One- and two-photon-induced isomerization of styryl compounds possessing A-π-A' structure

Beata Jędrzejewska , Marta Gordel , Małgorzata A. Kaczorowska , Janusz Szeremeta , Marek Józefowicz , Marek Samoć


Two styryl compounds with A-π-A′ structure that feature a fixed pyridine ring as an electron acceptor (A) and pyridine or 5,6,7,8-tetrahydroisoquinoline cation as the other acceptor (A′) have been synthesized. Their structures were elucidated by means of NMR and IR spectroscopy. One-photon fluorescence, fluorescence quantum yields and lifetimes were investigated. It was found that both visible (408 nm) and near-infrared (800 nm) light promotes the conversion of the E-isomer of the studied compounds to the Z-isomer. Under the UV irradiation (310 nm) the obtained Z-isomer reverts to the initial form in tens of minutes. The observed inter-conversion was found to be fast and efficient. The trans-to-cis isomerization was followed by decomposition of the compound upon longer than 100 s exposure to light as indicated from mass spectra.
Author Beata Jędrzejewska
Beata Jędrzejewska,,
, Marta Gordel
Marta Gordel,,
, Małgorzata A. Kaczorowska
Małgorzata A. Kaczorowska,,
, Janusz Szeremeta
Janusz Szeremeta,,
, Marek Józefowicz (FMPI / IEP)
Marek Józefowicz,,
- Institute of Experimental Physics
, Marek Samoć
Marek Samoć,,
Journal seriesDyes and Pigments, ISSN 0143-7208, (A 40 pkt)
Issue year2016
Publication size in sheets0.5
Keywords in Englishstyryl dyes, synthesis, one- and two-photon induced, isomerization
ASJC Classification1508 Process Chemistry and Technology; 1500 General Chemical Engineering
Languageen angielski
Score (nominal)40
Score sourcejournalList
ScoreMinisterial score = 40.0, 19-11-2019, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 19-11-2019, ArticleFromJournal
Publication indicators WoS Citations = 1; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.065; WoS Impact Factor: 2016 = 3.473 (2) - 2016=3.417 (5)
Citation count*2 (2020-01-12)
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