β-Cyclodextrin Induced Room Temperature Phosphorescence From 1-Bromonaphthalene in the Presence of Naphthalene and 1-Butanol

Abstract

Abstract: Intense room temperature phosphorescence(RTP)from host-guest inclusion complex of β-cyclodextrin(β-CD)with 1-bromonaphthalene(1-BrN),stabilized by naphthalene (N)and 1-butanol(B), has been investigated, It has been confirmed that Nand Bare incorporated into the nonpolar cavity of β-CDas the second guest and the third one.The extra space inside the cavity is further filled by Nand B, and β-CDmore effectively shields 1-BrN from quenchers in aqueous solution.Bcompletely hinders the formation of Nexcimer.The greater rigidity of the complex was achieved.Consequently, much more intense fluorescence of RTPappears in comparison with the ternary β-CD:1-BrN:Bor β-CD:1-BrN:Ncomplex.The limit of detection is 7.38×10^-8mol/Lfor 1-BrNand 1.36×10^-6 mol/L for N.

Key words: 1-Bromonaphthalene, β-Cyclodextrin, Naphthalene, Room temperature phosphorescence

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DU Xin-Zhen, ZHANG Yong, HUANG Xian-Zhi, LI Yao-Qun, JIANG Yun-Bao, CHEN Guo-Zhen. β-Cyclodextrin Induced Room Temperature Phosphorescence From 1-Bromonaphthalene in the Presence of Naphthalene and 1-Butanol[J]. Chem. J. Chinese Universities, 1996, 17(3): 381.

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β-Cyclodextrin Induced Room Temperature Phosphorescence From 1-Bromonaphthalene in the Presence of Naphthalene and 1-Butanol

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