R6G-AAO双峰发射器的能量传递与Fe(III)/Cr(VI)的探测

Energy transfer of R6G-AAO dual-emitting sensor and detection of Fe(III)/Cr(VI)

设计了一种由罗丹明6G(Rhodamine 6G,R6G)和阳极氧化铝(anodised aluminium,AAO)组成的双发射固态探测器(R6G-AAO,RA),通过稳态/瞬态荧光光谱详细探究了R6G与AAO之间的能量传递过程。由于其具有双峰发射,因此,存在自校正效应,可以避免环境因素对探测结果的影响。此外,这种光致发光探测器能够用于检测金属Fe(III)和Cr(VI)两种离子。结果表明,当用RA对Fe(III)进行检测时,检出限较高且具有可重复使用性;用于Cr(VI)检测时,能量传递过程被破坏,其两个发射峰的变化比例不同,展现出了双峰探测器的自校正效应。还进一步阐述了探测器对Fe(III)和Cr(VI)的检测机制。

Rhodamine 6G(R6G)and anodic aluminum oxide(AAO)were composed to designed a dual-emitting solid-state sensor(R6G-AAO,RA).The energy transfer process between R6G and AAO was investigated in detail by steady-state/transient fluorescence spectroscopy.Due to its dual-emitting,there is a self-correction effect that can avoid the influence of environmental factors on the detection results.In addition,this photoluminescence detector can be used to detect two types of metallic Fe(III)and Cr(VI)ions.The results indicate that when RA was used to detect Fe(III),the detection limit is high with reusability.For Cr(VI)detection,the energy transfer process is disrupted,and the changing ratios of the two emission peaks are different,exhibiting the self-correction effect of the dual-emitting sensor.The detection mechanisms of the sensor for Fe(III)and Cr(VI)were further illustrated.