2007
Photochromism of phenoxynaphthacenequinones: diabatic or adiabatic phenyl group transfer?
BORN, R., W. FISCHER, Dominik HEGER, B. TOKARCZYK, Jakob WIRZ et. al.Základní údaje
Originální název
Photochromism of phenoxynaphthacenequinones: diabatic or adiabatic phenyl group transfer?
Název česky
Fotochromismus fenoxynaftacenchinonů: diabatický nebo adiabatický přenos?
Autoři
BORN, R. (276 Německo), W. FISCHER (756 Švýcarsko), Dominik HEGER (203 Česká republika, garant), B. TOKARCZYK (616 Polsko) a Jakob WIRZ (203 Česká republika)
Vydání
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2007, 1474-905X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10402 Inorganic and nuclear chemistry
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 2.208
Kód RIV
RIV/00216224:14310/07:00022693
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000246311700010
Klíčová slova anglicky
LASER FLASH-PHOTOLYSIS; CONJUGATED RADICALS; ELECTRON-TRANSFER; PHOTOISOMERIZATION; MECHANISM; DERIVATIVES; SINGLET; STATE; 6-PHENOXY-512-NAPHTHACENEQUINONE; PHOTOCHEMISTRY
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 30. 3. 2010 13:23, doc. Mgr. Dominik Heger, Ph.D.
V originále
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.
Česky
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.
Návaznosti
| MSM0021622413, záměr |
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