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Aluminum(III)-Based Organic Nanofibrous Gels as an Aggregation-Induced Electrochemiluminescence Emitter Combined with a Rigid Triplex DNA Walker as a Signal Magnifier for Ultrasensitive DNA Assay
Analytical Chemistry ( IF 6.7 ) Pub Date : 2022-12-21 , DOI: 10.1021/acs.analchem.2c04824 Yue Zhang 1 , Jia-Hang Li 1 , Xiao-Long Zhang 1 , Hai-Jun Wang 1 , Ruo Yuan 1 , Ya-Qin Chai 1
Analytical Chemistry ( IF 6.7 ) Pub Date : 2022-12-21 , DOI: 10.1021/acs.analchem.2c04824 Yue Zhang 1 , Jia-Hang Li 1 , Xiao-Long Zhang 1 , Hai-Jun Wang 1 , Ruo Yuan 1 , Ya-Qin Chai 1
Affiliation
Due to effective tackling of the problems of aggregation-caused quenching of traditional ECL emitters, aggregation-induced electrochemiluminescence (AIECL) has emerged as a research hotspot in aqueous detection and sensing. However, the existing AIECL emitters still encounter the bottlenecks of low ECL efficiency, poor biocompatibility, and high cost. Herein, aluminum(III)-based organic nanofibrous gels (AOGs) are used as a novel AIECL emitter to construct a rapid and ultrasensitive sensing platform for the detection of Flu A virus biomarker DNA (fDNA) with the assistance of a high-speed and hyper-efficient signal magnifier, a rigid triplex DNA walker (T-DNA walker). The proposed AOGs with three-dimensional (3D) nanofiber morphology are assembled in one step within about 15 s by the ligand 2,2′:6′,2″-terpyridine-4′-carboxylic acid (TPY-COOH) and cheap metal ion Al3+, which demonstrates an efficient ECL response and outstanding biocompatibility. Impressively, on the basis of loop-mediated isothermal amplification-generated hydrogen ions (LAMP-H+), the target-induced pH-responsive rigid T-DNA walker overcomes the limitations of conventional single or duplex DNA walkers in walking trajectory and efficiency due to the entanglement and lodging of leg DNA, exhibiting high stability, controllability, and walking efficiency. Therefore, AOGs with excellent AIECL performance were combined with a CG-C+ T-DNA nanomachine with high walking efficiency and stability, and the proposed “on–off” ECL biosensor displayed a low detection limit down to 23 ag·μL–1 for target fDNA. Also, the strategy provided a useful platform for rapid and sensitive monitoring of biomolecules, considerably broadening its potential applications in luminescent molecular devices, clinical diagnosis, and sensing analysis.
中文翻译:
铝 (III) 基有机纳米纤维凝胶作为聚集诱导电化学发光发射器与刚性三重 DNA 步行器结合作为超灵敏 DNA 检测的信号放大器
由于有效解决了传统ECL发射体聚集引起的猝灭问题,聚集诱导电化学发光(AIECL)已成为水检测和传感领域的研究热点。然而,现有的AIECL发射器仍面临ECL效率低、生物相容性差、成本高等瓶颈。在此,基于铝 (III) 的有机纳米纤维凝胶 (AOG) 被用作新型 AIECL 发射体,构建了一个快速和超灵敏的传感平台,用于借助高速和快速检测甲型流感病毒生物标志物 DNA (fDNA)。超高效信号放大镜,刚性三重 DNA 步行器(T-DNA 步行器)。所提出的具有三维 (3D) 纳米纤维形态的 AOG 由配体 2,2':6' 在大约 15 秒内一步组装而成,3+,表现出高效的 ECL 响应和出色的生物相容性。令人印象深刻的是,在环介导的等温扩增产生的氢离子(LAMP-H +)的基础上,目标诱导的 pH 响应刚性 T-DNA 步行器克服了传统单或双链 DNA 步行器在步行轨迹和效率方面的局限性对腿部 DNA 的纠缠和寄宿,表现出高稳定性、可控性和行走效率。因此,将具有优异 AIECL 性能的 AOG 与具有高行走效率和稳定性的 CG-C + T-DNA 纳米机器相结合,所提出的“开-关”ECL 生物传感器显示出低至 23 ag·μL –1的低检测限对于目标 fDNA。此外,该策略为快速灵敏地监测生物分子提供了一个有用的平台,大大拓宽了其在发光分子器件、临床诊断和传感分析方面的潜在应用。
更新日期:2022-12-21
中文翻译:
铝 (III) 基有机纳米纤维凝胶作为聚集诱导电化学发光发射器与刚性三重 DNA 步行器结合作为超灵敏 DNA 检测的信号放大器
由于有效解决了传统ECL发射体聚集引起的猝灭问题,聚集诱导电化学发光(AIECL)已成为水检测和传感领域的研究热点。然而,现有的AIECL发射器仍面临ECL效率低、生物相容性差、成本高等瓶颈。在此,基于铝 (III) 的有机纳米纤维凝胶 (AOG) 被用作新型 AIECL 发射体,构建了一个快速和超灵敏的传感平台,用于借助高速和快速检测甲型流感病毒生物标志物 DNA (fDNA)。超高效信号放大镜,刚性三重 DNA 步行器(T-DNA 步行器)。所提出的具有三维 (3D) 纳米纤维形态的 AOG 由配体 2,2':6' 在大约 15 秒内一步组装而成,3+,表现出高效的 ECL 响应和出色的生物相容性。令人印象深刻的是,在环介导的等温扩增产生的氢离子(LAMP-H +)的基础上,目标诱导的 pH 响应刚性 T-DNA 步行器克服了传统单或双链 DNA 步行器在步行轨迹和效率方面的局限性对腿部 DNA 的纠缠和寄宿,表现出高稳定性、可控性和行走效率。因此,将具有优异 AIECL 性能的 AOG 与具有高行走效率和稳定性的 CG-C + T-DNA 纳米机器相结合,所提出的“开-关”ECL 生物传感器显示出低至 23 ag·μL –1的低检测限对于目标 fDNA。此外,该策略为快速灵敏地监测生物分子提供了一个有用的平台,大大拓宽了其在发光分子器件、临床诊断和传感分析方面的潜在应用。