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http://dx.doi.org/10.5012/bkcs.2012.33.8.2683

Facile Evaluation of Thermodynamic Parameters for Reverse Thermochromism of Indolinobenzospiropyran-6-carboxylates in Aqueous Binary Solvents  

Keum, Sam-Rok (Department of Advanced Material Chemistry, Korea University, Sejong Campus)
Ma, So-Young (Department of Advanced Material Chemistry, Korea University, Sejong Campus)
Lim, Hyun-Woo (Department of Advanced Material Chemistry, Korea University, Sejong Campus)
Han, Tae-Hwi (Department of Advanced Material Chemistry, Korea University, Sejong Campus)
Choi, Kyu-Hyun (Department of Advanced Material Chemistry, Korea University, Sejong Campus)
Publication Information
Bulletin of the Korean Chemical Society / v.33, no.8, 2012 , pp. 2683-2688 More about this Journal
Abstract
The position of the thermodynamic equilibrium for reverse thermochromic spiropyran 6-carboxylates (SP-COOHs) was easily determined in aqueous binary mixtures, such as water-methanol, water-acetonitrile and water-dimethyl sulfoxide. The existence of more than one type of interconvertible species of the ring-opened form of SP-COOH in aqueous binary solvents enables us to evaluate the molar extinction coefficients of the ring-opened species of SP-COOH and to obtain the thermodynamic parameters.
Keywords
Reverse thermochromism; Aqueous binary solvent mixtures; Prototropic equilibrium; $E_{TE}$(BM); $E_T$(BM); Preferential solvation;
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