title: Highly selective and reversible chemosensor for Pd(2+) detected by fluorescence, colorimetry, and test paper.
abstract: A "turn-on" fluorescent and colorimetric chemosensor (RBS) for Pd(2+) has been designed and synthesized through introduction of sulfur as a ligand atom to Rhodamine B. RBS exhibits high selectivity (freedom from the interference of Hg(2+ )in particular) and sensitivity toward Pd(2+) with a detection limit as low as 2.4 nM. RBS is also a reversible sensor, and it can be made into test paper to detect Pd(2+) in pure water. Compared to the chemosensors that introduced phosphorus to Rhodamine to detect Pd(2+), RBS can be synthesized more simply and economically.
authors.affiliation: Department of Chemistry, China Agricultural University , Beijing 100193, People's Republic of China.
authors.forename: Mian
authors.initials: M
authors.lastname: Wang
authors.forename: Xiaomei
authors.initials: X
authors.lastname: Liu
authors.forename: Huizhe
authors.initials: H
authors.lastname: Lu
authors.forename: Hongmei
authors.initials: H
authors.lastname: Wang
authors.forename: Zhaohai
authors.initials: Z
authors.lastname: Qin
mesh_terms: D003124:Colorimetry / Q000295:instrumentation / Q000379:methods*; D005456:Fluorescent Dyes / Q000737:chemistry; D007854:Lead / Q000032:analysis*; D057230:Limit of Detection; D010209:Paper; D012235:Rhodamines / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D014874:Water Pollutants, Chemical; D007854:Lead; C029773:rhodamine B
keywords: chemosensor; colorimetric; fluorescent; high selectivity; palladium; reversible