Fluorescent conjugated mesoporous polymers with N,N-diethylpropylamine for the efficient capture and real-time detection of volatile iodine†,Journal of Materials Chemistry A

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Fluorescent conjugated mesoporous polymers with N,N-diethylpropylamine for the efficient capture and real-time detection of volatile iodine†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020-01-06 , DOI: 10.1039/c9ta11446g
Meiyun Xu _{1,

2,

3,

4,

5} , Tao Wang _{1,

2,

3,

4,

5} , Lei Zhou _{1,

2,

3,

4,

5} , Daoben Hua _{1,

2,

3,

4,

5}

Affiliation

Iodine radioisotopes, one of the major fission products in the nuclear industry, will cause widespread pollution due to their volatility when their inadvertent environmental release occurs. In this paper, a strategy for the efficient capture and real-time detection of iodine by amine-functionalized fluorescent conjugated mesoporous polymers (CMPs) is developed. CMPs are built up through a rigid skeleton and different flexible binding sites for iodine by the Sonogashira–Hagihara coupling reaction. Among them, CMP with N,N-diethylpropylamine (CMPN) shows outstanding capture ability for iodine vapor and dissolved iodine and also exhibits excellent stability against β- or γ-ray irradiation. Moreover, owing to the fluorescence quenching amplification of the conjugation skeleton, a CMPN-coated test paper enables highly sensitive detection of iodine even at 4 °C with a low vapor pressure of 16.8 Pa. To the best of our knowledge, CMPN with flexible and rigid binding sites gives the highest uptake values for iodine among all CMP-based materials reported to date, and it is the first functional material exhibiting the simultaneous adsorption and field detection of iodine vapor.

中文翻译：

带有N，N-二乙基丙胺的荧光共轭介孔聚合物，可有效捕获和实时检测挥发性碘†

碘放射性同位素是核工业的主要裂变产物之一，当其无意中释放出环境时，由于其挥发性而将引起广泛的污染。本文提出了一种通过胺官能化的荧光共轭介孔聚合物（CMP）有效捕获和实时检测碘的策略。CMP通过Sonogashira-Hagihara偶联反应通过一个刚性骨架和不同的柔性碘结合位点建立。其中，CMP的N，N-二乙丙胺（CMPN）对碘蒸气和溶解的碘具有出色的捕获能力，并且对β射线或γ射线照射也具有出色的稳定性。此外，由于共轭骨架的荧光猝灭放大作用，即使在4°C且蒸气压为16.8 Pa的情况下，CMPN涂层试纸也能实现高灵敏度的碘检测。迄今为止，刚性结合位点在所有基于CMP的材料中提供了最高的碘吸收值，并且它是首个同时吸附和现场检测碘蒸气的功能材料。

更新日期：2020-01-06

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