PHOTOSENSITIZATION VIA CHARGE TRANSFER OR REVERSIBLE ELECTRON TRANSFER. OXIRANE ISOMERIZATION AND SULFUR DIOXIDE EXTRUSION

P. K. DAS; A. J. MULLER; G. W. GRIFFIN; I. R. GOULD; C. ‐H TUNG; N. J. TURRO

doi:10.1111/j.1751-1097.1984.tb08178.x

PHOTOSENSITIZATION VIA CHARGE TRANSFER OR REVERSIBLE ELECTRON TRANSFER. OXIRANE ISOMERIZATION AND SULFUR DIOXIDE EXTRUSION

P. K. DAS, A. J. MULLER, G. W. GRIFFIN, I. R. GOULD, C. ‐H TUNG, N. J. TURRO

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

15 Scopus citations

Abstract

Abstract— N, N, N^′ N^′‐Tetramethylbenzidine (NTMB) photosensitizes the cis‐trans isomerization of stilbene oxiranes (SO) and the extrusion of SO₂ from dibenzyl sulfone (DBS). In acetonitrile solution it is found that in the absence of SO or DBS, singlet NTMB undergoes three processes: intersystem crossing to triplet NTMB (φ_ISC= 0.63, k_ISC= 6.3 × 10⁷s^‐1), fluorescence (φ_f= 0.30, k_f= 3 × 10⁷s^‐1), and formation of a cation by electron ejection (φ_ion= 0.09). Both singlet and triplet sensitization are observed. A charge transfer or reversible electron transfer mechanism is proposed to explain the results.

Original language	English (US)
Pages (from-to)	281-285
Number of pages	5
Journal	Photochemistry and photobiology
Volume	39
Issue number	3
DOIs	https://doi.org/10.1111/j.1751-1097.1984.tb08178.x
State	Published - Mar 1984
Externally published	Yes

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry

Access to Document

10.1111/j.1751-1097.1984.tb08178.x

Cite this

@article{454ac5ec9a93483099a636cc8f61436b,

title = "PHOTOSENSITIZATION VIA CHARGE TRANSFER OR REVERSIBLE ELECTRON TRANSFER. OXIRANE ISOMERIZATION AND SULFUR DIOXIDE EXTRUSION",

abstract = "Abstract— N, N, N′ N′‐Tetramethylbenzidine (NTMB) photosensitizes the cis‐trans isomerization of stilbene oxiranes (SO) and the extrusion of SO2 from dibenzyl sulfone (DBS). In acetonitrile solution it is found that in the absence of SO or DBS, singlet NTMB undergoes three processes: intersystem crossing to triplet NTMB (φISC= 0.63, kISC= 6.3 × 107s‐1), fluorescence (φf= 0.30, kf= 3 × 107s‐1), and formation of a cation by electron ejection (φion= 0.09). Both singlet and triplet sensitization are observed. A charge transfer or reversible electron transfer mechanism is proposed to explain the results.",

author = "DAS, {P. K.} and MULLER, {A. J.} and GRIFFIN, {G. W.} and GOULD, {I. R.} and TUNG, {C. ‐H} and TURRO, {N. J.}",

year = "1984",

month = mar,

doi = "10.1111/j.1751-1097.1984.tb08178.x",

language = "English (US)",

volume = "39",

pages = "281--285",

journal = "Photochemistry and photobiology",

issn = "0031-8655",

publisher = "Wiley-Blackwell",

number = "3",

}

TY - JOUR

T1 - PHOTOSENSITIZATION VIA CHARGE TRANSFER OR REVERSIBLE ELECTRON TRANSFER. OXIRANE ISOMERIZATION AND SULFUR DIOXIDE EXTRUSION

AU - DAS, P. K.

AU - MULLER, A. J.

AU - GRIFFIN, G. W.

AU - GOULD, I. R.

AU - TUNG, C. ‐H

AU - TURRO, N. J.

PY - 1984/3

Y1 - 1984/3

N2 - Abstract— N, N, N′ N′‐Tetramethylbenzidine (NTMB) photosensitizes the cis‐trans isomerization of stilbene oxiranes (SO) and the extrusion of SO2 from dibenzyl sulfone (DBS). In acetonitrile solution it is found that in the absence of SO or DBS, singlet NTMB undergoes three processes: intersystem crossing to triplet NTMB (φISC= 0.63, kISC= 6.3 × 107s‐1), fluorescence (φf= 0.30, kf= 3 × 107s‐1), and formation of a cation by electron ejection (φion= 0.09). Both singlet and triplet sensitization are observed. A charge transfer or reversible electron transfer mechanism is proposed to explain the results.

AB - Abstract— N, N, N′ N′‐Tetramethylbenzidine (NTMB) photosensitizes the cis‐trans isomerization of stilbene oxiranes (SO) and the extrusion of SO2 from dibenzyl sulfone (DBS). In acetonitrile solution it is found that in the absence of SO or DBS, singlet NTMB undergoes three processes: intersystem crossing to triplet NTMB (φISC= 0.63, kISC= 6.3 × 107s‐1), fluorescence (φf= 0.30, kf= 3 × 107s‐1), and formation of a cation by electron ejection (φion= 0.09). Both singlet and triplet sensitization are observed. A charge transfer or reversible electron transfer mechanism is proposed to explain the results.

UR - http://www.scopus.com/inward/record.url?scp=84989715083&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84989715083&partnerID=8YFLogxK

U2 - 10.1111/j.1751-1097.1984.tb08178.x

DO - 10.1111/j.1751-1097.1984.tb08178.x

M3 - Article

AN - SCOPUS:84989715083

SN - 0031-8655

VL - 39

SP - 281

EP - 285

JO - Photochemistry and photobiology

JF - Photochemistry and photobiology

IS - 3

ER -

PHOTOSENSITIZATION VIA CHARGE TRANSFER OR REVERSIBLE ELECTRON TRANSFER. OXIRANE ISOMERIZATION AND SULFUR DIOXIDE EXTRUSION

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this