A fluorescent probe for zinc ions based on N-methyltetraphenylporphine with high selectivity.
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).
Ma
Qiu-Juan
QJ
State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China.
Zhang
Xiao-Bing
XB
Zhao
Yan
Y
Li
Chun-Yan
CY
Han
Zhi-Xiang
ZX
Shen
Guo-Li
GL
Yu
Ru-Qin
RQ
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
D005456:Fluorescent Dyes; D007477:Ions; D008665:Metalloporphyrins; C538833:N-methyltetraphenylporphine; D011166:Porphyrins; C049692:tetraphenylporphine; D015032:Zinc