材料科学
氮化碳
电化学发光
结晶
氮化物
基质(水族馆)
光电子学
碳纤维
纳米技术
色谱法
有机化学
图层(电子)
化学
催化作用
复合材料
地质学
检出限
海洋学
复合数
光催化
作者
Yuhua Hou,Yanfeng Fang,Zhixin Zhou,Hong Qing,Wang Li,Hong Yang,Kaiqing Wu,Yuan Xu,Xuwen Cao,Dan Han,Songqin Liu,Yanfei Shen,Yuanjian Zhang
标识
DOI:10.1002/adom.202202737
摘要
Abstract Electrochemically generated chemiluminescence (ECL) has attracted significant interest over the past decades, ranging from fundamental studies on highly efficient electron‐to‐photon interconversion to practical bioassays. Nonetheless, the ECL efficiency (Φ ECL ) of most emitters is low, which significantly hampers further development. Herein, this work reports a highly robust carbon nitride film with unusually enhanced ECL efficiency (2256 times higher than that of the reference Ru(bpy) 3 Cl 2 /K 2 S 2 O 8 ). Double crystallization, which provides the primary interaction of carbon nitride with the substrate and subsequent growth, plays a crucial role in the preparation. The improved ECL efficiency is ascribed to little pinholes suppressing futile co‐reagent reduction, maintenance of more orbit‐delocalized heptazine subunits improving ECL kinetics, and high transparency avoiding self‐absorption. As a potential application, an ultrasensitive visual DNA biosensor by the naked eye is further successfully developed with a linear detection range of 100 p m to 1 µ m and limit of detection of 27 p m ( S / N = 3).
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