The trans/cis photoisomerization in hydrogen bonded complexes with stability controlled by substituent effects: 3-(6-aminopyridin-3-yl)acrylate case study
Adam Kwiatkowski , Beata Jędrzejewska , Marek Józefowicz , Izabela Grela , Borys Ośmiałowski
AbstractThe association of aminopyridine-based acrylic acid and its salt was studied by NMR titration experiments. The AA (acceptor, acceptor) hydrogen-bonding pattern present in the salt forms a complex readily with a DD (donor, donor) hydrogen-bonding pattern of the substituted ureas even in polar and competitive environment. The double carbon– carbon bond in the acrylic acid derivative is subjected to photoisomerization. This is dependent on the association with substituted urea derivatives. The substituent in ureas influences the trans/cis isomerization kinetics and position of the photostationary state. Two mechanisms that in fluence the photoisomerization were proposed. To the best of ourknowledge, the trans/cis photoisomerization in fluenced by the substituent in such a hydrogen-bonding pattern has not observed previously. It was shown that interaction with urea derivatives causes lowering of the trans-to-cis photoreaction rates.
|Journal series||RSC Advances, ISSN 2046-2069, (A 30 pkt)|
|Publication size in sheets||0.6|
|License||Journal (articles only); published final; ; with publication|
|Score|| = 30.0, 12-07-2018, ArticleFromJournal|
= 35.0, 12-07-2018, ArticleFromJournal
|Publication indicators||: 2016 = 3.108 (2) - 2016=3.257 (5)|
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