Tuerdi Gulimire, Yimit Abliz, Zhang Xiaoyan
School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi, 830046, China.
Anal Sci. 2022 Jun;38(6):833-842. doi: 10.1007/s44211-022-00103-9. Epub 2022 Mar 25.
We developed optical waveguide (OWG), ultraviolet-visible spectrophotometry (UV-vis), and electrically operated gas sensors utilizing zinc-tetra-phenyl-porphyrin (ZnTPP) as sensitizer. Strikingly, ZnTPP thin-film/K-exchanged glass OWG sensing element exhibits a superior signal-to-noise ratio of 109.6 upon 1 ppm NO gas injection, which is 29.5 and 3.8 times larger than that of UV-vis (absorbance at wavelength of 438 nm) and ZnTPP electrical sensing elements prepared on an alumina ceramic tube, respectively. Further results on Fourier infrared spectra and UV-vis spectra, confirm a strong chemical adsorption of NO gas on ZnTPP. Therefore, our studies highlight the selection of suitable detection technique for analyte sensing with ZnTPP.
我们开发了利用四苯基卟啉锌（ZnTPP）作为敏化剂的光波导（OWG）、紫外可见分光光度法（UV-vis）和电动气体传感器。引人注目的是，ZnTPP薄膜/K交换玻璃OWG传感元件在注入1 ppm NO气体时表现出109.6的优异信噪比，分别比紫外可见分光光度法（波长438 nm处的吸光度）和在氧化铝陶瓷管上制备的ZnTPP电传感元件大29.5倍和3.8倍。傅里叶红外光谱和紫外可见光谱的进一步结果证实了NO气体在ZnTPP上的强烈化学吸附。因此，我们的研究突出了为使用ZnTPP进行分析物传感选择合适检测技术的重要性。
