Pillar[5]arene-based supramolecular AIE hydrogel with white light emission for ultrasensitive detection and effective separation of multianalytes,Polymer Chemistry

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Pillar[5]arene-based supramolecular AIE hydrogel with white light emission for ultrasensitive detection and effective separation of multianalytes
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020-07-15 , DOI: 10.1039/d0py00872a
Qi Zhao _{1,

2,

3,

4,

5} , Guan-Fei Gong _{1,

2,

3,

4,

5} , Hai-Long Yang _{1,

2,

3,

4,

5} , Qin-Peng Zhang _{1,

2,

3,

4,

5} , Hong Yao _{1,

2,

3,

4,

5} , You-Ming Zhang _{1,

2,

3,

4,

5} , Qi Lin _{1,

2,

3,

4,

5} , Wen-Juan Qu _{1,

2,

3,

4,

5} , Tai-Bao Wei _{1,

2,

3,

4,

5}

Affiliation

Light-emitting materials are of significant interest because of their vast potential applications in electroluminescent devices/displays and sensors. Herein, a novel bi-component supramolecular aggregation-induced emission (AIE) hydrogel (PDG) was successfully prepared with p-hydroxybenzonic acid-functionalized pillar[5]arene (SPA) and tri-(pyridine-4-yl)-functionalized trimesic amide (DTB) by a simple host–guest assembly process. The most attractive feature of PDG is its practical white-light-emitting property, which can be used for ultrasensitive detection and separation of Pb²⁺, Cr³⁺, and Fe³⁺ ions. The limits of lowest detection (LODs) of PDG for Pb²⁺, Cr³⁺, and Fe³⁺ are approximately 6.74 × 10⁻⁹, 7.18 × 10⁻⁹, and 8.25 × 10⁻⁹ M, respectively. Strikingly, by rationally introducing these metal ions into the PDG, a series of metal-ion-coordinated supramolecular metallogels PDG-Cr and PDG-Fe was constructed, and these metallogels can selectively detect CN⁻ and H₂PO₄⁻, respectively. The LODs of PDG-Cr and PDG-Fe for CN⁻ and H₂PO₄⁻ reached up to 10⁻⁸ M. The prepared PDG-based thin films can act as a smart fluorescent display material and test kit. The xerogel of PDG can adsorb and separate Pb²⁺, Cr³⁺, and Fe³⁺ from aqueous solution, with adsorption rates ranging from 96.73% to 98.95%.

中文翻译：

发射白色光的基于柱[5]芳烃的超分子AIE水凝胶，用于超灵敏检测和有效分离多种分析物

发光材料由于在电致发光器件/显示器和传感器中具有巨大的潜在应用而备受关注。本文成功地用对羟基苯甲酸官能化的支柱[5]芳烃（SPA）和三（吡啶-4-基）官能化的均苯三甲酸酯成功制备了新型的双组分超分子聚集诱导发射（AIE）水凝胶（PDG）。通过简单的宾客组装过程得到酰胺（DTB）。PDG最吸引人的特点是其实用的白光发射特性，可用于超灵敏的检测和分离Pb 2 ⁺，Cr ³⁺和Fe ³⁺离子。的最低检测（检测限）的限制PDG对Pb ²⁺，铬³⁺和Fe ³⁺是约6.74×10 ^-9，7.18×10 ^-9和8.25×10 ^-9分别男，。引人注目的是，通过合理引入这些金属离子到PDG，一系列的金属离子配位的超分子metallogels PDG铬和PDG-铁构建，并且这些metallogels可以选择性地检测CN ^-和H ₂ PO ₄^-，分别。的检测限PDG-铬和PDG-铁的CN ^-和H ₂ PO ₄^-最多时达到10 ^-8 M的制备PDG为基础的薄膜可为智能荧光显示材料和测试试剂盒起作用。PDG的干凝胶可以从水溶液中吸附和分离Pb 2 ⁺，Cr ³⁺和Fe ³⁺，吸附率为96.73％至98.95％。

更新日期：2020-09-01

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