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Polydiacetylene-based gels for solvent discrimination and formation of Au/Ag nanoparticles with embedded photocatalytic performance

Authors :
Wenjun Song
Yajuan Li
Lijun Geng
Guoliang Feng
Jujie Ren
Xudong Yu
Source :
Materials & Design, Vol 205, Iss , Pp 109744- (2021)
Publication Year :
2021
Publisher :
Elsevier, 2021.

Abstract

two novel gelators N-TPY-DA and O-TPY-DA were designed. By introduction of Eu3+ followed by UV-irradiation, Eu3+/O-TPY-PDA polymeric gel with dark purple color and red emission color was obtained. Furthermore, colorimetric and fluorescent sensor arrays toward organic solvents could be obtained by Eu3+/O-TPY-PDA gels. Eu3+/O-TPY-PDA gel showed dark purple-to-red color response toward organic solvents such as CH2Cl2, CHCl3, THF and DMF. On the other hand, DMF and methanol both triggered red-to-blue emission color changes of Eu3+/O-TPY-DA gel. The two solvents could be further discriminated by fluorescent spectral difference. Furthermore, O-TPY-PDA or N-TPY-PDA gel could be also utilized to absorb Ag+ or Au3+ from aqueous solutions. By in situ reduction, the obtained fibrous xerogel assembly embedded with Ag or Au nanoparticles had enhanced photocatalytic performance. This work showed how a simple gel system converts to materials with multiple functions including pollutant sensing, absorption and functional nanoparticle formation.

Details

Language :
English
ISSN :
02641275
Volume :
205
Issue :
109744-
Database :
Directory of Open Access Journals
Journal :
Materials & Design
Publication Type :
Academic Journal
Accession number :
edsdoj.0dac541a94b40f9afa161aaa107b06b
Document Type :
article
Full Text :
https://doi.org/10.1016/j.matdes.2021.109744