ICCAS OpenIR
Modulating affinities of di-2-picolylamine (DPA)-substituted quinoline sensors for zinc ions by varying pendant ligands
Xue, Lin1,2; Wang, Huan-Huan1,2; Wang, Xiao-Jun3; Jiang, Hua1
2008-05-19
Source PublicationINORGANIC CHEMISTRY
ISSN0020-1669
Volume47Issue:10Pages:4310-4318
AbstractWe have developed a series of di-2-picolylamine (DPA)-substituted quinoline sensors, HQ1-4, bearing a pendant ligand at the 8 position of quinoline. UV-vis spectra of HQ1-4 showed similar variations to that of HQ5 but with different varying extents upon the titration of zinc ions. Fluorescence intensities of HQ1, HQ3, and HQ4 were enhanced 4-6 times upon the addition of 1 equiv of zinc ions under an aqueous buffer. Somewhat unexpectedly, HQ2 is nonfluorescent in the presence of metal ions, including zinc ions. The affinities of HQ sensors are distributed in a broad range from nanomolarity to femtomolarity by varying the pendant ligands near the coordination unit. More importantly, these new sensors exhibited very high selectivity for Zn2+ over Na+, K+, Mg2+, and Ca2+ at the millimolar level and over other transition metal ions at the micromolar level, except for Cd2+. These findings indicated that the incorporations of the pendant groups exerted no effect on the spectroscopic properties and selectivity of the parent fluorescent sensor, with the exception of HQ2. Finally, X-ray crystal structures of ZnHQ's revealed that the auxiliary pendant groups at the 8 position participated in zinc coordination and were able to tune the affinities of HQ sensors.
DOI10.1021/ic702393z
Indexed BySCI
Language英语
WOS IDWOS:000255770400047
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:100[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/65218
Collection中国科学院化学研究所
Corresponding AuthorJiang, Hua
Affiliation1.Chinese Acad Sci, Inst Chem, CAS Key Lab Photochem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Capital Normal Univ, Dept Chem, Beijing 100037, Peoples R China
Recommended Citation
GB/T 7714
Xue, Lin,Wang, Huan-Huan,Wang, Xiao-Jun,et al. Modulating affinities of di-2-picolylamine (DPA)-substituted quinoline sensors for zinc ions by varying pendant ligands[J]. INORGANIC CHEMISTRY,2008,47(10):4310-4318.
APA Xue, Lin,Wang, Huan-Huan,Wang, Xiao-Jun,&Jiang, Hua.(2008).Modulating affinities of di-2-picolylamine (DPA)-substituted quinoline sensors for zinc ions by varying pendant ligands.INORGANIC CHEMISTRY,47(10),4310-4318.
MLA Xue, Lin,et al."Modulating affinities of di-2-picolylamine (DPA)-substituted quinoline sensors for zinc ions by varying pendant ligands".INORGANIC CHEMISTRY 47.10(2008):4310-4318.
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