Photophysics of 3-Substituted Benzanthrones: Substituent and Solvent Control of Intersystem Crossing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F03%3A00000537" target="_blank" >RIV/00216275:25310/03:00000537 - isvavai.cz</a>

Alternative codes found

RIV/68407700:21340/03:04095692

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photophysics of 3-Substituted Benzanthrones: Substituent and Solvent Control of Intersystem Crossing

Original language description

The solvent dependence of absorption and fluorescence spectra, fluorescence lifetimes, and quantum yields of various 3-substituted benzanthrone derivatives have been investigated. A consistent correlation between fluorescence quantum yields and emittingstate energy has been found that holds for all 6 derivatives in 11 solvents. The experimental data tohether with the results of semiempirical quantum chemical calculations indicate that the main quenching chanel of the fluorescent S1(pi, pi*) excited state is intersystem crossing to an upper (n, pi*) triplet state, Tn. The rate constant and efficiency of intersystem crossing between these two states are strongly influenced by the substituent and by the solvent polarity, as both modulate the singlet state energy and the S1 - Tn energy gap. The rate constant of direct S1 - T1 intersystem crossing is small in most systems but appears to increase with a decrease in the energy of the S1 state.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CF - Physical chemistry and theoretical chemistry

OECD FORD branch

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Project

<a href="/en/project/ME%20559" target="_blank" >ME 559: Photophysics of functional molleculas and spectroscopy for mollecular electronics</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2003

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

J. Physical Chem. A

ISSN

1089-5639

e-ISSN

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Volume of the periodical

107

Issue of the periodical within the volume

46

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

9740-9746

UT code for WoS article

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EID of the result in the Scopus database

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