Mondal, Palash et al. published their research in Journal of Physical Chemistry C in 2019 | CAS: 4546-95-6

1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6) belongs to triazole derivatives. The many free lone pairs in triazoles make them useful as coordination compounds, although not typically as haptic ligands. 1,2,3-Triazoles are usually prepared following (3+2) cycloaddition protocols. A common technique for unsubstituted triazoles is the Huisgen azide-alkyne 1,3-dipolar cycloaddition: a azide and an alkyne react at high temperature to form a ring. However, the Huisgen strategy produces a mixture of isomers (typically 1,4- and 1,5-disubstituted) when used to produce substituted triazoles.Product Details of 4546-95-6

Colorimetric Dual Sensors of Metal Ions Based on 1,2,3-Triazole-4,5-Dicarboxylic Acid-Functionalized Gold Nanoparticles was written by Mondal, Palash;Yarger, Jeffery L.. And the article was included in Journal of Physical Chemistry C in 2019.Product Details of 4546-95-6 This article mentions the following:

A simple, rapid, selective, and cost-effective colorimetric assay for Cr3+ and Eu3+ ion detection has been developed using functionalized gold nanoparticles. Gold nanoparticles (AuNPs) were prepared using HAuCl4, where sodium citrate is a reducing agent as well as a capping agent, and then functionalized with 1,2,3-triazole-4,5-dicarboxylic acid (TADA). Fourier transform IR (FTIR) and Raman spectroscopies suggested that TADA was functionalized on the surface of AuNPs through the N atom of triazole. The TADA-functionalized gold nanoparticles (TADA@AuNPs) simultaneously detect Cr3+ and Eu3+ ions from aqueous solution and showed different responses to the two metal ions (Cr3+ and Eu3+) based on an aggregation-induced color change of AuNPs. They showed a color change from wine red to blue, which was easily detected by the naked eye, as well as by UV-visible and FTIR spectroscopies. The surface plasmon resonance absorbances of Cr3+ and Eu3+ are 633 and 671 nm, resp., when Cr3+ and Eu3+ react with TADA@AuNPs and showed good linearity with Cr3+ and Eu3+ concentrations with detection limits 5.89 nM and 4.30 μM, resp. (S/N = 3). The TADA@AuNPs showed excellent selectivity toward Cr3+ and Eu3+ compared to those of the 16 different metal ions. We had also tested the selectivity of TADA@AuNPs toward Eu3+ compared to that of the other 10 lanthanide systems. Optimal detection was achieved toward Cr3+ and Eu3+ ions in the pH range 4-10. In addition, TADA@AuNPs were applied to detect Cr3+ and Eu3+ ions from lake water showing low interference. In the experiment, the researchers used many compounds, for example, 1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6Product Details of 4546-95-6).

1H-1,2,3-Triazole-4,5-dicarboxylic acid (cas: 4546-95-6) belongs to triazole derivatives. The many free lone pairs in triazoles make them useful as coordination compounds, although not typically as haptic ligands. 1,2,3-Triazoles are usually prepared following (3+2) cycloaddition protocols. A common technique for unsubstituted triazoles is the Huisgen azide-alkyne 1,3-dipolar cycloaddition: a azide and an alkyne react at high temperature to form a ring. However, the Huisgen strategy produces a mixture of isomers (typically 1,4- and 1,5-disubstituted) when used to produce substituted triazoles.Product Details of 4546-95-6

Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics