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RAPID AND FACILE SYNTHESIS OF ACYL AZIDES FROM ACYL HALIDES USING A POLYMER-SUPPORTED AZIDE ION UNDER HETEROGENEOUS CONDITIONS

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Chinese Journal of Polymer Science 2013年第7期31卷 1002-1010页

作者： Mohammad Ali Karimi Zarchi Saeed Barani department of chemistry College of SciencesYazd University

In this article a rapid and facile method for synthesis of acyl azide is described. The cross-linked poly（N-methyl-4- vinylpyridinium） azide ion, [Pa-VP]N3 is prepared and used as an efficient polymeric reagent for synthesis of acyl azides from acyl halides at room temperature under heterogeneous conditions. Various benzoyl halides, with electron-withdrawing groups as well as electron-donating groups, were transformed into the corresponding benzoyl azides in high to excellent yields in short reaction times. The acyl azide products were characterized by FT-IR, and some of them were also characterized by IH- and/or 13C-NMR spectroscopy, and physical properties were compared to literature values of known compounds. The spent polymeric reagents can be regenerated and reused for several times without losing their activity. Relative to the reported methods, the present method has the advantages of operational simplicity, mild reaction conditions, fast reaction rates, simple reaction work-up and lower hazardous and potentially explosive nature. Also the present method is the first procedure for the synthesis of acyl azides from acyl halides by using a polymer-supported azide ion under heterogeneous conditions.

关键词： Acyl azide Acyl halide Polymeric reagent Heterogeneous condition.

TiO_2-loaded activated carbon fiber:Hydrothermal synthesis,adsorption properties and photo catalytic activity under visible light irradiation

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Particuology 2014年第3期12卷 38-43页

作者： Hao Meng Wei Hou Xinxin Xu Junli Xu Xia Zhang department of chemistry College of ScienceNortheastern University

TiO2-loaded activated carbon fibers （ACF） were prepared by a hydrothermal method. The samples were characterized by scanning electron microscopy （SEM）, X-ray diffraction （XRD）, Fourier transform infrared （FTIR） spectrometry and UV-vis diffuse reflectance spectra （DRS）. SEM images showed that the TiO2 nanoparticles were deposited on the surface of ACF, and the particle size and loading amount of TiO2 were varied by changing the initial concentration of tetrabutyl titanate （TBOT）. The results of an ash experiment showed that the loading amounts of TiO2 were 18.4%, 43.3%, 52.5%, 75.1%, and 91.1% for initial concentrations of TBOT of 0.07,014, 0.21,0.28, and 0.35 tool/L, respectively, Physical interactions played an important role in the formation of TiO2/ACF composite fibers that absorb UV and visible light. Compared with those of ACF, improved adsorption and photocatalytic activity toward Rhodamine B （RhB） were observed for TiO2/ACF composite fiber. The Rhodamine B could be removed efficiently by TiO2/ACF composite fibers, and the TiO2 loading amount had a significant effect on the photocatalytic activity of TiO2/ACF composite fibers.

关键词： Activated carbon fiber (ACF) TiO2 nanoparticles Adsorption property Photocatalytic activity Hydrothermal synthesis

一种基于偶氮键一级断裂与C–C键二级断裂释放药物的β-lapachone高分子纳米前药用于肿瘤选择性治疗（英文）

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Science China Materials 2025年

作者：赵唯栋郑梦飞褚虹宇张景宣王昆杨晨光沈娜汤朝晖 Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied Chemistry Chinese Academy of Sciences School of Applied chemistry and Engineering University of Science and Technology of China department of Gastrointestinal Colorectal and Anal Surgery China-Japan Union Hospital of Jilin University department of Pathogenbiology State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases College of Basic Medicine Jilin University

lapachone (β-Lap)是一种极具潜力的邻萘醌类抗肿瘤药物,但β-Lap临床应用受限于低水溶性和严重的毒副作用.前药修饰策略可有效增强药物的肿瘤选择性,但β-Lap受限于缺乏可修饰基团.本文设计了一种新型偶氮键一级断裂和碳碳键(C–C)二...

lapachone (β-Lap)是一种极具潜力的邻萘醌类抗肿瘤药物,但β-Lap临床应用受限于低水溶性和严重的毒副作用.前药修饰策略可有效增强药物的肿瘤选择性,但β-Lap受限于缺乏可修饰基团.本文设计了一种新型偶氮键一级断裂和碳碳键(C–C)二级断裂的β-Lap高分子纳米前药(Azo-Lap NP),自消除的对氨基苯基连接子通过偶氮键连接聚谷氨酸,在高表达NQO1和低pH的肿瘤环境下,实现肿瘤响应性β-Lap释放. Azo-Lap NPs对β-Lap的有效共价负载可显著提高β-Lap的给药剂量,并延长药物的肿瘤停留时间.此外, Azo-Lap NPs通过避免溶血和高铁血红蛋白的产生显著降低β-Lap的毒副作用.通过小鼠抑瘤实验验证了Azo-Lap NPs安全性.在4T1模型中, Azo-Lap NPs组的抑瘤率明显高于β-Lap组.本研究为肿瘤选择性递送β-Lap提供了一种更有效且安全的高分子纳米前药.

