A Microporous Hydrogen-Bonded Organic Framework for Highly Efficient Turn-Up Fluorescent Sensing of Aniline,Journal of the American Chemical Society

当前位置： X-MOL 学术 › J. Am. Chem. Soc. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A Microporous Hydrogen-Bonded Organic Framework for Highly Efficient Turn-Up Fluorescent Sensing of Aniline
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-06-18 , DOI: 10.1021/jacs.0c05277
Bin Wang _{1,

2} , Ru He _{2,

3} , Lin-Hua Xie ₄ , Zu-Jin Lin ₂ , Xin Zhang ₂ , Jing Wang ₂ , Hongliang Huang ₅ , Zhangjing Zhang ₁ , Kirk S Schanze ₂ , Jian Zhang ₆ , Shengchang Xiang ₁ , Banglin Chen ₂

Affiliation

A microporous three-dimensional (3D) hydrogen-bonded organic framework (HOF-20) has been constructed from an aro-matic-rich tetratopic carboxylic acid, 5-(2,6-bis(4-carboxyphenyl)pyridin-4-yl)isophthalic acid (H4BCPIA). The activated HOF-20a has a moderately high Brunauer-Emmett-Teller (BET) surface area of 1323 m2 g-1 and excellent stability in water and HCl aqueous solution. HOF-20 exhibits highly efficient turn-up fluorescent sensing of aniline in water with a detection limit of 2.24 μM and is selective towards aniline in the presence of aromatic interferents, owing to the hydrogen bonding and edge-to-face π-π stacking interactions between the HOF-20 host and the guest aniline molecules, as demonstrated in the sin-gle crystal x-ray structure of HOF-20aniline. Density functional theory (DFT) calculations further demonstrate that the recognition of aniline molecules by HOF-20 could restrict the rotation of the aromatic rings in H4BCPIA linkers, reducing the non-radiative decay pathways upon photoexcitation and subsequently enhancing the fluorescence intensity.

中文翻译：

用于苯胺高效开启荧光传感的微孔氢键有机框架

已从富含芳烃的四位羧酸 5-(2,6-双(4-羧基苯基)吡啶-4-基构建了微孔三维 (3D) 氢键有机骨架 (HOF-20) )间苯二甲酸(H4BCPIA)。活化的HOF-20a具有1323 m2 g-1的中等高Brunauer-Emmett-Teller (BET)表面积，并且在水和HCl水溶液中具有优异的稳定性。HOF-20 表现出对水中苯胺的高效开启荧光传感，检测限为 2.24 μM，并且由于氢键和边-面 π-π 堆积相互作用，在存在芳香族干扰物的情况下对苯胺具有选择性在 HOF-20 主体和客体苯胺分子之间，如 HOF-20苯胺的单晶 X 射线结构所示。

更新日期：2020-06-18

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11