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초록
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.
키워드
Reverse thermochromism; Aqueous binary solvent mixtures; Prototropic equilibrium; E-TE(BM); E-T(BM); Preferential solvation; ISOMERIZATION; INTERCONVERSION; 6-CARBOXYLATES; BEHAVIOR
- 제목
- Facile Evaluation of Thermodynamic Parameters for Reverse Thermochromism of Indolinobenzospiropyran-6-carboxylates in Aqueous Binary Solvents
- 저자
- Keum, Sam-Rok; Ma, So-Young; Lim, Hyun-Woo; Han, Tae-Hwi; Choi, Kyu-Hyun
- 발행일
- 2012-08-20
- 유형
- Article
- 권
- 33
- 호
- 8
- 페이지
- 2683 ~ 2688