Photocycloreversion
WebJun 27, 1986 · Therefore one can assume that there is a fast randomization of vibrational energy in HCD. From the exothermicity of photocycloreversion of about 15000 cm~1 [3] an upper limit of the internal temperature equivalent to 600 K is estimated [11]. Extinction coefficients on the low-energy side of the SQ -> Si band are known to increase with … WebJun 3, 2012 · In 1978 the photocycloreversion reaction was rediscovered by Rigaudy et al. for the endoperoxide of 9,10-diphenylanthracene (ref. 9). A short time later in 1979, independently Viallet et al., Srinivasan et al. and Brauer et al. reported the photochemical cycloreversion of different endoperoxides (refs. 10–12). Thus rearrangement and ...
Photocycloreversion
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WebJan 16, 2008 · A novel thermally stable photoresponsive fluorescent switch system was designed by utilizing [2+2] photocycloreversion between diarylethylene and … WebApr 15, 2012 · Cycloreversion processes of a 1,2-bis(thiazolyl) perfluorocyclopentene photochromic diarylethene 1 with extremely low reaction yield under steady state …
WebThe photocycloreversion reaction of a diarylethene polymer in the vicinity of silver nanoparticles was enhanced by 2–6 times relative to the reaction without the … WebCycloreversion can be described as the reversal of cycloaddition, i.e. conversion of a cyclic compound to its acyclic constituents, from which it is (at least formally) derived. It is a …
Webphotocycloreversion. Definition from Wiktionary, the free dictionary. Jump to navigation Jump to search. English Etymology . photo-+ cycloreversion. Noun . photocycloreversion … WebPhotocycloreversion of the closed form of the thieno[3,2‑b]phosphole unit (1-cc → 1-co), with the color changes from purplish grey to greenish grey, would take place by photoirradiation at ca. 500 nm.
WebJul 27, 2001 · Both photocyclization and photocycloreversion quantum yields of the diarylethene with nitronyl nitroxide radicals were found to increase with the increase in the π-conjugated chain length. Photoswitching of the magnetic interaction between two nitronyl nitroxide radicals was studied by means of ESR spectroscopy. The change in exchange ...
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