《Polytriazole bridged with 2,5-diphenyl-1,3,4-oxadiazole moieties: a highly sensitive and selective fluorescence chemosensor for Ag+》 was published in RSC Advances in 2015. These research results belong to Cao, Shoupeng; Pei, Zhichao; Xu, Yongqian; Zhang, Ruina; Pei, Yuxin. Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene The article mentions the following:
Fluorescent conjugated polytriazoles (FCP 1-4) containing both 2,5-diphenyl-1,3,5-oxadiazole (OXD) and 1,2,3-triazole moieties in the main chain were synthesized from aromatic diazide (1) and dialkynes (2-5) via click polymerization, resp. In the polymers, OXDs (fluorophores) and triazole rings (generated via CuAAC acting as metal ion ligands) comprise a fluorescent system. The polytriazoles displayed relatively strong emission with quantum yields in the range of 0.20-0.28 at room temperature in DMF. The study on their ion-responsive properties showed that, although all four FCPs have good selectivity for Ag+, the integration of alkoxy side groups (methoxy for FCP 2, hexyloxy for FCP 3 and 2-ethylhexyloxy for FCP 4) to the main chains of the polytriazoles decreased their sensitivity for Ag+via alteration of the polymer aggregation status and electron d. of the main chains. Thus FCP 1 is highly sensitive for Ag+, where its Ksv is as high as 1.44 × 105 M-1 and its lowest detection limit is in the ppb range (4.22 × 10-7 M). This study provides an efficient click approach to the synthesis of a novel fluorescence sensor for Ag+ detection, which could expand the application of click polymerization in designing fluorescence sensors based on the triazole unit. In addition to this study using 1,4-Diethynyl-2,5-dimethoxybenzene, there are many other studies that have used 1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene) was used in this study.
1,4-Diethynyl-2,5-dimethoxybenzene(cas: 74029-40-6) belongs to ethers.The C-O bonds that comprise simple ethers are strong. Quality Control of 1,4-Diethynyl-2,5-dimethoxybenzene They are unreactive toward all but the strongest bases. Although generally of low chemical reactivity, they are more reactive than alkanes.
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem