Electronic investigation of light-induced reversible coordination of Co(II)/spiropyran complex
作者： Flávio B. Miguez , Izadora F. Reis , Lucas P. Dutra , Igor M.S. Silva , Thiago Verano-Braga
DOI: 10.1016/J.DYEPIG.2019.107757
关键词: Absorption spectroscopy 、 Photodegradation 、 Photochemistry 、 Spectroscopy 、 Spiropyran 、 Cobalt 、 Photochromism 、 Solvatochromism 、 Chemistry 、 Ligand
摘要: Abstract Herein, synthesis and characterization of a cobalt (II) complex using spiropyran as its ligand was described. Solid (CoMC) obtained novel ultraviolet radiation-induced precipitation technique, FTIR-ATR spectroscopy demonstrated the binding sites involved in coordination. Computational calculations were crucial to understand experimental results, demonstrating frontiers orbitals tetrahydrofuran. Moreover, mass spectrometry revealed 1:2 Co(II):ligand stoichiometry. By means UV–vis absorption spectroscopy, complexation confirmed photochromic solvatochromic characteristics free studied. These results showed that did not present would be expected pattern regarding properties, while did. Reversibility experiments exposed high resistance photodegradation isopropanol, comparing other solvents tested.
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