摘要：
A novel rhodamine-based dual probe Rh-2 for trivalent ferric ions (Fe3+) was successfully designed and synthesized, which exhibited a highly sensitive and selective recognition towards Fe3+ with an enhanced fluorescence emission in methanol-water media (v/v = 7/3, pH = 72). The probe Rh-2 could be applied to the determination of Fe3+ with a linear range covering from 3.0 x 10(-7) to 1.4 x 10(-5) M and a detection limit of 1.24 x 10(-8) M. Meanwhile, the binding ratio of Rh-2 and Fe3+ was found to be 1:1. Most importantly, the fluorescence and color signal changes of the Rh-2 solution were specific to Fe3+ over other commonly coexistent metal ions. Moreover, the probe Rh-2 has been used to image Fe3+ in living cells with satisfying results. (C) 2016 Elsevier B.V. All rights reserved.
摘要：
A new Schiff base fluorescence probe, 3-Allylsalicylaldehyde salicyl-hydrazone (L), for Mg2+ was designed and synthesized. The fluorescence of the sensor L was enhanced remarkably by Mg2+ with 2: 1 binding ratio, and the binding constant was determined to be 1.02 x 10(7) M-1. Probe L had high sensitivity for Mg2+ in a solution of DMF/water (4: 1, v/v, pH 7.5), and the detection limit was 4.88 x 10(-8) mol/L. Common coexistent metal ions, such as K+, Na+, Ag+, Ca2+, Zn2+, Ba2+, Bi2+, Cu2+, Ni2+, Hg2+, Fe3+, and Al3+, showed little or no interference on the detection of Mg2+ in solution. The fluorescence probe L, which was successfully used for the determination of trace Mg(II) in real samples, was shown to be promising for liquid-phase extraction coupled with fluorescence spectra.
作者机构：
[Zeng, Xiao-Xiong; 钟敏; 王晓晴] College of Food Science and Technology, Nanjing Agriculture University, Nanjing 210095, China;[王榆元] College of Chemistry and Chemical Engineering, Nanhua University, Hengyang 421001, China
通讯机构：
College of Food Science and Technology, Nanjing Agriculture University, China
作者：
He, F. F.;Wang, H. Q.*;Wang, Y. Y.;Wang, X. F.;Zhang, H. S.;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry,2013年295(1):167-177 ISSN：0236-5731
通讯作者：
Wang, H. Q.
作者机构：
[Wang, X. F.; Wang, H. Q.; He, F. F.; Tang, J. H.; Li, H. L.; Wang, Y. Y.; Zhang, H. S.] Univ S China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.;[Wang, H. Q.] Univ S China, Sch Chem & Chem Engn, 28 Changsheng W Rd, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Wang, H. Q.] U;Univ S China, Sch Chem & Chem Engn, 28 Changsheng W Rd, Hengyang 421001, Hunan, Peoples R China.
关键词：
Magnetic absorbent;Thorium ion;Imprinted polymers;Schiff base;Separation
作者机构：
School of Chemistry and Chemical Engineering
关键词：
Lead Determination;Ion Imprinted Particles;Carbon Nanotube;Selective Recognition
摘要：
A new surface ion-imprinted Multi-walled carbon nanotubes (MCNTs), which was 6,6'-((1E,1'E)-(pyridine-2,6-diyl-bis(azanylyl))bis(methanylylidene))bis(2-allyl-phenol) and Pb(II) complex as functional monomer and template ion was presented for extracting and enrichment traces of Pb(II) ion. Parameters affecting the recovery of Pb(II) have been in-vestigated in detail. The novel IMCNTs display high affinity, specificity, and selectivity for Pb(II) with a maximum uptake capacity of 115.5 mg·g –1 at pH 4.0. Meanwhile, only 11 mins was enough for extracting 98.5% Pb(II) for the IMCNTs. No significant loss in adsorption capacity is observed when the IMCNTs are reused for eleven times. Separa-tion and preconcentration with IMCNTs particles results in a limit of detection of 0.47 μg·L –1 (3σ) and RSD (n = 8) of 1.16% by using atomic absorption spectrophotometer (AAS).
通讯机构：
[Wang, Hong-Qing] U;Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Hunan, Peoples R China.
摘要：
C52H44N4O4Th, triclinic, P (1) over bar (no. 2), a = 16.3338(3) angstrom, b = 17.1662(3) angstrom, c = 18.5769(6) angstrom, alpha = 101.145(1)degrees, beta = 95.195(1)degrees, gamma = 117.054(1)degrees, V = 4455.6 angstrom(3), Z = 4, R-gt(F) = 0.0314, wR(ref)(F-2) = 0.0914, T = 296 K.
