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Facile Evaluation of Thermodynamic Parameters for Reverse Thermochromism of Indolinobenzospiropyran-6-carboxylates in Aqueous Binary Solvents
- Issue Date
- 20-8월-2012
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- Reverse thermochromism; Aqueous binary solvent mixtures; Prototropic equilibrium; E-TE(BM); E-T(BM); Preferential solvation
- Citation
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.33, no.8, pp.2683 - 2688
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- BULLETIN OF THE KOREAN CHEMICAL SOCIETY
- Volume
- 33
- Number
- 8
- Start Page
- 2683
- End Page
- 2688
- ISSN
- 0253-2964
- 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.
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