期刊：
NEW JOURNAL OF CHEMISTRY,2009年33(4):725-728 ISSN：1144-0546
通讯作者：
Li, Haibing
作者机构：
[Li, Haibing; Zhan, Junyan; Tian, Demei] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Li, Haibing] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
A series of triazole-modified calix[4]crowns, 3, containing hard and soft ion binding sites were synthesized in good yields via click chemistry. The hard and soft ion binding sites may selectively complex alkali metal or transition metal cations. Compound 3a shows good complex selectivity towards Pb2+ and 3c shows the highest Li+/K+ extraction ratio, suggesting that the triazole groups play an important role in metal ion binding.
作者：
Li Haibing*;Tian Demei;Chen Yuanyin;Gao Zhinong
期刊：
中国化学,2009年27(1):130-134 ISSN：1001-604X
通讯作者：
Li Haibing
作者机构：
[Tian Demei; Li Haibing] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.;[Chen Yuanyin; Gao Zhinong] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China.
通讯机构：
[Li Haibing] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Hubei, Peoples R China.
关键词：
calixarene;calixcrown;telomer;amino acid
摘要：
Three derivatived calix[4]crowns were condensed with calixarene segments: 2,6-bis(bromomethyl)-4-methyl-anisole (BBA) to afford their telomers TCA[4] in rational yields. The binding sites may complex metal ions or amino acids selectively. The telomers shows different metal ions selectivity in comparison with their monomers, which suggests that calixarene segment bridges play an important role in ion-binding. The liquid-liquid extraction experiment showed that telomer TCA[4]-Ⅲ was excellent receptor for zwitterionic α-amino acids and soft cations Ag~+ and Pb~(2+). The extraction percentage of tryptophan and histidine was as high as 87.9% and 91.5%, respectively.
摘要：
Novel ratiometric fluorescent cysteine probes based on naphthalene–thiourea–thiadiazole (NTTA) fluorescent organic nanoparticles (FONs) were designed and synthesized. NTTA FONs show good water solubility, high selectivity for sensing and a 74 nm red-shift of fluorescence emission upon binding cysteine in aqueous media are observed. Under optimum condition, linear relationships are found between the relative fluorescence intensity ratio I430/I356 and the logarithmic concentration of cysteine in the range of 0–100 μM with the detection limit was found to be 1.5 × 10−9 M, while the FL intensity of NTTA FONs to other amino acids is negligible. The possible mechanism is discussed.
摘要：
A simple fluorescence (FL) analysis method to polycyclic aromatic hydrocarbons (PAHs) has been reported using supramolecular nano-sensitizers combining of CdTe quantum dots (QDs) and cyclodextrins (CDs) as additive. The new fluorescence analysis pathway utilizes patent cyclodextrins and thioglycolic acid (TGA)-modified CdTe QDs which are easily prepared. It shows the fluorescent response of CdTe QDs towards different PAHs in the presence of CD via changing the numbers of CDs. These supramolecular nano-sensitizers are performed for the determination of phenanthrene and acenaphthene in water based on the response characteristics of different CDs. In comparison with acenaphthene, 9, 9-diflurofluorene produces a modest quenching of the fluorescence of CdTe in presence of gamma-CD. Under optimal conditions, the relative FL intensities of CdTe QDs are decreased linearly with increasing phenanthrene and acenaphthene in the range of 5 x 10(-7)-7.5 x 10(-5) M and 10(-7)-2.5 x 10(-5) M, with the corresponding detection limits (3 sigma) of 0.53 mu M (94.3 ng/mL) and 0.085 mu M (13.1 ng/mL), respectively. It is found that phenanthrene and acenaphthene decrease the FL intensity of the CdTe QDs with CDs in a concentration dependence that is best described by a Stern-Volmer-type equation. The possible mechanism is discussed. (c) 2008 Elsevier B.V. All rights reserved.
期刊：
Chemical Communications,2009年(32):4812-4814 ISSN：1359-7345
通讯作者：
Li, Haibing
作者机构：
[Li, Haibing; Yao, Yao; Han, Cuiping; Zhan, Junyan] Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
通讯机构：
[Li, Haibing] C;Cent China Normal Univ, Coll Chem, Minist Educ, Key Lab Pesticide & Chem Biol, Wuhan 430079, Peoples R China.
摘要：
Triazole-ester modified silver nanoparticles were designed and synthesized through click chemistry, which provided a highly selective colorimetric sensor for Cd2+.
期刊：
Chemical Communications,2009年(24):3545-3547 ISSN：1359-7345
通讯作者：
Li, Haibing
作者机构：
[Zhang, Liang; Li, Haibing; Han, Cuiping] Cent China Normal Univ, Key Lab Pesticide & Chem Biol CCNU, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
通讯机构：
[Li, Haibing] C;Cent China Normal Univ, Key Lab Pesticide & Chem Biol CCNU, Minist Educ, Coll Chem, Wuhan 430079, Peoples R China.
摘要：
Novel beta-cyclodextrin-4,4'-dipyridine supramolecular inclusion complex-modified silver nanoparticles were synthesized for the colorimetric determination of Yb(3+) ions in aqueous solution with high sensitivity (the visual detection limit was 2 x 10(-7) M), via Yb(3+)-induced aggregation to form chain-like supramolecular aggregates.
