title: A novel fluorescent sensor for Cr3+ based on rhodamine-cored poly (amidoamine) dendrimer.
abstract: A novel poly (amidoamine) (PAMAM) dendrimer, comprising rhodamine B unit in the core and 1-phenyl-3-methyl-5-pyrazolone unit at the periphery, has been synthesized and characterized. The dendrimer shows dramatic increase in its fluorescence intensity in the presence of proton and metal cations, especially in the presence of Cr(3+). The complex formed by dendrimer and Cr(3+) in ethanol solution has also been studied, considering the potential application for Cr(3+) fluorescent sensor. The influence of the unique chemical structure and resulted photoinduced electron transfer, as well as spirolactam ring-opening on the photophysical properties of the product has been investigated.
authors: State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, PR China. leiyonglin@163.com
authors: Yonglin
authors: Y
authors: Lei
authors: Yuanqiang
authors: Y
authors: Su
authors: Jichuan
authors: J
authors: Huo
mesh_terms: D002857:Chromium / Q000032:analysis*; D050091:Dendrimers / Q000737:chemistry*; D004583:Electrons; D005456:Fluorescent Dyes / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D012235:Rhodamines / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D050091:Dendrimers; D005456:Fluorescent Dyes; C104700:PAMAM Starburst; D012235:Rhodamines; D002857:Chromium; C029773:rhodamine B