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243 results on '"Dou, Xincun"'

29. Solvation effect enabled visualized discrimination of multiple metal ionsElectronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d4ay00060a

Author

Cheng, Yang, Liu, Yuan, Li, Jiguang, Li, Yudong, Lei, Da, Li, Dezhong, and Dou, Xincun

Abstract

Highly efficient detection of environmental residual potentially toxic species is of concern worldwide as their presence in an excessive amount would greatly endanger the health of human beings as well as environmental sustainability. The solvation effect is a critical factor to be considered for understanding chemical reaction progress as well as the photophysical behaviors of substances and thus is promising for visualized detection of metal ions. Herein, by applying 5-amino-1,10-phenanthroline (APT) as the optical probe, a sensing strategy was proposed based on the solvation effect modulated complexation of APT towards different metal ions to achieve the visualized discrimination of four critical ions (Cu(ii), Zn(ii), Cd(ii), and Al(iii)). How the crucial intrinsic properties of the solvent (e.g., polarity, solvent free energy, and electrostatic potential) influenced the complexation and the product emission was clarified, and the detection performances were systematically evaluated with detection limits as low as the nM level and good recognition selectivity. Furthermore, a portable sensing chip was developed with potential for highly efficient analysis in complicated scenes; thus, this strategy offers a new insight into determining multiple metal ions or other critical substances upon solvation manipulation.

Published
2024
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48. One-Step Instantaneous Detection of Multiple Military and Improvised Explosives Facilitated by Colorimetric Reagent Design

Author

Guangfa Wang, Zu Baiyi, Dou Xincun, Jiguang Li, and Liu Yong

Subjects
Explosive material, business.industry, Chemistry, 010401 analytical chemistry, Color, Polysorbates, One-Step, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, Analytical Chemistry, Dinitrobenzenes, Explosive Agents, Potassium Permanganate, Limit of Detection, Reagent, Trace analysis, Colorimetry, Process engineering, business, Trinitrotoluene
Abstract

Although colorimetric detection based on reagents has been widely used in the fields of practical trace analysis, its versatility for detecting multitargets remains the most challenging problem. As a proof of concept, a general colorimetric reagent based on potassium isopropanol (C

Published
2020

49. Effective deposition potential induced size-dependent orientation growth of Bi-Sb alloy nanowire arrays

Author

Dou, Xincun, Yonggang Zhu, Xiaohu Huang, Liang Li, and Guanghai Li

Subjects
Bismuth -- Chemical properties, Transmission electron microscopes -- Usage, Scanning microscopy -- Usage, Chemicals, plastics and rubber industries
Abstract

Single-crystalline and highly preferentially oriented [Bi.sub.1-x][Sb.sub.x] alloy nanowire arrays are prepared into porous anodic alumina membrane by pulsed electrodeposition. Results reveal that the effective deposition potential controls the orientation and diameter of the [Bi.sub.1-x][Sb.sub.x] nanowire.

Published
2006

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