title: A fluorescent probe for zinc ions based on N-methyltetraphenylporphine with high selectivity.
abstract: N-methyl-alpha,beta,gamma,delta-tetraphenylporphine (NMTPPH) has been used to detect trace amount of zinc ions in ethanol-water solution by fluorescence spectroscopy. The fluorescent probe undergoes a fluorescent emission intensity enhancement upon binding to zinc ions in EtOH/H(2)O (1:1, v/v) solution. The fluorescence enhancement of NMTPPH is attributed to the 1:1 complex formation between NMTPPH and Zn(II) which has been utilized as the basis for the selective detection of Zn(II). The linear response range covers a concentration range of Zn(II) from 5.0x10(-7) to 1.0x10(-5)mol/L and the detection limit is 1.5x10(-7)mol/L. The fluorescent probe exhibits high selectivity over other common metal ions except for Cu(II).
authors: State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
authors: Qiu-Juan
authors: QJ
authors: Ma
authors: Xiao-Bing
authors: XB
authors: Zhang
authors: Yan
authors: Y
authors: Zhao
authors: Chun-Yan
authors: CY
authors: Li
authors: Zhi-Xiang
authors: ZX
authors: Han
authors: Guo-Li
authors: GL
authors: Shen
authors: Ru-Qin
authors: RQ
authors: Yu
mesh_terms: D005456:Fluorescent Dyes / Q000494:pharmacology*; D007477:Ions / Q000737:chemistry; D008665:Metalloporphyrins / Q000737:chemistry; D008954:Models, Biological; D011166:Porphyrins / Q000737:chemistry; D013379:Substrate Specificity; D015032:Zinc / Q000032:analysis* / Q000737:chemistry
chemical_list: D005456:Fluorescent Dyes; D007477:Ions; D008665:Metalloporphyrins; C538833:N-methyltetraphenylporphine; D011166:Porphyrins; C049692:tetraphenylporphine; D015032:Zinc