DOI: 10.1111/j.1751-1097.1973.tb06329.x. THE <i>IN VITRO</i> PHOTOCHEMISTRY OF BIOLOGICAL MOLECULES‐III. ABSORPTION SPECTRA, LIFETIMES AND RATES OF OXYGEN QUENCHING OF THE TRIPLET STATES OF β‐CAROTENE, RETINAL AND RELATED POLYENES

THE IN VITRO PHOTOCHEMISTRY OF BIOLOGICAL MOLECULES‐III. ABSORPTION SPECTRA, LIFETIMES AND RATES OF OXYGEN QUENCHING OF THE TRIPLET STATES OF β‐CAROTENE, RETINAL AND RELATED POLYENES

10.1111/j.1751-1097.1973.tb06329.x

Crossref journal-article

Wiley

Photochemistry and Photobiology (311)

Abstract

Abstract— The triplet‐triplet absorption spectra of six polyenes have been characterised using flash photolysis, in the presence of anthracene as sensitizer, and pulse radiolysis, in the absence of a sensitizer. The polyenes include several which contain carbonyl groups whose triplet states, unlike retinal, could not be detected unsensitized by flash photolysis. The triplet lifetimes appear to be a function of the number of conjugated double bonds, and vary between 7 and 14 μ sec. In general, the longer the polyene, the shorter the lifetime. An empirical linear relation was found between the frequencies of the polyene triplet‐triplet absorption maxima, and the frequencies of the corresponding ground singlet‐singlet maxima. The rate constants for quenching by oxygen of nine polyene triplet states were determined to lie in the range 2–7 × 109M‐1 sec‐1. The possible mechanisms for oxygen quenching of triplet states are discussed and analogies between the results for oxygen quenching of polyenes and of polyacenes are drawn. The rate constant for oxygen quenching of all‐trans‐β‐carotene triplet was the same in benzene and hexane.

Bibliography

TRUSCOTT, T. O., LAND, E. J., & SYKES, A. (1973). THE IN VITRO PHOTOCHEMISTRY OF BIOLOGICAL MOLECULESâIII. ABSORPTION SPECTRA, LIFETIMES AND RATES OF OXYGEN QUENCHING OF THE TRIPLET STATES OF Î²âCAROTENE, RETINAL AND RELATED POLYENES. Photochemistry and Photobiology, 17(1), 43â51. Portico.

Authors 3

T. O. TRUSCOTT (first)
E. J. LAND (additional)
A. SYKES (additional)

References 31 Referenced 100

10.1021/j150573a027
10.1016/0079-6107(67)90007-7
10.1039/tf9666201519
10.1098/rspa.1965.0166
10.1021/ja00720a036
10.1021/ja01024a061
10.1021/ja00863a009
10.1021/ja01019a002
Hulme B. E.(1971)Ph.D. Thesis University of Salford.
10.1063/1.1840943
10.1021/cr60272a004
10.1088/0950-7671/41/8/302
10.1039/tf9696502815
10.1111/j.1751-1097.1971.tb06119.x
{'key': 'e_1_2_1_16_1', 'first-page': '1770', 'volume': '263', 'author': 'Mathis P.', 'year': '1966', 'journal-title': 'Compt. Rend.'} / Compt. Rend. by Mathis P. (1966)
10.1111/j.1751-1097.1969.tb05909.x
10.1111/j.1751-1097.1972.tb06235.x
{'key': 'e_1_2_1_19_1', 'first-page': '141', 'volume': '62', 'author': 'Miwa T.', 'year': '1968', 'journal-title': 'Scient. Pap. Inst. Phys. Chem. Res. (Toyko)'} / Scient. Pap. Inst. Phys. Chem. Res. (Toyko) by Miwa T. (1968)
10.1016/0009-2614(70)87019-1
10.1051/jcp/1958550705
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{'key': 'e_1_2_1_23_1', 'first-page': '13', 'volume': '24', 'author': 'Schenck G. O.', 'year': '1970', 'journal-title': 'Chimia'} / Chimia by Schenck G. O. (1970)
{'key': 'e_1_2_1_24_1', 'first-page': '38', 'volume-title': 'Progress in Physical Organic Chemistry', 'author': 'Simmons H. E.', 'year': '1970'} / Progress in Physical Organic Chemistry by Simmons H. E. (1970)
SykesA.andT. G.Truscott(1969a)Chem. Commun.274. (10.1039/c29690000274)
SykesA.andT. G.Truscott(1969b)Chem. Commun.929. (10.1039/c29690000929)
10.1039/tf9716700679
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10.1063/1.1672633
10.1111/j.1751-1097.1970.tb06065.x
10.1515/znb-1969-0818
10.1007/978-3-7091-5548-6

Dates

Type	When
Created	17 years, 7 months ago (Jan. 2, 2008, 3:47 p.m.)
Deposited	1 year, 9 months ago (Nov. 6, 2023, 6:44 p.m.)
Indexed	3 weeks, 4 days ago (Aug. 6, 2025, 8:53 a.m.)
Issued	52 years, 7 months ago (Jan. 1, 1973)
Published	52 years, 7 months ago (Jan. 1, 1973)
Published Online	17 years, 7 months ago (Jan. 2, 2008)
Published Print	52 years, 7 months ago (Jan. 1, 1973)

Funders 0

None

BibTeX

@article{TRUSCOTT_1973, title={THE IN VITRO PHOTOCHEMISTRY OF BIOLOGICAL MOLECULES‐III. ABSORPTION SPECTRA, LIFETIMES AND RATES OF OXYGEN QUENCHING OF THE TRIPLET STATES OF β‐CAROTENE, RETINAL AND RELATED POLYENES}, volume={17}, ISSN={1751-1097}, url={http://dx.doi.org/10.1111/j.1751-1097.1973.tb06329.x}, DOI={10.1111/j.1751-1097.1973.tb06329.x}, number={1}, journal={Photochemistry and Photobiology}, publisher={Wiley}, author={TRUSCOTT, T. O. and LAND, E. J. and SYKES, A.}, year={1973}, month=jan, pages={43–51} }

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