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Preparation and Characterization of Poly(amide-imide)/ZnO Nanocomposites Containing Pendent Benzoxazole and Benzimidazole Segments

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Chinese Journal of Polymer Science 2016年第3期34卷 288-297页

作者： Hojjat Toiserkani department of chemistry College of Sciences and College of Oil Engineering Hormozgan University

In the present investigation, novel poly（amid-imide）/zinc oxide nanocomposites（PAI/Zn O NCs） containing benzoxazole and benzimidazole pendent groups with different amounts of modified zinc oxide nanoparticles（Zn O NPs） were successfully prepared via the ex situ method. Poly（amid-imide）（PAI） was prepared by direct polycondensation of 2-[3,5-bis（N-trimellitimidoyl）phenyl]benzoxazole（DCA） with 5-（2-benzimidazole）-1,3-phenylenediamine（DAMI） and provided the polymeric matrix with well-designed groups. The surface of Zn O NPs was functionalized with 3-aminopropyltriethoxysilane（APS） coupling agent to have a better dispersion and enhancing possible interactions of NPs with functional groups of polymer matrix. The amount of APS bonded to the Zn O surface was determined by thermogravimetric analysis. PAI/Zn O nanocomposites were characterized by Fourier transform infrared spectroscopy（FTIR）, X-ray diffraction（XRD）, and scanning electron microscopy（SEM）. SEM analysis showed that the modified Zn O nanoparticles were homogeneously dispersed in polymer matrix. In addition, TGA data indicated an enhancement of thermal stability of the nanocomposite compared with the neat polymer.

关键词： Poly(amide-imide) ZnO nanoparticles Nanocomposites Surface modification Pendent group

Room Temperature Ferromagnetism in Dual Doped (Mn^(2+), Ni^(2+)) ZnO Codoped with Li^(1+) Prepared Using EDTA Sintered at Low Temperature

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Journal of Materials Science & Technology 2014年第3期30卷 275-279页

作者： R.Pugaze A.Sivagamasundari D.Vanidha S.Chandrasekar A.Arunkumar S.Rajagopan R.Kannan department of Physics Pondicherry Engineering College department of chemistry Pondicherry Engineering College

Nanopowders of Znl_x_y_zMnxNiyLizO [（x = 0.04, y = 0, z = 0）, （x = 0.04, y = 0.03, z = 0） and （x = 0.04, y = 0.03, z = 0.03）] have been synthesized by sol-gel precursor route using ethylene diamine tetraacetic acid （EDTA） as a metal chelating agent. X-ray diffraction analysis confirms the formation of wurtzite hexagonal structure for all the three compositions. Mn2＋ doped ZnO exhibits room temperature ferromagnetism （RTFM）, and it is found that further Ni2＋ doping has decreased Ms because of limit of solid solubility of transition metal in ZnO. But codoping of monovalent Li1＋, further increases the ferromagnetism （FM） value, due to introduction of free carriers compared to the dual doped samples. Photoluminescence （PL） spectra of the system, exhibit near band edge （NBE） emission peak at --464 nm due to the electron transition from interstitials to the valence band. Recombination of conduction electron with hole trapped at oxygen vacancy, leads to prominent defect emission peaks at --482 nm and 532 nm. The evidence of the formation of metaI-EDTA complexes are found from the Fourier transform infrared spectra at 2800-3800 cm-1 with shifting, splitting of the peak and also drastic variations in the intensity.

