Application of response surface methodology for exploring beta-cyclodextrin effects on the decoloration of spiropyran complexes

作者：Wang Li Fen^*

来源：Chemical Physics Letters, 2016, 662: 296-305.

DOI：10.1016/j.cplett.2016.09.068

• Spiropyran
• beta-cyclodextrin polymer
• Response surface methodology
• Quantum chemistry calculation

Response surface method is applied here to trace the photochromic path and explore the substituent and beta-cyclodextrin effects on the decoloration of the spiropyran/beta-cyclodextrin polymer (SP/CDP) complex. Calculations support the ultraviolet/visible experimental results, suggesting that introducing an electron-withdrawing group to the benzopyryl moiety of SPs favors an enhancement in their decoloration, whereas replacing the benzopyryl with a naphthopyryl moiety obstructs their decoloration. CDP complexation weakens the C-1-O bond of the closed SP form and enhances the polar zwitterionic structure in the open photomerocynine form. However, the electron-withdrawing group strengthens the interaction of benzopyryl SPs with CDP, thereby hindering their decoloration.

• 出版日期2016-10-1