ANALYST
·
2011
·Vol. 137
·期 4
·953-958
·
IF 3.913
Li Jiao Liang,Xi Juan Zhao,Cheng Zhi Huang
Pyrophosphate ion (PPi) is crucial in varieties of biological processes and industrial applications, and thus it is very important how to recognize it with high selectivity. In this contribution, one terpyridine (tpy)-based fluorescent molecule, 4-(methylphenyl)-2,2′:6′,2′′-terpyridine (mptpy), has been reported to display a highly selective recognition for PPi in the presence of Zn(II). After exposure toward the Zn(II) ion, the characteristic emission of mptpy at 376 nm red-shifted to 406 nm with a strong enhancement upon an excitation at 280 nm, and then blue-shifted to 388 nm with the further addition of PPi. Absorption and fluorescence measurements showed that other phosphates including phosphate (Pi) as well as nucleotide triphosphates could not induce the spectral changes similar to PPi, demonstrating the unique binding effect between mptpy-Zn(II) and PPi. This process could also discriminate PPi from other inorganic anions. Therefore, a tpy-based fluorescence method for the highly selective recognition of PPi could be developed.
研究领域:
生物化学
·
分析化学
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DOI
PubMed
高影响因子
Science China-Technological Sciences
·
2020
·Vol. 63
·期 9
·1730-1738
·
IF 2.302
Xu LingSong,Meng FanCheng,Wei XiangFeng,Lin ChangHao,Zheng LianXi,Liu JieHua
ZIF-derived carbon structures are considered as desired electrode materials for supercapacitors due to their high surface area, high conductivity, and porous structure. However, the most reported ratio of 2-methylimidazole and Zn(II) is 4:1 to 20:1, which limits commercial applications due to the increasing cost. In this paper, a multirole Zn(II)-assisted method is presented from Zn(II) solution, ZnO, ZnO/ZIF-8 core-shell nanostructure, to 3D hierarchical micro-meso-macroporous carbon structures with a 1:1 ratio of 2-methylimidazole and Zn(II). The hierarchically porous carbon has a high surface area of 1800 m 2 g −1 due to the synergistic effect of multirole Zn(II). The unique carbon-based half-cell delivers the specific capacitances of 377 and 221 F g −1 at the current densities of 1.0 and 50 A g −1 , respectively. As a 2.5 V symmetrical supercapacitor, the device reveals a high double-layer capacitance of 24.4 F g −1 , a power density of 62.5 kW kg −1 , and more than 85.8% capacitance can be retained over 10000 cycles at 10 A g −1 . More importantly, the low-cost hierarchically porous carbon could be easily produced on a large scale and almost all chemicals can be reused in the sustainable method.
研究领域:
材料科学
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能源技术
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2022
·
IF 3.428
Han Zhang,Xi-Hui Diao,Chao Chen,Yaseen Muhammad,Yuan-Yuan Gao,Xiao-Jing Dong,Hao Wang,Wei Li,Chuan-Song Qi
The reactions of 1,2-bis(4-pyridyl)ethylene (bpe) and 2,5-furandicarboxylic acid (H 2 fdc) with Zinc(II) salts in different concentrations resulted in two new complexes, [Zn(fdc)(bpe)]∙DMF ( 1) and [Zn 4 (fdc) 4 (bpe) 4 (H 2 O) 2 ] ∙DMF·2H 2 O ( 2) . At lower concentrations, 1 was formed, in which {Zn 2 (CO 2 ) 2 } can be seen as a 6-connected node, and the whole framework is a 2-fold interpenetrated pcu network. On the contrary, at higher concentrations, 2 was synthesized, in which all Zn 2+ ions act as 4-connected nodes, and the whole framework is a 5-fold interpenetrated dia network. 1 and 2 are proven to be promising sensors towards Fe 3+ ions with high sensitivity and selectivity through fluorescence quenching.
研究领域:
化学
·
材料科学
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高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2023
·Vol. 37
·期 4
·e7027
·
IF 3.9
Rui Wang,Shu-Hui Yin,Bi-Liu Lan,Heng-Huan Ruan,Zhi-Hui Qiu,Zhong Zhang
Two cyclen-based multidentate N,O ligands, 1,4,7,10-tetrazazcyclododecane-N,N′,N″,N″′-tetra- p -methylbenzoic acid (H 4 L 1 ) and 1,4,7,10-tetrazazcyclododecane-N,N′,N″,N″′-tetra- p -cinnamic acid (H 4 L 2 ), were reacted with Zn (II) salts leading to a four-fold interpenetrated 3D binodal PtS-type network {[Zn 2 (HL 1 )Cl]·5H 2 O} n ( Zn-1) along with a 1D ribbon-like polymeric chain {[Zn 3 (HL 2 )Cl 3 (H 2 O) 2 ]·2CH 3 COCH 3 ·3H 2 O} n ( Zn-2 ). Both two compounds exhibited excellent water stability in a wide pH range from 2 to 12 and emitted either UV or visible blue-purple light. They can behave as recyclable fluorescent probes for highly selective sensing of nitrophenols with low detection limits. Additionally, the blue-purple emission of Zn-2 can be efficiently quenched by PA with a concentration as low as 20 μM; thus, the naked-eye detection of PA can be fulfilled under a 365 nm UV lamp. Based on the DFT calculation and spectral analysis evidences, it can be proposed that the selective detection of nitrophenols by two Zn (II) compounds is owing to a synergistic effect of different quenching mechanisms along with the interactions between probes and analytes.
研究领域:
化学
·
材料科学
·
环境科学
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高影响因子
LANGMUIR
·
2024
·
IF 3.7
Xue Chen,Yong Xiang,Xiaojing Zhang,Guanlin Li,Sihan Ai,Daoyong Yu,Baosheng Ge
Carbonic anhydrase (CA) plays a crucial role in the CO2 capture processes by catalyzing the hydration of CO2. In this study, we synthesized a bioinspired carbonic anhydrase Zn-MOF (metal–organic framework) incorporating 2-aminoimidazole and Zn2+ as initial constituents. The synthesized Zn-MOF exhibited promising potential for efficiently catalyzing the CO2 hydration. Structural analyses such as SEM, XRD, and BET confirmed that the Zn-MOF crystal consisted of stacked grains with an average size of approximately 36 nm, forming a micron-sized spherical structure. Functionally, Zn-MOF exhibited effective catalytic activity toward both CO2 hydration and ester hydrolysis. The introduction of amino groups significantly enhanced the esterase activity of Zn-MOF to 0.28 U/mg at ambient temperature, which was twice that of ZIF-8. Furthermore, the introduction of amino groups resulted in remarkable hydrothermal stability, with the esterase activity reaching 0.72 U/mg after undergoing hydrothermal treatment at 80 °C for 12 h. Additionally, Zn-MOF exhibited enhanced capability in CO2 hydration at a pH value exceeding 8.5. After six repeated uses, ZIF-8 and Zn-MOF retained approximately 68 and 65% of their initial enzyme activity, respectively, underscoring the potential practical applicability of Zn-MOF in industrial CO2 capture processes. This work showcases the development of a novel Zn-MOF crystal as an efficient CA mimic, effectively emulating the active sites of natural CA using 2-aminoimidazole as a coordinating ligand for Zn2+ coordination. These findings not only advance the field of innovative enzyme mimics but also pave the way for further exploration of industrial CO2 capture catalysts.
研究领域:
材料科学
·
生物化学
·
环境科学
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DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2019
·
IF 3.206
Tiantian Kang,Haoping Wang,Xiaoju Wang,Liheng Feng
A simple fluorescent probe comprised of coumarin and quinoline units was designed and synthesized through acylhydrazine bonding mode. On account of the “push-pull” structure, the probe exhibits high selectivity and sensitivity for Zn(II) with an obvious red-shift of fluorescence and a visible color change. The detection of Zn(II) by the probe is almost free from interference of other ions and reversible based on intramolecular charge transfer process. Three five-membered rings of the probe with Zn(II) were formed and verified by MS and 1 H NMR spectra. Notably, as a simple, fast and environmentally friendly device, detection of ions by test paper has great practicality, the probe could be designed as test papers for detecting Zn(II) taking advantage of the color change character under 365 nm UV lamps.
研究领域:
分析化学
·
材料科学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2018
·
IF 3.716
Liping Zhao,Juan Qiao,Ke Zhang,Dan Li,Hongyi Zhang,Li Qi
A chiral ligand exchange capillary electrochromatography (CLE-CEC) protocol was designed and implemented for d , l -amino acids enantioseparation with poly(maleic anhydride-styrene-methacryloyl- l -arginine methyl ester) as the coating. The block copolymer was synthesized through the reversible addition fragmentation chain transfer reaction. In the constructed CLE-CEC system, poly (methacryloyl- l -arginine methyl ester) moiety of the block copolymer played the role as the immobilized chiral ligand and Zn (II) was used as the central ion. Key factors, including pH of buffer solution, ratio of Zn (II) to ligands, the mass ratio of monomers in the block copolymer, which affect the enantioresolution were investigated. Comparing with the bare capillary, the CLE-CEC enantioresolution was enhanced greatly with the coating one. 5 Pairs of d , l -amino acids enantiomers obtained baseline separation with 5 pairs partly separated. The mechanism of enhancement enantioresolution of the developed CLE-CEC system was explored briefly. Further, good linearities were achieved in the range of 25.0 μM–5.0 mM for quantitative analysis of d -glutamine (r 2 = 0.997) and l -glutamine (r 2 = 0.991). Moreover, the proposed CLE-CEC assay was successfully applied in the kinetics study of glutaminase by using l -glutamine as the substrate.
研究领域:
分析化学
·
生物化学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Lu Han,Chuanming Liu,Xiaona Qin,Qianling Cui,Longxiao Zhang,Lidong Li
Zn 2+ ions sensing is vital for human health and environment, and developing low-cost, water-soluble, efficient probes is still highly demanded. Herein, we report a water-soluble imidazole-based fluorescent polymer as a ratiometric probe for Zn 2+ ions sensing. By a facile radical co -polymerization, the water-soluble fluorescent polymer of PVIV-0.5BTAM was obtained carrying imidazole and imidazolium moieties together with a small amount of diphenylbenzothiadiazole (BTAM) units. Upon excitation, PVIV-0.5BTAM gave rise to dual emission bands centered at 430 nm and 540 nm, corresponding to imidazole/imidazolium and BTAM, respectively. The addition of Zn 2+ ions can coordinate with imidazole rings via multi-valent mode and act as a crosslinker, leading to the intra- and/or inter-macromolecular aggregation. Accordingly, the yellow emission of BTAM was enhanced proportionally, while the blue emission of imidazole/imidazolium kept stable and served as internal standard. The linear working curve can be established by plotting the value of I 540 /I 430 as a function of Zn 2+ ions concentration. Thus, a low-cost, water-soluble, ratiometric fluorescent polymer probe was provided as a promising candidate for Zn 2+ ions sensing.
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高影响因子
Journal of the Iranian Chemical Society
·
2026
·Vol. 23
·期 8
·258
·
IF 2.4
Yu Haiyan,Zhang Li,Jia Yongpeng,Tian Ye
Two coordination polymers, CP1 and CP2, based on Cu(II) and Zn(II) ions, were synthesized and structurally characterized as fluorescent sensors for 1,10-phenanthroline, an important nitrogen-containing chelating agent widely used in coordination chemistry and industrial systems. Both materials exhibit good crystallinity, thermal stability, and intrinsic fluorescence. Their fluorescence sensing behaviors toward 1,10-phenanthroline were systematically investigated in aqueous media. CP1 and CP2 show high selectivity and sensitivity toward 1,10-phenanthroline, with Stern–Volmer constants of 1.11 × 10⁵ M⁻¹ and 6.95 × 10⁴ M⁻¹, and detection limits of 3.2 µM and 4.5 µM, respectively. In addition, both coordination polymers display good anti-interference ability and recyclability. Comparative studies reveal that the different sensing efficiencies of CP1 and CP2 are closely related to the distinct electronic properties of the Cu(II) and Zn(II) centers. Mechanistic investigations indicate that the fluorescence quenching mainly arises from coordination interactions between 1,10-phenanthroline and the metal centers. This work not only demonstrates the potential of coordination polymers as effective fluorescent sensors for phenanthroline detection, but also provides insight into the role of metal centers in regulating fluorescence sensing performance.
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DYES AND PIGMENTS
·
2025
·
IF 4.2
Yuqing Yang,Shicong Pei,Mingdi Yang,Kehua Zhang,Jie Jin,Yunsheng Ding,Xianhai Hu
Full-color fluorescent tunable materials have attracted much attention due to their broad application prospects in fields such as lighting, display devices, and biological imaging. However, it remains challenging to prepare environmentally friendly full-color fluorescent tunable materials through simple and efficient methods. Herein, a series of amino-functionalized complexes were synthesized, and, via covalent bonding, a color-tunable waterborne polyurethane system (WPU-Eu 1-x-y Tb x Zn y ) was developed, exhibiting both full-color and white fluorescence. In addition, due to the inherent differences in the ultraviolet absorption properties of each complex, the emission color can be further adjusted by changing the excitation wavelength. This dual mechanism enables both preset and dynamic color adjustments, providing various possibilities for applications such as anti-counterfeiting and display technologies. More importantly, WPU-Eu 1-x-y Tb x Zn y uses water as a dispersant, has a low VOC content, and is particularly safe and environmentally friendly.
研究领域:
材料科学
·
光学
·
环境科学
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DOI
高影响因子
Science of Advanced Materials
·
2021
·Vol. 13
·期 10
·1931-1936
·
IF 1.474
Cao Chanyuan,Chen Jinyan,Luo Yongjun,Deng Zhen,Zhu Shuang,Wang Xin,Zhao Wei-Wei
The hydrothermal reaction among Zn(NO3)2 · 6H2O, 1,3,5-benzenetricarboxylic acid (H3BTC), and 7-hydroxy-5-methyl-1,3,4-triazaindolizine (Hmtpo) synthesized a fresh complex of [Zn(HBTC)(HATAZ)(H2O)2]
n
· 2n(H2O) · n(Hmtpo) (1, HATAZ is 3-amino-1,2,4-triazole). This supramolecular framework showed intense luminescence emission at RT. For treating diabetic ocular complications, the preventive and therapeutic effects of the compound on diabetic ocular
complications were analyzed, and the detailed mechanism was investigated. ELISA was conducted to examine the inflammatory cytokines generated through the fundus arterial endothelial cells. Furthermore, RT-PCR was carried out to determine the oxidative stress level in the fundus arterial endothelial
cells.
研究领域:
生物化学
·
医学
·
材料科学
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DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2017
·Vol. 33
·期 1
·242-248
·
IF 0.767
GAO Yi-Fen,ZHUANG Gui-Lin,BAI Jia-Qi,ZHONG Xing,WANG Jian-Guo
Anovel four-fold interpenetrating metal-organic framework (MOF) (1) was obtained following reaction between Zn2+ and benzene-1,3,5-tribenzoate (H3BTB). Single crystal analysis demonstrated that the framework featured a three-dimensional (10, 3) net anionic
framework with dimethyl formamide (DMF) and H2NMe2
+ encapsulated in channels along the b axis. Alternating current impedance measurements revealed an unusual temperature-dependent conductance. As the temperature was increased from 20°C the conductance
value increased from 0.36×10-6 S·cm-1 to a maximum value of 2.24×10-5 S·cm-1 at 160°C, and then began to decrease. A combination of molecular dynamics (MD) simulations and dielectric property measurements demonstrated
that this conductance behavior could be attributed to the synergic effect of the enhanced mobility of the H2NMe2
+ cation and removal of DMF as the temperature was increased. Furthermore, the transporting energy barrier was determined to be 0.20 eV, which confirmed
that the conductance was caused by proton conductivity. This work indicated that the confinement of H2NMe2
+ within the pores of MOFs is a promising method to induce electrical conductivity. Interestingly, the emission peak of 1 was blue-shifted when
compared with that of H3BTB. Density functional theory (DFT) calculations revealed that this phenomenon was caused by the disruption of delocalized π-bonds within the BTB3- ligand in 1.
研究领域:
材料科学
·
物理化学
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DOI
高影响因子
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