BORN, R., W. FISCHER, Dominik HEGER, B. TOKARCZYK and Jakob WIRZ. Photochromism of phenoxynaphthacenequinones: diabatic or adiabatic phenyl group transfer? PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES. 2007, 6/2007, No 5, p. 552-559, 7 pp. ISSN 1474-905X.
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Basic information
Original name Photochromism of phenoxynaphthacenequinones: diabatic or adiabatic phenyl group transfer?
Name in Czech Fotochromismus fenoxynaftacenchinonů: diabatický nebo adiabatický přenos?
Authors BORN, R. (276 Germany), W. FISCHER (756 Switzerland), Dominik HEGER (203 Czech Republic, guarantor), B. TOKARCZYK (616 Poland) and Jakob WIRZ (203 Czech Republic).
Edition PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2007, 1474-905X.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 10402 Inorganic and nuclear chemistry
Country of publisher United Kingdom of Great Britain and Northern Ireland
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 2.208
RIV identification code RIV/00216224:14310/07:00022693
Organization unit Faculty of Science
UT WoS 000246311700010
Keywords in English LASER FLASH-PHOTOLYSIS; CONJUGATED RADICALS; ELECTRON-TRANSFER; PHOTOISOMERIZATION; MECHANISM; DERIVATIVES; SINGLET; STATE; 6-PHENOXY-512-NAPHTHACENEQUINONE; PHOTOCHEMISTRY
Tags 6-PHENOXY-512-NAPHTHACENEQUINONE, CONJUGATED RADICALS, DERIVATIVES, ELECTRON-TRANSFER, LASER FLASH-PHOTOLYSIS, mechanism, Photochemistry, PHOTOISOMERIZATION, SINGLET, state
Tags International impact, Reviewed
Changed by Changed by: doc. Mgr. Dominik Heger, Ph.D., učo 11279. Changed: 30/3/2010 13:23.
Abstract
The photochromic reactions of 6-phenyloxy-5,12-naphthacenequinone ( 1) and of the 6,11-diphenyloxy derivative 2 were investigated by subpicosecond pump-probe, photoacoustic, and emission spectroscopies, and by nanosecond laser. ash photolysis ( LFP). The transformation of the trans-quinones 1 and 2 to their ana-isomers proceeds via short-lived triplet states of 1 and 2 ( tau ca. 2 ns) and spiro-bridged biradical intermediates ( ca. 6 ns). The long-lived ( mu s) ana-triplets that are observed by LFP of 1 and 2 are formed ( predominantly) by reexcitation of the biradicals and ana-quinones, which appear during the laser pulse. The reverse reaction, ana -> trans, proceeds exclusively from the lowest pi, pi* singlet state of the ana-quinones.
Abstract (in Czech)
The photochromic reactions of 6-phenyloxy-5,12-naphthacenequinone ( 1) and of the 6,11-diphenyloxy derivative 2 were investigated by subpicosecond pump-probe, photoacoustic, and emission spectroscopies, and by nanosecond laser. ash photolysis ( LFP). The transformation of the trans-quinones 1 and 2 to their ana-isomers proceeds via short-lived triplet states of 1 and 2 ( tau ca. 2 ns) and spiro-bridged biradical intermediates ( ca. 6 ns). The long-lived ( mu s) ana-triplets that are observed by LFP of 1 and 2 are formed ( predominantly) by reexcitation of the biradicals and ana-quinones, which appear during the laser pulse. The reverse reaction, ana -> trans, proceeds exclusively from the lowest pi, pi* singlet state of the ana-quinones.
Links
MSM0021622413, plan (intention)Name: Proteiny v metabolismu a při interakci organismů s prostředím
Investor: Ministry of Education, Youth and Sports of the CR, Proteins in metabolism and interaction of organisms with the environment
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