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- W3215441691 endingPage "1755" @default.
- W3215441691 startingPage "1745" @default.
- W3215441691 abstract "Formazan molecules exhibit photochromism because isomerization processes following excitation may occur in both the azo group and the hydrazone group; thus, each formazan may be present in various forms with different colors. The ratio of these forms depends on the illumination conditions and the environment of the formazan with a most incisive sensibility of the thermal anti-syn relaxation of the C═N toward slight traces of impurities in toluene solutions, as reported most prominently for 1,3,5-triphenylformazan. Here, we study the latter compound with transient absorption spectroscopy to investigate the role of these traces by adding small amounts of both protic and aprotic cosolvents. Whereas the activation barrier decreases if the binary solvent mixture has a higher polarity, the role of hydrogen bonding can have a reverse impact on the thermal isomerization rate. Both the addition of an aprotic cosolvent and the addition of a protic cosolvent can slow the reaction due to their hydrogen-bond accepting and hydrogen-bond donating properties, respectively. In the case of methanol as a cosolvent, this effect outweighed that of the polarity increase for small concentrations, which was not observed for the fluorinated alcohol hexafluoroisopropanol. The results are explained in the context of a competition between solute-cosolvent and cosolvent-cosolvent hydrogen bonding." @default.
- W3215441691 created "2021-12-06" @default.
- W3215441691 creator A5000165182 @default.
- W3215441691 creator A5035700677 @default.
- W3215441691 creator A5060491465 @default.
- W3215441691 date "2021-11-29" @default.
- W3215441691 modified "2023-09-27" @default.
- W3215441691 title "Sensitivity of Isomerization Kinetics of 1,3,5-Triphenylformazan on Cosolvents Added to Toluene" @default.
- W3215441691 cites W123114899 @default.
- W3215441691 cites W1849819493 @default.
- W3215441691 cites W1966978537 @default.
- W3215441691 cites W1970402936 @default.
- W3215441691 cites W1973457469 @default.
- W3215441691 cites W1975328742 @default.
- W3215441691 cites W1979280327 @default.
- W3215441691 cites W1982776045 @default.
- W3215441691 cites W1986821812 @default.
- W3215441691 cites W1998768159 @default.
- W3215441691 cites W2000861011 @default.
- W3215441691 cites W2001575476 @default.
- W3215441691 cites W2001914910 @default.
- W3215441691 cites W2002880423 @default.
- W3215441691 cites W2004789113 @default.
- W3215441691 cites W2005199465 @default.
- W3215441691 cites W2005633169 @default.
- W3215441691 cites W2006101880 @default.
- W3215441691 cites W2010056946 @default.
- W3215441691 cites W2011393168 @default.
- W3215441691 cites W2012675110 @default.
- W3215441691 cites W2012790561 @default.
- W3215441691 cites W2013544855 @default.
- W3215441691 cites W2015229726 @default.
- W3215441691 cites W2017234868 @default.
- W3215441691 cites W2018023283 @default.
- W3215441691 cites W2018106504 @default.
- W3215441691 cites W2018269593 @default.
- W3215441691 cites W2018762669 @default.
- W3215441691 cites W2023687954 @default.
- W3215441691 cites W2026522646 @default.
- W3215441691 cites W2026610997 @default.
- W3215441691 cites W2028048476 @default.
- W3215441691 cites W2028227134 @default.
- W3215441691 cites W2034817473 @default.
- W3215441691 cites W2039017788 @default.
- W3215441691 cites W2041337397 @default.
- W3215441691 cites W2041407814 @default.
- W3215441691 cites W2048144722 @default.
- W3215441691 cites W2050305450 @default.
- W3215441691 cites W2054388984 @default.
- W3215441691 cites W2057003691 @default.
- W3215441691 cites W2057837654 @default.
- W3215441691 cites W2058783884 @default.
- W3215441691 cites W2062110622 @default.
- W3215441691 cites W2062879830 @default.
- W3215441691 cites W2064284179 @default.
- W3215441691 cites W2064297177 @default.
- W3215441691 cites W2069586025 @default.
- W3215441691 cites W2071117176 @default.
- W3215441691 cites W2071287025 @default.
- W3215441691 cites W2072624193 @default.
- W3215441691 cites W2076436210 @default.
- W3215441691 cites W2079109599 @default.
- W3215441691 cites W2089555828 @default.
- W3215441691 cites W2096564283 @default.
- W3215441691 cites W2112190516 @default.
- W3215441691 cites W2114918609 @default.
- W3215441691 cites W2134049184 @default.
- W3215441691 cites W2145706728 @default.
- W3215441691 cites W2147373300 @default.
- W3215441691 cites W2154775028 @default.
- W3215441691 cites W2156242102 @default.
- W3215441691 cites W2162684111 @default.
- W3215441691 cites W2170177207 @default.
- W3215441691 cites W2325213746 @default.
- W3215441691 cites W2326478111 @default.
- W3215441691 cites W2334748593 @default.
- W3215441691 cites W2334827441 @default.
- W3215441691 cites W2435060256 @default.
- W3215441691 cites W2479926457 @default.
- W3215441691 cites W2487649280 @default.
- W3215441691 cites W2517357742 @default.
- W3215441691 cites W2529458179 @default.
- W3215441691 cites W2607012428 @default.
- W3215441691 cites W2616042703 @default.
- W3215441691 cites W2763233184 @default.
- W3215441691 cites W2768088257 @default.
- W3215441691 cites W2794291180 @default.
- W3215441691 cites W2809847880 @default.
- W3215441691 cites W2898444779 @default.
- W3215441691 cites W2904722856 @default.
- W3215441691 cites W2947271379 @default.
- W3215441691 cites W2949486518 @default.
- W3215441691 cites W2951505686 @default.
- W3215441691 cites W2957575234 @default.
- W3215441691 cites W2963511289 @default.
- W3215441691 cites W2979522175 @default.
- W3215441691 cites W2993088332 @default.
- W3215441691 cites W3047301109 @default.