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Fabricating Covalent–Organic Quantum Dots through Selective Disassembly of Hydrogen-Covalent Hybridized Organic Frameworks for Efficient and Sensitive Uranium Detection
ACS Materials Letters ( IF 9.6 ) Pub Date : 2024-03-06 , DOI: 10.1021/acsmaterialslett.3c01401
Zhimin Jia 1 , Xiaofeng Li 2 , Lei Su 3 , Yang Li 1 , Jie Zhang 1 , Yingdi Zou 1 , Ziqian Han 1 , Ningning He 1 , Feng Zhao 3, 4 , Lijian Ma 1
ACS Materials Letters ( IF 9.6 ) Pub Date : 2024-03-06 , DOI: 10.1021/acsmaterialslett.3c01401
Zhimin Jia 1 , Xiaofeng Li 2 , Lei Su 3 , Yang Li 1 , Jie Zhang 1 , Yingdi Zou 1 , Ziqian Han 1 , Ningning He 1 , Feng Zhao 3, 4 , Lijian Ma 1
Affiliation
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The preparation of low-dimensional covalent–organic frameworks (COFs) is currently a hot and challenging research topic, especially for zero-dimensional (0D) COF quantum dots (COQDs). Herein, for the first time we introduce a facile and efficient approach to fabricating COQDs by selectively disassembling hydrogen-covalent hybridized organic frameworks (H–COFs). By taking advantage of the disparate stabilities between noncovalent and covalent bonds within the periodic lamellar structures of H–COFs, we disrupt the hydrogen bonds through ultrasonic treatment, resulting in the decomposition of H–COFs into COQDs with abundant functional groups, uniform size, high yield, and good stability. Notably, the as-prepared COQD-1 exhibits excellent fluorescence properties, enabling its application in the detection of low-concentration UO22+ with high sensitivity, high selectivity, and good visuality. This study not only presents a novel strategy for preparing COQDs but also highlights their potential in fluorescence-based metal ion detection.
中文翻译：
通过选择性分解氢共价杂化有机框架制造共价有机量子点，用于高效、灵敏的铀检测
低维共价有机框架（COF）的制备是目前一个热门且具有挑战性的研究课题，特别是零维（0D）COF量子点（COQD）。在此，我们首次介绍了一种通过选择性拆卸氢共价杂化有机框架（H-COF）来制造COQD的简便有效的方法。利用H-COFs周期性层状结构中非共价键和共价键之间不同的稳定性，我们通过超声波处理破坏氢键，从而将H-COFs分解成具有丰富官能团、尺寸均匀、高活性的COQDs。产量高，稳定性好。值得注意的是，所制备的COQD-1表现出优异的荧光特性，使其能够以高灵敏度、高选择性和良好的可视性应用于低浓度UO 2 2+的检测。这项研究不仅提出了一种制备 COQD 的新策略，而且还强调了它们在基于荧光的金属离子检测中的潜力。
更新日期：2024-03-06
中文翻译：
通过选择性分解氢共价杂化有机框架制造共价有机量子点，用于高效、灵敏的铀检测
低维共价有机框架（COF）的制备是目前一个热门且具有挑战性的研究课题，特别是零维（0D）COF量子点（COQD）。在此，我们首次介绍了一种通过选择性拆卸氢共价杂化有机框架（H-COF）来制造COQD的简便有效的方法。利用H-COFs周期性层状结构中非共价键和共价键之间不同的稳定性，我们通过超声波处理破坏氢键，从而将H-COFs分解成具有丰富官能团、尺寸均匀、高活性的COQDs。产量高，稳定性好。值得注意的是，所制备的COQD-1表现出优异的荧光特性，使其能够以高灵敏度、高选择性和良好的可视性应用于低浓度UO 2 2+的检测。这项研究不仅提出了一种制备 COQD 的新策略，而且还强调了它们在基于荧光的金属离子检测中的潜力。
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