The problem of triplet self-quenching in thioketone photochemistry

V. Ramesh; N. Ramnath; V. Ramamurthy

doi:10.1016/0047-2670(83)80056-2

The problem of triplet self-quenching in thioketone photochemistry

V. Ramesh, N. Ramnath, V. Ramamurthy

Research output: Contribution to journal › Article › peer-review

18 Scopus citations

Abstract

The highly efficient quenching of the thioketone triplet state by ground state thioketones with various electronic and structural features was investigated by means of phosphorescence quenching measurements in a number of solvents. Electron-withdrawing groups conjugated to the thioketone chromophore and steric crowding around the lone pair of electrons on the sulphur atom tend to decrease the quenching rate. The ground state thioketone quencher acts as the donor and the excited thioketone phosphorescer acts as the acceptor in the quenching process. Possible involvement of triplet excimers was investigated but no excimer or heteroexcimer emission was observed.

Original language	English (US)
Pages (from-to)	141-148
Number of pages	8
Journal	Journal of Photochemistry
Volume	23
Issue number	2
DOIs	https://doi.org/10.1016/0047-2670(83)80056-2
State	Published - 1983
Externally published	Yes

Access to Document

10.1016/0047-2670(83)80056-2

Fingerprint Dive into the research topics of 'The problem of triplet self-quenching in thioketone photochemistry'. Together they form a unique fingerprint.

Cite this

@article{c32967dcfd844012ac67173c8c598c44,

title = "The problem of triplet self-quenching in thioketone photochemistry",

abstract = "The highly efficient quenching of the thioketone triplet state by ground state thioketones with various electronic and structural features was investigated by means of phosphorescence quenching measurements in a number of solvents. Electron-withdrawing groups conjugated to the thioketone chromophore and steric crowding around the lone pair of electrons on the sulphur atom tend to decrease the quenching rate. The ground state thioketone quencher acts as the donor and the excited thioketone phosphorescer acts as the acceptor in the quenching process. Possible involvement of triplet excimers was investigated but no excimer or heteroexcimer emission was observed.",

author = "V. Ramesh and N. Ramnath and V. Ramamurthy",

year = "1983",

doi = "10.1016/0047-2670(83)80056-2",

language = "English (US)",

volume = "23",

pages = "141--148",

journal = "Journal of Photochemistry",

issn = "0047-2670",

publisher = "Elsevier Sequoia",

number = "2",

}

TY - JOUR

T1 - The problem of triplet self-quenching in thioketone photochemistry

AU - Ramesh, V.

AU - Ramnath, N.

AU - Ramamurthy, V.

PY - 1983

Y1 - 1983

N2 - The highly efficient quenching of the thioketone triplet state by ground state thioketones with various electronic and structural features was investigated by means of phosphorescence quenching measurements in a number of solvents. Electron-withdrawing groups conjugated to the thioketone chromophore and steric crowding around the lone pair of electrons on the sulphur atom tend to decrease the quenching rate. The ground state thioketone quencher acts as the donor and the excited thioketone phosphorescer acts as the acceptor in the quenching process. Possible involvement of triplet excimers was investigated but no excimer or heteroexcimer emission was observed.

AB - The highly efficient quenching of the thioketone triplet state by ground state thioketones with various electronic and structural features was investigated by means of phosphorescence quenching measurements in a number of solvents. Electron-withdrawing groups conjugated to the thioketone chromophore and steric crowding around the lone pair of electrons on the sulphur atom tend to decrease the quenching rate. The ground state thioketone quencher acts as the donor and the excited thioketone phosphorescer acts as the acceptor in the quenching process. Possible involvement of triplet excimers was investigated but no excimer or heteroexcimer emission was observed.

UR - http://www.scopus.com/inward/record.url?scp=0343532881&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0343532881&partnerID=8YFLogxK

U2 - 10.1016/0047-2670(83)80056-2

DO - 10.1016/0047-2670(83)80056-2

M3 - Article

AN - SCOPUS:0343532881

VL - 23

SP - 141

EP - 148

JO - Journal of Photochemistry

JF - Journal of Photochemistry

SN - 0047-2670

IS - 2

ER -