Valeria B. López-Cervantes, Marco L. Martínez, Juan L. Obeso, Celene García-Carvajal, Nora S. Portillo-Vélez, Ariel Guzmán-Vargas, Ricardo A. Peralta, Eduardo González-Zamora, Ilich A. Ibarra, Diego Solis-Ibarra, John Luke Woodliffe and Yoarhy A. Amador-Sánchez
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引用次数: 0
Abstract
In this study, the potential of the metal–organic framework UTSA-16(Zn) as a fluorescence detector for SO2 is explored. The material was synthesized and characterized by powder X-ray diffraction (PXRD), infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and its fluorescence behavior was analyzed before and after SO2 exposure. A significant decrease in fluorescence intensity was observed and a LOD of 1.79 mM (∼114.6 ppm) was obtained. With the help of time-resolved photoluminescence (TRPL) experiments and X-ray photoelectron (XPS) and ultraviolet-visible (UV-vis) spectroscopy, a static quenching mechanism due to the formation of a non-fluorescent complex in the ground state (GSC) was elucidated.
本研究探讨了金属有机骨架UTSA-16（Zn）作为so2荧光探测器的潜力。合成了材料，采用粉末x射线衍射（PXRD）、红外光谱（FTIR）和热重分析（TGA）对材料进行了表征，并对其暴露于SO2前后的荧光行为进行了分析。观察到荧光强度显著降低，LOD为1.79 mM （~114.6 ppm）。借助时间分辨光致发光（TRPL）实验、x射线光电子（XPS）和紫外-可见（UV-vis）光谱，阐明了基态（GSC）下非荧光配合物形成的静态猝灭机制。
期刊介绍：
Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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