
Journal ArticleDOI
Bicycle-pedal model for the first step in the vision process.
TL;DR: It is proposed that the prelumirhodopsin intermediate contains a strained all-trans retinal molecule produced directly and rapidly from the 11-cis, 12-s-trans conformation in r Rhodopsin by a bicycle-pedal isomerisation.
Journal ArticleDOI
Use of the CNDO Method in Spectroscopy. II. Five‐Membered Rings
Janet E. Del Bene,H. H. Jaffé +1 more
TL;DR: In this paper, the modified CNDO method was used to calculate the electronic spectra of cyclopentadiene, the Cyclopentadienide ion, pyrrole, furan, pyrazole, imidazole, 2-pyrrolecarboxaldehyde, and furfural.