579510-35-3Relevant academic research and scientific papers
Investigation of cation complexation behavior of azacrown ether substituted benzochromene
Fedorova,Maurel,Chebun'kova,Strokach,Valova,Kuzmina,Howard,Wenzel,Gloe,Lokshin,Samat
, p. 469 - 483 (2007)
The study of the complex formation of 3,3-diphenyl-3H-benzo[f]chromenes containing aza-18-crown-6-ether, diaza-18-crown-6-ether or morpholine units with alkali, alkaline earth, heavy and transition metal cations in acetonitrile is reported. The spectrosco
Synthesis and photochromism of novel chromene derivatives bearing a monoazacrown ether moiety
Ahmed, Saleh A.,Tanaka, Mutsuo,Ando, Hisanori,Iwamoto, Hitoshi,Kimura, Keiichi
, p. 2437 - 2442 (2003)
Crowned chromenes - four novel naphthopyrans (chromenes) bearing monoaza-12-crown-4, -15-crown-5, -18-crown-6, and a noncyclic analogue at the 5-position-were synthesized, and their photochromism in acetonitrile was examined in the presence of alkali and alkaline-earth metal ions. Incorporation of crown ether units to chromene moieties facilitated to a great extent both the thermal isomerization and photoisomerization of the chromene moiety, reflecting the metal-ion-binding ability of the crown ether moiety. Comparison of the crowned chromenes with the corresponding crowned spirobenzopyrans reveals that photochromism of the crowned chromene reflects an interaction between the metal ion and the crown ether moiety that is stronger than that of the crowned spirobenzopyran, and shows only positive photochromism with significant red-shifts in the UV/Vis absorption spectra, in contrast to the crowned spirobenzopyrans reported previously. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003).
Investigation of the azacrown-ether substituted naphtopyranes
Chebun'kova,Gromov,Strokach, Yu P.,Valova,Alfimov,Fedorova,Lokshin,Samat
, p. 67 - 73 (2005)
The study of the complexation of 3,3-diphenyl-3H-benzo[f]chromenes containing an aza-15-crown-5-ether or morpholine units with Mg2+, Ba2+ and Pb2+ in acetonitrile are reported. The spectroscopic and kinetic behaviour of th
Synthesis and complexation properties of photochromic benzochromenes containing aza- and diaza- 18-crown-6-ether fragments
Fedorova,Strokach,Chebun'kova,Valova,Gromov,Alfimov,Lokshin,Samat
, p. 287 - 294 (2007/10/03)
Complex formation of Mg2+, Ba2+, and Pb2+ perchlorates with 3,3-diphenyl-3H-benzo[f]chromenes containing aza-and diaza-18-crown-6-ether or morpholine fragments was studied. The strong influence of the metal cations on the
