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Electrospun nanofibrous sheet doped with a novel triphenylamine based salicylaldehyde fluorophore for hydrazine vapor detection
Journal of Photochemistry and Photobiology A: Chemistry ( IF 4.3 ) Pub Date : 2020-09-06 , DOI: 10.1016/j.jphotochem.2020.112879
Apisit Karawek , Pipattra Mayurachayakul , Thanapich Santiwat , Mongkol Sukwattanasinitt , Nakorn Niamnont

Successful synthesis of a novel triphenylamine based salicylaldehyde fluorophore (compound 1) was performed via Suzuki cross-coupling reaction. Subsequently, the identification the hydrazine vapor of an electrospun nanofiber sheet combined with compound 1 depending on solid condition was described. Furthermore, cellulose acetate (CA) combined with the electrospun nanofiber sheet based on compound 1 was formed by applying the electrospinning technique where the average diameter was 324.6 ± 91.6 nm. The sensing nanofiber sheet exhibited a sensitive and selective reaction to hydrazine vapor with a linear concentration range of 0.2-1 %w/v in aqueous solution according to the analysis of fluorescence images using ImageJ. Moreover, it exhibited the elevated selectivity with hydrazine across 21 convenient interferences. Initial findings revealed the nanofibrous mat’s sensitivity and selectivity in terms of the identification of hydrazine via naked-eye detection under backlight 365 nm with fluorescent turn-off mode. Additionally, the generation of compound 1 and the hydrazone product (compound 1-HZ) was investigated through the use of 1H-NMR titration and HRMS, which affirmed the formation of hydrazine with a proton chemical shift at 7.95 ppm, HRMS of compound 1-HZ at m/z = 380.1764 [1-HZ+H]+). It has been demonstrated that the nanofibrous mat offers a basic and suitable method for detecting water vapour in water environments as well as industrial chemical setting.



中文翻译:

掺杂新型三苯胺基水杨醛荧光团的静电纺纳米纤维片用于肼蒸气检测

通过铃木交叉偶联反应成功合成了新型的基于三苯胺的水杨醛荧光基团(化合物1)。随后,描述了根据固体条件鉴定与化合物1结合的电纺纳米纤维片的肼蒸气。此外,醋酸纤维素(CA)与基于化合物1的电纺纳米纤维片结合通过使用电纺丝技术形成平均直径为324.6±91.6 nm的涂层。根据使用ImageJ的荧光图像分析,感测纳米纤维片对水溶液中线性浓度范围为0.2-1%w / v的肼蒸气表现出敏感和选择性的反应。此外,它在21种便利干扰中均表现出与肼相比更高的选择性。最初的发现揭示了纳米纤维垫在通过荧光关闭模式在365 nm背光下通过肉眼检测可识别肼的敏感性和选择性。此外,还通过使用1研究了化合物1和the产物(化合物1-HZ)的生成H-NMR滴定和HRMS证实形成了质子化学位移为7.95 ppm的肼,化合物1-HZ的HRMS在m / z = 380.1764 [ 1-HZ + H] +)。已经证明,纳米纤维垫提供了用于检测水环境中的水蒸气以及工业化学设置的基本且合适的方法。

更新日期:2020-09-12
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