A bis-naphthalimide functionalized pillar[5]arene-based supramolecular π-gel acts as a multi-stimuli-responsive material†,New Journal of Chemistry

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A bis-naphthalimide functionalized pillar[5]arene-based supramolecular π-gel acts as a multi-stimuli-responsive material†
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-08-28 00:00:00 , DOI: 10.1039/c8nj03583k
You-Ming Zhang _{1,

2,

3,

4,

5} , Yong-Fu Li _{1,

2,

3,

4,

5} , Kai-Peng Zhong _{1,

2,

3,

4,

5} , Wen-Juan Qu _{1,

2,

3,

4,

5} , Hong Yao _{1,

2,

3,

4,

5} , Tai-Bao Wei _{1,

2,

3,

4,

5} , Qi Lin _{1,

2,

3,

4,

5}

Affiliation

In this work, a novel supramolecular π-gel has been constructed using a naphthalimide functionalized pillar[5]arene-based gelator (MP5). The gelator MP5 simultaneously contains a naphthalimide moiety as the π⋯π interaction site as well as a fluorophore. Interestingly, the MP5-based supramolecular π-gel (MP5-G) exhibits strong aggregation-induced emission (AIE). MP5-G exhibited good thermal-responsiveness, acid and base-responsiveness and cation and amino acid-responsiveness. Meanwhile, this supramolecular π-gel also shows selective fluorescence sensing for Fe³⁺via cation–π interactions with high selectivity and sensitivity, and the detection limit of MP5-G for Fe³⁺ is 6.06 × 10⁻⁸ M. Even more meaningfully, MP5-G could remove Fe³⁺ from water solution with excellent recyclability and ingestion capacity, and the Fe³⁺ removal rate can reach up to 99.8%. Furthermore, the Fe³⁺ coordinated supramolecular gel, MP5-FeG, shows selective fluorescence “turn-on” sensing for L-Cys. The detection limit of MP5-FeG for L-Cys is 1.0 × 10⁻⁸ M. Simultaneously, thin films based on these supramolecular gels were prepared, which were confirmed to be convenient test kits for detecting Fe³⁺ and L-Cys. In addition, these supramolecular π-gels could be used as sensitive ion sensors, sensitive logic gates and fluorescent display materials.

中文翻译：

双萘二甲酰亚胺官能化的柱子[5]基于芳烃的超分子π-凝胶充当多重刺激响应材料†

在这项工作中，使用萘酰亚胺功能化的基于柱[5]芳烃的胶凝剂（MP5）构建了一种新型的超分子π凝胶。胶凝剂MP5同时包含萘二甲酰亚胺部分作为π⋯π相互作用位点以及荧光团。有趣的是，基于MP5的超分子π凝胶（MP5-G）表现出强的聚集诱导发射（AIE）。MP5-G表现出良好的热响应性，酸和碱响应性以及阳离子和氨基酸响应性。同时，这种超分子π-凝胶还显示出通过阳离子-π相互作用对Fe ^3+的选择性荧光传感，具有很高的选择性和灵敏度，并且对MP5-G的检测限Fe ⁵⁺的Fe ³⁺为6.06×10 ^-8M。更有意义的是，MP5-G可以从水溶液中去除Fe ³⁺，具有极好的可回收性和吸收能力，Fe ^3+的去除率可以达到99.8％。此外，Fe ³⁺配位的超分子凝胶MP5-FeG对L -Cys表现出选择性的荧光“开启”感测。的检测极限MP5-FEG为大号-Cys为1.0×10 ^-8 M.同时，制备基于这些超分子的凝胶薄膜，其被证实为方便检测试剂盒，用于检测的Fe ³⁺和L- Cys。另外，这些超分子π-凝胶可用作敏感的离子传感器，敏感的逻辑门和荧光显示材料。

更新日期：2018-08-28

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