Interpenetrated Binary Supramolecular Nanofibers for Sensitive Fluorescence Detection of Six Classes of Explosives,Analytical Chemistry

当前位置： X-MOL 学术 › Anal. Chem. › 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.)

Interpenetrated Binary Supramolecular Nanofibers for Sensitive Fluorescence Detection of Six Classes of Explosives
Analytical Chemistry ( IF 6.7 ) Pub Date : 2018-03-07 00:00:00 , DOI: 10.1021/acs.analchem.8b00556
Wei Xiong _{1,

2} , Qijian Zhu _{1,

2} , Yanjun Gong _{1,

2} , Chen Wang ₃ , Yanke Che _{1,

2} , Jincai Zhao _{1,

2}

Affiliation

In this work, we develop a sequential self-assembly approach to fabricate interpenetrated binary supramolecular nanofibers consisting of carbazole oligomer 1–cobalt(II) (1-Co²⁺) coordination nanofibers and oligomer 2 nanofibers for the sensitive detection of six classes of explosives. When exposed to peroxide explosives (e.g., H₂O₂), Co²⁺ in 1-Co²⁺ coordination nanofibers can be reduced to Co⁺ that can transfer an electron to the excited 2 nanofibers and thereby quench their fluorescence. On the other hand, when exposed to the other five classes of explosives, the excited 2 nanofibers can transfer an electron to explosives to quench their fluorescence. On the basis of the distinct fluorescence quenching mechanisms, six classes of explosives can be sensitively detected. Herein, we provide a new strategy to design broad-band fluorescence sensors for a rich identification of threats.

中文翻译：

互穿二元超分子纳米纤维用于六类炸药的灵敏荧光检测。

在这项工作中，我们开发了一种顺序自组装方法来制造由咔唑低聚物1-钴（II）（1 -Co ²⁺）配位纳米纤维和低聚物2纳米纤维组成的互穿二元超分子纳米纤维，用于灵敏地检测六类爆炸物。当暴露于过氧化物爆炸物（例如，H ₂ ö ₂），CO ^{2 +}在1 -Co ²⁺协调纳米纤维能够减少对Co ⁺能的电子转移到激发2纳米纤维，从而淬灭其荧光。另一方面，当激发的2种纳米纤维暴露于其他五类爆炸物时，可以将电子转移到爆炸物上以淬灭其荧光。根据不同的荧光猝灭机理，可以灵敏地检测出六类炸药。在此，我们提供了一种新的策略来设计宽带荧光传感器，以丰富地识别威胁。

更新日期：2018-03-07

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11