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001-es BibID:	BIBFORM079817
035-os BibID:	(cikkazonosító)2434 (Scopus)85068367554 (WoS)000476700300088 (PMID)31269691
Első szerző:	Kovács Sándor Lajos (vegyészmérnök)
Cím:	Effect of the Substitution Position on the Electronic and Solvatochromic Properties of Isocyanoaminonaphthalene (ICAN) Fluorophores / Sándor Lajos Kovács, Miklós Nagy, Péter Pál Fehér, Miklós Zsuga, Sándor Kéki
Dátum:	2019
ISSN:	1420-3049
Megjegyzések:	The properties of 1,4-isocyanoaminonaphthalene (1,4-ICAN) and 2,6-isocyanoaminonaphthalene (2,6-ICAN) isomers are discussed in comparison with those of 1,5-isocyanoaminonaphthalene (1,5-ICAN), which exhibits a large positive solvatochromic shift similar to that of Prodan. In these isocyanoaminonaphthalene derivatives, the isocyano and the amine group serve as the donor and acceptor moieties, respectively. It was found that the positions of the donor and the acceptor groups in these naphthalene derivatives greatly influence the Stokes and solvatochromic shifts, which decrease in the following order: 1,5-ICAN > 2,6-ICAN > 1,4-ICAN. According to high-level quantum chemical calculations, this order is well correlated with the charge transfer character of these compounds upon excitation. Furthermore, unlike 1,5-ICAN, the 1,4-ICAN and 2,6-ICAN isomers showed relatively high quantum yields in water, that were determined to be 0.62 and 0.21, respectively. In addition, time-resolved fluorescence experiments revealed that both the radiative and non-radiative decay rates for these three ICAN isomers varied unusually with the solvent polarity parameter ET(30). The explanations of the influence of the solvent polarity on the resulting steady-state and time-resolved fluorescence emission spectra are also discussed.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk isocyano-aminonaphthalenes solvatochromism fluorescence electronic absorption push-pull dyes
Megjelenés:	Molecules. - 24 : 13 (2019), p. 1-15. -
További szerzők:	Nagy Miklós Fehér Péter Pál (1991-) (vegyész) Zsuga Miklós (1944-) (polimer kémikus) Kéki Sándor (1964-) (polimer kémikus)
Pályázati támogatás:	GINOP-2.3.2-15-2016-00041 GINOP GINOP-2.3.3-15-2016-00004 GINOP OTKA K-116465 OTKA
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