Optical fluoride sensor based on monomer-dimer equilibrium of scandium(III)-octaethylporphyrin in a plasticized polymeric film.
Optical fluoride sensor based on monomer-dimer equilibrium of scandium(III)-octaethylporphyrin in a plasticized polymeric film.
复制标题
基于增塑聚合物薄膜中钪(III)-八乙基卟啉单体-二聚体平衡的光学氟化物传感器。
DOI:
10.1016/j.aca.2007.07.048
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发表时间:
2007
影响因子:
6.2
通讯作者:
Meyerhoff,MarkE
中科院分区:
文献类型:
--
作者:
Kang,Youngjea;Kampf,JeffW;Meyerhoff,MarkE
A fluoride-selective optical sensor based on scandium(III)-octaethylporphyrin (Sc(III)OEP) as an ionophore within a plasticized PVC film is described. The presence of fluoride ion in the aqueous sample phase increases the formation of a difluoro-bridged Sc(III)OEP dimer species in the polymer film. The ability of the Sc(III) porphyrin to form the dimeric structure in the presence of fluoride is confirmed by UV–vis spectroscopy and X-ray crystallography. For more practical sensing applications, a pH chromoionophore (ETH 7075) is added to the plasticized PVC film along with Sc(III)OEP and the observed optical response is based on coextraction of protons with sample phase fluoride to create the dimeric porphyrin and a protonated chromoionophore species. The selectivity pattern observed is F−≫ClO4−, SCN−, NO3−>Br−, Cl−. Only organic salicylate is a significant interferent. Fast and reversible fluoride response is observed over the range of 10−4to 10−2M fluoride, allowing use of the sensing film in a waveguide configuration for flow-injection measurements.
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影响因子:
--
作者:
H. Juarez;G. S. Ott;J. C. Chen;T. L. Brooks;L. Stanker
通讯作者:
L. Stanker
DOI:
--
发表时间:
1984
期刊:
JIM - Journal of Immunological Methods
影响因子:
--
作者:
S. Burchiel;J. R. Billman;T. Alber
通讯作者:
T. Alber
影响因子:
--
作者:
F. Franek
通讯作者:
F. Franek
影响因子:
4.1
作者:
B. Pavlů;U. Johansson;C. Nyhlén;A. Wichman
通讯作者:
A. Wichman
影响因子:
4.8
作者:
P. Thomas;A. Y. Lu;D. Ryan;S. B. West;J. Kawalek;W. Levin
通讯作者:
W. Levin