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第 35 卷第 7 期 精 细 化 工 Vol.35, No.7
201 8 年 7 月 FINE CHEMICALS July 2018
功能材料
三元有机-钴大环化合物的组装及其识别性能
*
吴红梅,郭 宇 ,曹建芳,陈强强
(辽宁工业大学 化学与环境工程学院,辽宁 锦州 121001)
摘要:以 5-氨基-1,3-苯二甲酸为母体,通过系列衍生引入苄基和喹啉基团合成配体 HL〔5-N, N-二苄基氨基-N, N-
双(2-喹啉亚甲基)-1,3-苯二甲酰肼〕,其与钴离子自组装构筑了有机-钴三元大环化合物 HL-Co。利用电喷雾质
谱和紫外光谱考察了 HL-Co 对谷胱甘肽的识别过程与传感作用。结果表明,HL-Co 在溶液中可形成稳定的[3+3]
大环结构,并且能够以物质的量比 1∶1 包合谷胱甘肽分子。通过紫外滴定测试发现,当向 HL-Co 中加入谷胱
甘肽后,在 320 nm 处的吸光度逐渐增加,而 425 nm 处吸光度逐渐减弱,直至平衡,等吸收点为 357 nm。而且,
采用 Benesi-Hildebrand 数据拟合得到平衡常数 lgK(GSH)=4.41,对谷胱甘肽识别的最低检测限达到 1.0×
–5
10 mol/L,实现了对谷胱甘肽的有效识别。
关键词:谷胱甘肽;有机-钴大环化合物;紫外光谱;识别;功能材料
中图分类号:O433.5 文献标识码:A 文章编号:1003-5214 (2018) 07-1149-07
Assembly of Co-based Organic-metal Cyclohelicate Compound
for Recognition of Glutathione
*
WU Hong-mei, GUO Yu , CAO Jian-fang, CHEN Qiang-qiang
(School of Chemical and Environmental Engineering, Liaoning University of Technology, Jinzhou 121001, Liaoning,
China)
Abstract: A novel organic-cobalt ternary macrocyclic compound HL-Co was constructed by cobalt ion with
1
3
5-N,N-dibenzylamino-N ,N -bis(quinolin-2-ylmethylene) isophthalohydrazide, which was synthesized by
introduction of quinoline and dansylamide groups into 5-aminoisophthalic acid. The recognition process
and sensing effect of glutathione (GSH) were studied with HL-Co by electrospray ionization mass
spectrometry (ESI-MS) and ultraviolet spectroscopy (UV-vis). The results showed that HL-Co formed a
stable [3+3] macrocyclic structure in solution and could encapsulate glutathione at a molar ratio of 1∶1.
The absorbance at 320 nm was gradually increased when glutathione was added into the solution of HL-Co,
while the absorbance at 425 nm gradually decreased until the equilibrium. The isosbestic point occurred at a
wavelength of 357 nm. The equilibrium constant, lgK(GSH)=4.41, was calculated by using Benesi-
–5
Hildebrand plot. The minimum detection limit of glutathione was 1.0×10 mol/L, which indicated that
HL-Co had good recognition of glutathione.
Key words: glutathione; organic-cobalt macrocyclic compound; UV-vis spectrum; recognition; functional
materials
Foundation items: National Natural Science Foundation of China (21601075,21606118); Natural Science
Foundation of Liaoning Province (2015020249)
谷胱甘肽(GSH)是内源性非蛋白类生物巯基 自由基的解毒作用;维持正常的细胞生长、生物合
化合物,由 L-半胱氨酸、甘氨酸和谷氨酸组成,存 成 DNA 和细胞内的氧化还原平衡、促进铁质吸收;
在于所有生物体内(浓度范围:0.5~10.0 mmol/L)。 参与氨基酸的转运和吸收等 [1-3] 。事实表明,众多疾
其具有重要的生理功能,如:对铅、汞等重金属和 病的发生与谷胱甘肽的含量有关,如艾滋病、糖尿
收稿日期:2017-11-27; 定用日期:2018-02-12; DOI: 10.13550/j.jxhg.20170965
基金项目:国家自然科学基金(21601075,21606118);辽宁省自然科学基金(2015020249)
作者简介:吴红梅(1979—),女,副教授。联系人:郭 宇(1981—),男,教授,电话:0416-4199013,E-mail:guoyulnut@163.com。