A novel fused bi-macrocyclic host for sensitive detection of Cr2O72-based on enrichment effect

Ting-Ting Huang ¹Jin-Fa Chen ¹Juan Liu ²Tai-Bao Wei ¹Hong Yao ¹Bingbing Shi ¹Qi Lin¹

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作者信息

1. Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education,Key Laboratory of Eco-environmental Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China
2. Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission,Gansu Provincial Biomass Function Composites Engineering Research Center,College of Chemical Engineering,Northwest Minzu University(Northwest University for Nationalities),Lanzhou 730000,China
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Abstract

Improving the highly selective and sensitive binding of chemosensor to target guest is always very chal-lenging.In order to solve this issue,herein,the enrichment effect was introduced into the design of chemosensor molecule.A novel bi-fused-macrocyclic host molecule BPN1 was synthesized by bridging a pillar[5]arene and a naphthalene diimide(NDI)group through hydrogen-bond-rich chain.In the BPN1,the naphthalimide side ring is outside the cavity of the pillar[5]arene.In addition,Cr(Ⅵ)greatly threat human health and the environment due to its severe toxicity,and it is very important to develop effec-tive chemosensor for sensitive and selective detection of Cr2O72-or its ion pairs.In this paper,the novel bi-fused-macrocyclic host molecule BPN1 can recognize Cr2O72-with high selectivity and sensitivity.The mechanism of BPN1 recognition of Cr2O72-was studied through experiments and density functional the-ory(DFT),the results show that BPN1 could supply enrichment effect to bind Cr2O72-through multiple weak interactions such as hydrogen bonds and anion-π,and achieve highly sensitive and selective detec-tion of Cr2O72-.It is a significant and feasible strategy for improve high selectivity and sensitivity of host to specific objects by using the enrichment effect of fused bi-macrocyclic.

Key words

Pillar[5]arene/Bi-macrocyclic/Detection of Cr2O72-/DFT/The enrichment effect

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基金项目

National Natural Science Foundation of China(NSFC)(22065031)

National Natural Science Foundation of China(NSFC)(22061039)

National Natural Science Foundation of China(NSFC)(22001214)

National Natural Science Foundation of China(NSFC)(22165027)

topnotch talent project in Gansu province,the Key R&D Program of Gansu Province(21YF5GA066)

Gansu Province College Industry Support Plan Project(2022CYZC-18)

Natural Science Foundation of Gansu Province(2020-0405-JCC-630)

Natural Science Foundation of Gansu Province(20JR10RA088)

star of innovation(2023CXZX-244)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量61

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