Xu Kun, Kuang Xuan, Zhang Nuo, Xu Rui, Liu Xuejing, Wei Qin
Key Laboratory of Interfacial Reaction & Sensing Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, PR China.
Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, 215163, People's Republic of China.
Mikrochim Acta. 2024 Jul 24;191(8):480. doi: 10.1007/s00604-024-06540-9.
An original molecular imprinting photoelectrochemical (PEC) sensor for sarcosine detection based on stable lead-free inorganic halide double perovskite CsAgBiBr is proposed. CsAgBiBr as a lead-free halide perovskite material possesses several positive optoelectronic properties for PEC analysis, such as long-lived component to the charge-carrier lifetime, and strong absorption of visible light. At the same time, two-dimensional materials also offer excellent electronic and mechanical properties; thus, BiOS was used and combined with CsAgBiBr to provide a stable and large photocurrent, which also benefits from the stability of perovskite CsAgBiBr. Based on this novel PEC assay, the detection range for sarcosine was between 0.005 and 5000 ng/mL with a low detection limit of 0.002 ng/mL. This work also improved the adhibition of metal halide perovskite in analytical chemistry field, providing a novel way for other small molecule detection.
提出了一种基于稳定的无铅无机卤化物双钙钛矿CsAgBiBr的用于肌氨酸检测的新型分子印迹光电化学（PEC）传感器。CsAgBiBr作为一种无铅卤化物钙钛矿材料，具有若干对PEC分析有利的光电特性，如电荷载流子寿命的长寿命成分以及对可见光的强吸收。同时，二维材料也具有优异的电子和机械性能；因此，使用BiOS并与CsAgBiBr结合以提供稳定且大的光电流，这也得益于钙钛矿CsAgBiBr的稳定性。基于这种新型PEC检测方法，肌氨酸的检测范围为0.005至5000 ng/mL，检测下限低至0.002 ng/mL。这项工作还改善了金属卤化物钙钛矿在分析化学领域的应用，为其他小分子检测提供了一种新方法。