关键词： Mn-doped Dual doped Li codoped Ferromagnetism Photoluminescence Fourier transform infrared (FTIR) spectroscopy

A New Chain-like Copper(Ⅱ) Polymer:[Cu(MOPIP)(BDC)]_n·0.5n(H_2O)

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Chinese Journal of Structural chemistry 2008年第10期27卷 1195-1198页

作者：刘博周实李秀梅李传碧 department of chemistry Jilin Normal University department of chemistry Tonghua Teachers CollegeTonghua

A metal-organic coordination compound formulated as [Cu（MOPIP）（BDC）]n·0.5n（H2O） 1 （MOPIP - 2-（4-methoxyphenyl）-1H-imidazo[4,5-f][1,10] phenanthroline, BDC = 1,4-benze Nedicarboxylate） has been hydrothermally synthesized and structurally characterized by elemental analysis, thermogravimetric analysis, IR spectrum, and single-crystal X-ray diffraction. The title compound crystallizes in the triclinic system, space group P1^-, with a = 8.872（5）, b = 11.163（6）, c = 12.589（6）A, α = 94.687（7）, β = 99.930（6）, γ = 103.074（7）°, V = 1186.7（12）A^3, C28H19CuN4O5.5, Mr= 563.01, Dc = 1.576 g/cm^3,μ（MoKa） = 0.973 mm^-1, F（000） = 576, Z = 2, the final R = 0.0607 and wR = 0.1618 for 3419 observed reflections （I 〉 2σ（I））.

关键词： copper compound crystal structure MOPIP

Synthesis,structural and optical properties of SrZrO_3:Eu^(3+) phosphor

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Journal of Rare Earths 2014年第4期32卷 293-297页

作者： Sheetal V.B.Taxak Rajni Arora Dayawati S.P.Khatkar department of chemistry Maharshi Dayanand University department of chemistry Government Post Graduate College

Eu3＋activated Sr1-xEuxZrO3 （x=0.01-0.04） phosphor with perovskite structure was successfully synthesized by using com-bustion method. The structure, morphology and optical properties of the material were characterized by X-ray diffraction, scanning electron microscopy and fluorescence spectrometry. The XRD results indicated that crystals of SrZrO3：Eu3＋belongs to tetragonal perovskite system. The phosphor could be effectively excited by UV light and the emission spectra results indicated that red-dish-orange luminescence of SrZrO3：Eu3＋due to magnetic dipole transition 5D0→7F1 at 593 nm was dominant. Thus, the prepared phosphor showed remarkable luminescent properties which find applications in field emission display （FED） and plasma display panel （PDP） devices.

关键词： perovskite europium optical materials luminescence rare earths

Aromatic chloroosmacyclopentatrienes

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National Science Review 2023年第3期10卷 163-168页

作者： Zhenwei Chu Guomei He Chuan Shi Yuhui Hua Yaxi Huang Jiangxi Chen Hujun Xie Guochen Jia department of Materials Science and Engineering College of Materials Xiamen University department of chemistry The Hong Kong University of Science and Technology department of chemistry College of Chemistry and Chemical EngineeringXiamen University department of Applied chemistry Zhejiang Gongshang University

Aromatic metallacycles are of considerable current *** aromatic metallacycles are mainly those with carbon,nitrogen,oxygen and *** this work,we report the synthesis and characterization of aromatic chloroosmacyclopentatrienes,which represent the first structurally confirmed metallaaromatic with a chlorine atom in its ***-crystal X-ray diffraction studies show that these planar chloroosmacyclopentatrienes possess a very short Os-CIC distance suggesting M=CIC bond character.

关键词： metallacycles chlorometallacyclopentatriene osmium o-ethynylphenyl alkynes halocarbon complex

Synthesis of new Tb-doped Zn-Al LDH/tryptophan hybrids and their fluorescent property

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Journal of Rare Earths 2016年第11期34卷 1095-1102页

作者：陈玉凤王肖庆罗世地鲍垚 college of chemistry Nanchang University department of Applied chemistry Guangdong Ocean University

A series of hybrids based on Tb-doped Zn-Al layered double hydroxides （Tb-LDHs） combined with tryptophan （hereafter shortened as Try） were synthesized by soft-chemical method. The composition, structure, and fluorescence of the Tb-LDH/Try hy-brids were analyzed by various characterizations. Compositional analysis indicated that the content of tryptophan present in the hybrids gradually increased while the Tb-LDH reacted with 0.05, 0.1, and 0.25 mol/L Try solution, respectively. XRD results revealed that new reflections appeared in the Tb-LDH/Try hybrids. TGA curves of the Tb-LDH/Try hybrids were different from that of Tb-LDH and Try. IR spectra manifested that the IR spectra of the hybrids were characteristic of the Try and Tb-LDH. Fluorescent spectra sug-gested that the green emission due to5D4→7F5 transition of Tb3＋ greatly decreased but not quenched, and the emission attributed to Try obviously increased. Meanwhile the fluorescent spectra of Tb-LDH/Try hybrids presented broad continuous bands in visible region.

关键词： Tb-doping Zn-Al layered hydroxides tryptophan hybrid fluorescence rare earths