Journal ArticleDOI
Mechanisms of Photochemical Reactions in Solution. XXXIII. Intersystem Crossing Efficiencies
TLDR
In this article, a simple method for measurement of quantum yields for the singlet→triplet crossing process in solution has been developed, where the compound to be tested is used as a sensitizer for one or more cis-trans isomerization reactions and the quantum yield of the induced process is measured.Abstract:
A simple method for measurement of quantum yields for the singlet→triplet crossing process in solution has been developed. The compound to be tested is used as a sensitizer for one or more cis—trans isomerization reactions and the quantum yield of the induced process is measured. The results are discussed brieflyread more
Citations
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Journal ArticleDOI
Crystallization-Induced Phosphorescence of Pure Organic Luminogens at Room Temperature
Wang Zhang Yuan,Xiao Yuan Shen,Hui Zhao,Jacky Wing Yip Lam,Li Tang,Ping Lu,Chunlei Wang,Yang Liu,Zhiming Wang,Qiang Zheng,Jing Zhi Sun,Yuguang Ma,Ben Zhong Tang +12 more
TL;DR: In this paper, the authors reported efficient phosphorescence from the crystals of benzophenone and its derivatives with a general formula of (X-C6H4)2C═O (X = F, Cl, Br) as well as methyl 4-bromobenzoate and 4,4′-dibromobiphenyl under ambient conditions.
Journal ArticleDOI
Room-temperature phosphorescence from organic aggregates
TL;DR: In this article, the authors analyzed key photophysical processes related to triplet excitons, including intersystem crossing, radiative and non-radiative decay, and quenching processes.
Journal ArticleDOI
Triplet state dissolved organic matter in aquatic photochemistry: reaction mechanisms, substrate scope, and photophysical properties
TL;DR: It is proposed that through the use of appropriate sets of probe compounds and model photosensitizers an improved estimation of the distribution of triplet energies and one-electron reduction potentials of 3CDOM* can be achieved.
Journal ArticleDOI
A Compilation of Physical, Spectroscopic and Photophysical Properties of Polycyclic Aromatic Hydrocarbons
Reza Dabestani,Ilia N. Ivanov +1 more
TL;DR: A large body of work on this subject has appeared in the literature in recent years as discussed by the authors, including partitioning of polycyclic aromatic hydrocarbons (PAH) between air, water, soil or sediments.
Journal ArticleDOI
Visible light photocatalysis of [2+2] styrene cycloadditions by energy transfer.
Zhan Lu,Tehshik P. Yoon +1 more
TL;DR: In contrast to previous reports of visible light photoredox catalysis, the mechanism of this process involves photosensitization by energy transfer and not electron transfer.
References
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Journal ArticleDOI
A New Sensitive Chemical Actinometer. II. Potassium Ferrioxalate as a Standard Chemical Actinometer
C. G. Hatchard,C. A. Parker +1 more
TL;DR: In this paper, a detailed study has been made of the photolysis of the acidified solutions previously recommended for chemical actinometry, and accurate values of quantum efficiency have been determined at twelve wavelengths between 254 and 578 m$\mu $, and the effect of temperature, light intensity and of photolyte composition have been investigated.
Journal ArticleDOI
Spin—Orbit Coupling and the Radiationless Processes in Nitrogen Heterocyclics
TL;DR: In this paper, the matrix elements of the spin-orbit operator between the zero-order (spin-free) (n, π*) states of nitrogen heterocyclics are examined.
Journal ArticleDOI
Theory of the Electronic Spectra and Structure of the Polyacenes and of Alternant Hydrocarbons
TL;DR: In this paper, a previously given theory of the electronic spectra and structure of complex unsaturated molecules is further elucidated by listing specific formulas for the charge density, bond order, transition moment, and configuration interaction matrix elements.