Binding of dimethyl 2,3-naphthalenedicarboxylate with alpha-, beta- and gamma-cyclodextrins in aqueous solution

Alvariza C; Usero R; Mendicuti F

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Binding of dimethyl 2,3-naphthalenedicarboxylate with alpha-, beta- and gamma-cyclodextrins in aqueous solution

机译：2,3-萘二甲酸二甲酯与水溶液中的α-，β-和γ-环糊精的结合

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摘要

Fluorescence has been used to investigate the complexes of 2,3-dimethyl naphthalenedicarboxylate with naturally occurring alpha-, beta- and gamma-cyclodextrins. Emission spectra upon excitation of the naphthoate group show two peaks whose ratio of intensities R is the sensitive to the medium polarity. The change of R with cyclodextrin concentration and temperature allows us to obtain the stoichiometry, the formation constants and the changes of enthalpy and entropy upon inclusion. Complexes show 1:1 stoichiometry. R extrapolated at [CD] -> infinity and the analysis of quenching and polarization measurements, as well as, molecular mechanics calculations in the presence of water, permit us to explain the geometry of the complexes, the possible location of the guest in conformity with thermodynamics parameters and the forces responsible for the complexation. (C) 2006 Elsevier B. V. All rights reserved.

机译：荧光已被用于研究2，3-二甲基萘二甲酸酯与天然存在的α-，β-和γ-环糊精的配合物。激发萘甲酸酯基团的发射光谱显示出两个峰，其强度比R对介质极性敏感。 R随环糊精浓度和温度的变化使我们获得化学计量，形成常数以及包合时焓和熵的变化。配合物显示化学计量比为1：1。 R在[CD]->无穷大外推，并进行猝灭和极化测量分析，以及在水存在下的分子力学计算，使我们能够解释配合物的几何形状，符合以下条件的客体的可能位置热力学参数和负责络合的力。（C）2006 Elsevier B. V.保留所有权利。

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《Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy》 |2007年第2期|共10页
作者
Alvariza C; Usero R; Mendicuti F;
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正文语种 eng
中图分类分析化学;
关键词
cyclodextrins; inclusion complex; fluorescence; 2; 3-naphthalenedicarboxylate; 2; 3-dimethyl naphthoate; molecular mechanics; MOLECULAR-MECHANICS CALCULATIONS; INCLUSION COMPLEXES; STEADY-STATE; EXPERIMENTAL THERMODYNAMICS; DYNAMICS SIMULATIONS; EXCIMER FORMATION; CHAIN MOLECULES; ENERGY-TRANSFER; FLUORESCENCE; 2; 6-NAPHTHALENEDICARBOXYLATE;

机译：环糊精;包合物;荧光;2;3-萘二甲酸酯;2;3-二甲基萘甲酸;分子力学;分子力学计算;包合物;稳态;实验热力学;动力学模拟;实例形成;链状分子;荧光;2;6-萘二甲酸酯;

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1. Binding of dimethyl 2,3-naphthalenedicarboxylate with alpha-, beta- and gamma-cyclodextrins in aqueous solution [J] . Alvariza C, Usero R, Mendicuti F Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy . 2007,第2期

机译：2,3-萘二甲酸二甲酯与水溶液中的α-，β-和γ-环糊精的结合
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Binding of dimethyl 2,3-naphthalenedicarboxylate with alpha-, beta- and gamma-cyclodextrins in aqueous solution

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