Host-guest interactions of 8-aniline-1-naphthalene sulfonic acid with two macrocycles containing 2,6-pyridylamide and dipyrrole units

IF 1.7 4区化学 Q3 Chemistry

Journal of Chemical Sciences Pub Date : 2022-08-25 DOI:10.1007/s12039-022-02085-7

Rui Yi, Hongjuan Liu, Ying Xiong, Dongmei Chen, Chao Huang, Bixue Zhu

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引用次数: 0

Abstract

The host-guest interactions of two macrocycles L₁ and L₂ with 8-aniline-1-naphthalene sulfonic acid (1,8-ANS) were evaluated by fluorescence emission spectra. It was found that 1,8-ANS had a quenching effect upon the addition of the two macrocycles, which contain both 2,6-pyridylamide and dipyrrole units, and the corresponding binding ratios were also obtained. Furthermore, the binding behavior was investigated by H NMR titration. The results show that both the binding ratios of L₁ and L₂ with 1,8-ANS molecule are 1:1, and the stability constants are 3.06×10⁴ L·mol^-1 and 6.58×10³ L·mol^-1, respectively.

Graphical abstract

The host-guest interactions of macrocycles L₁ and L₂ with 8-aniline-1-naphthalene sulfonic acid were evaluated by fluorescence spectra and H NMR titration. The binding ratios of L₁ and L₂ with the compound are both 1:1, and the stability constants are 3.06×10⁴ L·mol^-1 and 6.58×10³ L·mol^-1.

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8-苯胺-1-萘磺酸与两个含有2,6-吡啶酰胺和二吡咯单位的大环的主客体相互作用

利用荧光发射光谱研究了两个大环L1和L2与8-苯胺-1-萘磺酸(1,8- ans)的主客体相互作用。发现1,8- ans对同时含有2,6-吡啶酰胺和二吡咯单元的两个大环的加入有猝灭作用，并得到了相应的结合比。并用氢核磁共振滴定法研究了其结合行为。结果表明，L1和L2与1,8- ans分子的结合比均为1:1，稳定常数分别为3.06×104 L·mol-1和6.58×103 L·mol-1。摘要用荧光光谱和核磁共振滴定法研究了大环L1和L2与8-苯胺-1-萘磺酸的主客体相互作用。L1和L2与化合物的结合比均为1:1，稳定常数分别为3.06×104 L·mol-1和6.58×103 L·mol-1。

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来源期刊

Journal of Chemical Sciences Chemistry-General Chemistry

CiteScore

2.90

自引率

5.90%

发文量

107

审稿时长

12 months

期刊介绍： Journal of Chemical Sciences is a monthly journal published by the Indian Academy of Sciences. It formed part of the original Proceedings of the Indian Academy of Sciences – Part A, started by the Nobel Laureate Prof C V Raman in 1934, that was split in 1978 into three separate journals. It was renamed as Journal of Chemical Sciences in 2004. The journal publishes original research articles and rapid communications, covering all areas of chemical sciences. A significant feature of the journal is its special issues, brought out from time to time, devoted to conference symposia/proceedings in frontier areas of the subject, held not only in India but also in other countries.