A highly Hg(II)-selective chemosensor with unique diarylethene fluorophore was written by Ji, Heesun;Kim, Jinho;Yoo, Jung Whan;Lee, Hyeong Seok;Park, Ki-Min;Kang, Youngjin. And the article was included in Bulletin of the Korean Chemical Society in 2010.Recommanded Product: 66943-05-3 This article mentions the following:
A systematic investigation into photophys. and coordinative properties to varied metal ions of 1,2-bis[9,9-diethyl-7-(1,4,7,10-tetraoxa-13-azacyclopentadecane)fluoren-2-yl]-3,3,4,4,5,5-hexafluorocyclopentene (L1) is reported. A novel fluorene and perfluorocyclopentene based ligand L1 with NO4 donor set was synthesized and was evaluated as fluorometric sensor for Ni2+, Ag+, Co2+, Zn2+, Cd2+, and Hg2+. This ligand exhibits enhanced fluorescence intensity upon addition of all metal ions through the CHEF effect and the formation of 1:2 complexes. In particular, ligand L1 was demonstrated highly selectivity and sensitivity for the Hg2+ ion due to the strong interactions between NO donor set and metal ion. In the experiment, the researchers used many compounds, for example, 1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3Recommanded Product: 66943-05-3).
1,4,7,10-Tetraoxa-13-azacyclopentadecane (cas: 66943-05-3) belongs to ethers. Ether is less polar than esters, alcohols or amines because of the oxygen atom that is unable to participate in hydrogen bonding due to the presence of bulky alkyl groups on both sides of the oxygen atom. Electron-deficient reagents are also stabilized by ethers. For example, borane (BH3) is a useful reagent for making alcohols. Pure borane exists as its dimer, diborane (B2H6), a toxic gas that is inconvenient and hazardous to use. Borane forms stable complexes with ethers, however, and it is often supplied and used as its liquid complex with tetrahydrofuran (THF).Recommanded Product: 66943-05-3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem