SUPRAMOLECULAR CHEMISTRY
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2011
·
IF 1.94
Jing Cao,Jun Xiang Feng,Yong Xiang Wu,Xue Qun Pei,Jiao Jiao Yan,Yang Liu,Wen Jie Qin,Xiao Bin Zhang
A novel 15-aza-5-crown ether linked to styryl chemosensory 13-(4-((9H-fluoren-9-ylidene)methyl)-2-nitrophenyl)-1,4,7,10-tetraoxa-13-azacyclopentadecane was designed and synthesised, it would not occur during photoisomerisation under radiation of light but shows special capability of selectively recognising for Sr2+.
研究领域:
化学
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材料科学
✓ 已验证
DOI
高影响因子
AUSTRALIAN JOURNAL OF CHEMISTRY
·
2019
·Vol. 72
·期 7
·533-541
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IF 1.226
Sai Huang,Mei Yang,Xin-Yu Deng,Qian Jiang Zhu,Ying Huang,Zhu Tao,Kai Chen
In the present work, a host–guest system of a hemimethyl-substituted cucurbit[6]uril derived from 3α-methyl-glycoluril (HMeQ[6]) and a hemicyanine dye, trans-4-[4-(dimethylamino)styryl]-1-methylpyridinium iodide (t-DSMI) showing strong fluorescence emission has been evaluated as a fluorescent probe. The results of a preliminary systematic study on the detection of a series of inorganic anions have revealed that this Q[n]-based host–guest fluorescent probe shows clear responses to BF4− and H2PO4− anions through distinct fluorescence quenching. Application of this Q[n]-based host–guest interaction system in anion recognition or detection opens a new avenue in Q[n] chemistry.
研究领域:
化学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANICA CHIMICA ACTA
·
2019
·
IF 2.433
Lixia Liu,Xuefang Shang,Ruiqi He,Jie Li,Yanmei Chen,Hongli Chen,Tianyun Wang
A zinc(II) complex–based selective colorimetric chemosensor for H 2 S was synthesized. The ligand and complex crystals were obtained, and the molecular structures were confirmed by single-crystal X-ray diffraction analysis in addition to electrospray ionization high resolution mass spectrometer, as well as elemental analysis . The photo-physical and recognition properties toward HS – were examined. The complex indicated the presence of HS – with an obvious color change from yellow to red, based on zinc ion displacement mechanism. However no obvious changes were observed in the presence of other anions (AcO − , H 2 PO 4 − , F − , Cl − , Br − , I − and SO 3 2− ). In addition, the chemosensor was applied to assess HeLa cell cytotoxicity. Our inorganic-reaction based sensor for HS – is simple, easily prepared and efficient. The complex has many potential chemical and analytical applications for the sensing of H 2 S.
研究领域:
化学
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生物学
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医学
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2022
·
IF 18.027
Tingting Zhang,Haoyu Bai,Yunliang Zhao,Bo Ren,Tong Wen,Licai Chen,Shaoxian Song,Sridhar Komarneni
Various kinds of clays occur naturally and are accompanied by particular cations in their interlayer domains. Here we report the reassembled membranes with nanofluidic channel arrays by using the natural clays montmorillonite, mica, and vermiculite, which were imparted with the natural selectivity for realizing precise recognition and directional regulation of the naturally occurring interlayer cations. A typical surface-governed ionic transport behavior was observed in the clay nanofluidic channels. Through asymmetric structural modification, cationic current rectification was realized in montmorillonite channels that performed as a nanofluidic diode. Interestingly, in the mica nanofluidic channel, the K+ that was naturally occurring in the interlayer domain of mica showed a reciprocating motion and resulted in a periodically fluctuating current. Electrodialysis demonstrated that such a fluctuating current reflects a directional selectivity for K+, achieving at least a 6000 times permeation rate difference with Li+ ions. The specific selectivity for Li+/Mg2+ on vermiculite reached up to 856 times with similar cations by the current technique. As-obtained clay membranes possess application prospects in energy conversion, brine resource development, etc. Such a strategy can achieve the designed selectivity through systematic screening of the building blocks, thus imparting them with the inherent characteristics of natural clays, which provides an alternative solution to the present manufacture of selective membranes.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2019
·
IF 1.795
Mei-Xiang Yang,Ming Liu,Mei Yang,Qin Wang,Xi Zeng,Zhu Tao,Xin Xiao,Ying Huang
In the present work, a well-known host–guest inclusion complex comprising a cucurbit[7]uril (Q[7]) and an important biological dye, Hoechst-33258 (H33258) was selected as a fluorescence probe. In contrast to the pH conditions in which H33258 is exhibited in the literature, these being, mono- or di-protonated states, in the present work, we selected an extreme case, whereby H33258 was displayed in an anionic state (pH = 11). The investigation of the host–guest interaction demonstrated similar inclusion modes in a wide pH range, that is the dumbbell-like inclusion complex in which one Q[7] includes piperazine moiety and another Q[7] includes the phenol moiety of H33258. Moreover, investigation on the binding capacity of the 15 selected anions under three representative pH levels (pH = 2, pH = 4.5 and pH = 11, respectively) indicated that the H33258@Q[7] probe displayed unique selectivity on HPO 4 2 − anion in medium at pH = 11. More importantly, the probe could open a new platform in Q[ n ]-chemistry, that is the Q[ n ]-based host–guest interaction systems can apply in anion recognition or response.
研究领域:
化学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2019
·
IF 2.284
Xiaolin Yang,Yushan Zhang,Wanqiang Liu,Jinwei Gao,Yuhui Zheng
Carbon nanomaterials have aroused considerable interests due to excellent optical performances, but most of achieved carbon dots possess blue luminescence under UV-light irradiations. Herein, we report the preparation of phosphorus and nitrogen co-doped carbon quantum dots (PNCQDs) via hydrothermal method by employment of 1,3-phenylenediamine, citric acid and H 3 PO 4 as precursors. The particle size of the water-soluble PNCQDs is in the range between 4 and 6 nm and the average diameter is determined to be 4.75 nm. The resulted quantum dots give rise to bright green emission at 504 nm and the excitation-dependent behavior has been found. Moreover, it demonstrates luminescence stability toward a broad pH range from 1 to 10. Fluorometric titration studies reveal that close interactions occur between carbon dots and nitrite ions and a switched off effect has been achieved. In addition, prospective application of the quantum dots in tap water and live cells has also been demonstrated.
研究领域:
材料科学
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光学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2020
·
IF 3.232
Yang Yu,Sai Xu,Yuefeng Gao,Muhan Jiang,Jinsu Zhang,Xiangping Li,Xizhen Zhang,Baojiu Chen
The development of upconversion nanoparticles based logic systems, especially integrated logic systems is still a challenge until now. In this work, an upconversion nanocomposite system is developed and studied for the sensing abilities toward hydrion, hydroxyl ions , metal ions and anions (S 2 − , I − ) by taking the advantages of turn-on and turn-off upconversion fluorescence switching response. Triggering by different kinds of ions, the upconversion system can act as a fluorescence switch due to the specific recognition abilities of Rhodamine 6G functionalized PEI for specific ions and the energy transfer process from upconversion nanoparticles to recognition molecules. Based on these results, multiple molecular logic gates , including single-input logic operation (YES, NOT), double-inputs logic operation (OR, AND, NOR, INHIBIT) and multiple-input integrative logic operation (INHIBIT+OR) are developed by employing hydrion, hydroxyl ions, metal ions and anions as inputs and the changes in the upconversion fluorescence intensity as output. The multiple logic operations are of great significance for the applications in biomedicine and molecular calculation.
研究领域:
生物医学
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纳米技术
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化学
✓ 已验证
DOI
高影响因子
CURRENT ORGANIC SYNTHESIS
·
2018
·Vol. 15
·期 1
·143-149
·
IF 1.69
Shang Xuefang,Li Jie,Guo Kerong,Dang Qian,Wang Tianyun,Zhang Jinlian,Xu Xiufang
Background: Azobenzol derivatives are important organic materials and show unique optical function. As a potential host, azobenzene has been broadly exploited in many areas because of its efficient inclusion ability and easy derivatization by functional groups. Objective: A series
of twelve novel compounds have been synthesized and optimized based on azobenzol derivatives. Method: The binding properties were evaluated for biologically important anions (F-, Cl-, Br-, I-, AcO- and H2PO4-) by theoretical investigation, UV-vis, fluorescence experiments. Results: The
compound containing three nitro groups displayed the strongest binding ability for AcO- ion among synthesized compounds. Theoretical investigation analysis revealed that the intramolecular hydrogen bond existed in the structure of the synthesized compounds. Conclusion: we have developed
twelve compounds based on azobenzol derivatives. Compound 6 involving three nitro groups showed high sensitive and selective binding ability for acetate ion through multiple hydrogen bonds among anions tested including AcO-, F-, H2PO4-, Cl-, Br- and I- due to the conformational complementarity
and higher basicity. Compound 6 also can be used as a colorimetric sensor for detecting acetate ion in environmental and pharmacy samples. The above results can provide a clue for the constructing of anion receptor based on azobenzol derivatives.
研究领域:
有机化学
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分析化学
✓ 已验证
DOI
高影响因子
LUMINESCENCE
·
2016
·Vol. 32
·期 5
·765-771
·
IF 1.452
Kui Ren,Xuefang Shang,Yanmei Chen,Xueli Zhang,Jiajia Fu,Peipei Zhao,Jinlian Zhang
A novel Cu(II) complex chemosensor for hydrogen sulfide with azo as the colorimetric group has been synthesized. The complex and ligand crystals were obtained and the molecular structures were characterized by X-ray diffraction and Electrospray ionization High resolution mass spectrometer (ESI-HRMS). The photophysical and recognition properties were examined. The complex can recognize S 2 − , with an obvious color change from yellow to red based on a copper ion complex displacement mechanism. By contrast, no obvious changes were observed in the presence of other anions (AcO − , H 2 PO 4 − , F − , Cl − , Br − and I − ). We present a simple, easily prepared, yet efficient, inorganic reaction-based sensor for the detection of S 2 − . The complex should have many chemical and analytical applications in the sensing of hydrogen sulfide.
研究领域:
化学传感
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 80
·50920-50927
·
IF 3.108
Kuerbanjiang Rouzi,Abuderixiti Abulikemu,Jie Zhao,Biao Wu
A new chitosan based colorimetric anion receptor bearing nitrophenyl as a chromogenic signal group, and urea moiety as recognition site was designed and synthesized. The receptor structure was characterized by FTIR and 1H NMR. The sensing abilities of the receptor for anions were investigated with UV-vis methods. During the addition of PO43− and F− anions, the sensor responded with a dramatic color change, and no change was observed in the presence of other anions. The UV-vis absorption titration data showed that the receptor shows selective recognition and sensing in DMSO-H2O (1%) for PO43− and F− anions. The Job's curve showed that 3 : 2 stoichiometry complexes were formed between the receptor and the anion.
研究领域:
生物化学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
ChemistrySelect
·
2023
·Vol. 8
·期 12
·e202204658
·
IF 2.1
Dawei Zhang,Chang Liu,Lu Ren,Wenyu Li,Boyi Luan,Yumin Zhang
Graphical An efficient synthesis of 3-methyl-4-(arylmethylene)isoxazol-5(4 H )-ones are developed via cyclocondensation in 84–94 % yields starting from aromatic aldehydes, hydroxylamine with ethyl acetoacetate vitamin B 1 is catalyzed under ultrasound-assisted. The reaction has simple operation, metal-free catalysis, acid or base free catalysis. As a green catalyst, vitamin B 1 is found to possess favorable catalytic activity and reusability for the condensation reaction. An efficient synthesis of 3-methyl-4-(arylmethylene)isoxazol-5(4 H )-ones are developed via cyclocondensation in 84–94 % yields starting from aromatic aldehydes, hydroxylamine with ethyl acetoacetate vitamin B 1 is catalyzed under ultrasound radiation, and are characterized by HR-MS, FT-IR and 1 H and 13 C NMR spectroscopy. The reaction has simple operation, metal-free catalysis, acid or base free catalysis. As a green catalyst, vitamin B 1 is found to possess favorable catalytic activity and reusability for the condensation reaction. 5-(2-Hydroxy-3-methoxybenzylidene)-3-methylisoxazol-5(4 H )-one as a metal ion fluorescent probe, has excellent selectivity to Sr 2+ and exhibits obvious discoloration. Fe 2+ quenches the fluorescence of the ligand 3-methyl-4-(2,3,4-trihydroxybenzylidene)isoxazol-5(4 H )-one, and exhibits an obvious color change.
研究领域:
有机化学
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分析化学
·
药物化学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Shiyu Sun,Xin Huang,Jingtao Bi,Na Wang,Ting Wang,Lina Zhou,Li Wang,Shyam Lamichhane,Hongxun Hao
Titanate has been used to absorb heavy metal ions in wastewater. However, the selective adsorption driven by ion recognition remains a challenging task. In this paper, bidirectional layer spacing regulated titanate nanofilms were developed and the mechanism of layer spacing enhanced ion recognition was systematically studied. TEM, SEM, XRD, XPS, FTIR and BET were used to characterize and analyze the obtained titanate nanofilms, and the results showed that the adsorbent was successfully synthesized and the layer spacing of these nanofilms can be bidirectionally regulated. The adsorption kinetics and adsorption isotherm indicated a positive correlation between the layer spacing of titanate nanofilms and the ion recognition. DFT calculations and Bader program analysis were used to investigate the adsorption process of titanate nanofilms with different layer spacing. It can be concluded that the affinity between adsorbent and specific adsorbate and the electron transfer value on the titanate surface could be regulated by changing the layer spacing of titanate nanofilms, resulting in the enhanced ion recognition performance. Finally, an ion recognition mechanism was proposed based on the above experimental and calculative results.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）