Synthesis and Nonlinear Optical Property of a Polyphosphazene with High Glass Transition Temperature

A new polyphosphazene containing binaphtholyl and indole azo chromophores as side chains with high glass transition temperature ( Tg ) was synthesized by a post-functional method. The polymer was well characterized. Its Tg was tested to be 168℃, and the poled film of P2 reveals a resonant d33 value of 20 pm/V by second harmonic generation ( SHG ) measurements.

Synthesis and Structural Characterization of a Polyphosphazeneas Photoconductivc Material

The synthesis of a novel polyorganophosphazene that contains charge-transporting agent as side chains for photoconductive application is reported. Structural characterization for the high polymer was presented by 1H-NMR, infrared spectrosocopy, gel permeation chromatography (GPC).

Two Novel Homochiral Enantiomorphic 3D Metal-organic Frameworks:Synthesis,Crystal Structure,Luminescent and SHG Properties

Two homochiral enantiomorphic 3D coordination polymers： （D-HAPA）2[Cd2Cs（D- HAPA）（m-BDC）4]＇（EtOH） （1D） and （L-HAPA）2[Cd2Cs（L-HAPA）（m-BDC）a]＇（EtOH） （1L） （APA = 2-amino-l-propanol, m-H2BDC = 1,3-benzenedicarboxylate）, have been assembled solvothermally respectively with the induction of enantiomorphic organic small molecules （D,L-APA）. 1L and 1I） crystallize in chiral space group P21 with Flack parameters of-0.012（13） and -0.07（3）, respectively, and have been characterized by satisfactory elemental analysis, FT-IR spectra, CD-spectra and single-crystal X-ray diffraction. They both exhibit sqp topological net, purple fluorescence and SHG activity.

Synthesis of Polyphosphazene with Pendent Perfluorobutylsulfonylimide Group

A new polyphosphazene with perfluorobutylsulfonylimide as a pendent group has been prepared. The structure of the polymer and its properties were characterized by 1^H NMR, 19^F NMR, IR spectra, gel permeation chromatography, and thermogravimetric analysis.

Ag4Hg（SeO3）2（SeO4）: a novel SHG material created in mixed valent selenium oxides by in situ synthesis

Explorations of new second harmonic generation materials in Ag^+-Hg^2+/Bi^3+-selenites systems afforded three new silver selenium oxides, namely, Ag4 Hg(SeO3)2(SeO4)(1), Ag2Bi2(SeO3)3(SeO4)(2) and Ag5 Bi(SeO3)4(3). They exhibit flexible crystal chemistry. Compounds 1 and 2 are mixed valence selenium oxides containing Se(IV) and Se(VI) cations simultaneously. Compounds 1 and 3 exhibit a 3 D open framework with 4-, 6-and 8-member polyhedral ring tunnels along a, b and c axes. Compound 1 crystallized in a polar space group and could display a subtle frequency doubling efficiency about 35% of the commercial KH2PO4(KDP). UV-vis-NIR spectra reveal that compounds 1–3 are wide-band semiconductors with the optical bandgaps of 3.11, 3.65, 3.58 e V respectively. Theoretical calculations disclose that compounds2 and 3 are indirect band gap structures and their bandgaps are determined by Ag, Bi, Se and O atoms together.

In situ[2+3] cycloaddition synthesis,crystal structures,strong SHG responses and fluorescence properties of three novel Zn coordination polymers

We report on the synthesis of two acentric and one centrosymmetric Zn metal-organic complexes with 3-tetrazolenethyl pyridine spacers obtained in situ by hydrothermal routes.X-ray diffraction structural analysis reveals that they have the same equivalent nodes but with dissimilar topologies.The two acentric frameworks[Zn(Tzmp)Cl]n(1)and([Zn(Tzmp)Br]n(2),HTzmp=3-tetrazolemethyl pyridine)are isomorphism which exhibit an acentric 3D framework with(10,3)-b net called"ths",while the centro symmetric complex([Zn(Tzmp)N3]n(3))features a distinctive 2D sheet with Shubnikov hexagonal plane net.Photo-luminescent studies suggest the ligand-field strength of coordinated negative ions(Cl^->Br^->N3^-)has ordered adjusting effects on the emission redshift.The second harmonic generation(SHG)measurement shows that compounds 1 and 2 are nonlinear optically active,with SHG responses being 2/3 and half of the standard potassium dihvdrogen phosphate(KDP),respectively.

A New Approach to C60-Containing Polyphosphazenes by Polymerization of Phosphonitrile Chloride Trimer in the Presence of C60

A novel synthetic strategy was developed to prepare polyphosphazenes containing C60 moieties. Thus, the phosphonitrile chloride trimer underwent thermal ring-opening polymerization （ROP） in the presence of C60 molecules to yield the reactive macromolecular intermediate, C60-containing poly（dichlorophosphazene）. And then, the other groups could be linked to the phosphazene backbone by nucleophilic substitution reaction of the chlorine atoms in this intermediate to produce a series of C60-containing polyphosphazene. The polymer exhibits good solubility in common organic solvents and is thermally stable.

A New Synthetic Strategy to Prepare a Polyphosphazene with Charge-Transporting Agents and Nonlinear Optical Chromophores as Side Chains

A new strategy, a post coupling method to develop the polyphosphazene (P2) functionalized with carbazolyl groups and nonlinear optical (NLO) chromophores, has been explored. P2 exhibits good solubility in common organic solvents. The poled film of P2 exhibits a resonant d 33 value of 42 pm/V by second harmonic generation (SHG) measurements.

聚磷腈的研究进展

介绍了聚磷腈主要的合成方法,如开环聚合、小分子单体直接聚合和室温可控聚合,综述了聚磷腈在生物医学材料、固体聚合物电解质材料、光学材料、膜材料和防火阻燃材料等主要应用领域的研究进展,并展望了其发展前景。

聚磷腈高分子

简要综述了聚磷腈高分子的合成、结构与物理性能及在新型功能材料方面的应用 ,包括高分子电解质、光导电材料、非线性光学材料以及生物医用材料。

高热稳定性聚膦腈亚微米球的室温快速合成

以六氯环三膦腈(HCCP)和4,4′-二羟基二苯砜(BPS)为共缩聚单体,乙腈为溶剂,三乙胺为缚酸剂,在室温条件下,采用沉淀聚合的方法快速合成了一种聚膦腈亚微米球。红外光谱、元素分析及X射线能谱分析(EDX)测试表明,该聚膦腈亚微米球具有高度交联的化学结构;扫描电子显微镜和透射电子显微镜测试表明,该聚膦腈亚微米球粒径分布在410 nm附近,而且具有光滑的表面和实心的结构;热重分析(TGA)测试表明,该聚膦腈亚微米球的热分解温度达到531℃。并推测了该聚膦腈亚微米球的形成机理。

线型聚磷腈的合成及其应用研究进展

综述线型聚磷腈国内外的研究进展,总结线型聚磷腈的合成方法以及在防火阻燃材料、药物及生物医学材料和高分子膜材料方面的应用,针对聚磷腈高分子材料的前景进行了展望。

聚磷腈合成的研究进展

综述了近年来聚磷腈合成的研究进展。在回顾聚磷腈的主要合成方法的基础上，介绍了出现的室温活性正离子聚合及本实验室利用卤化磷腈与五配位硅络合物反应所取得的一些结果。

可生物降解聚膦腈的合成研究进展

在简要介绍可生物降解聚膦腈分类的基础上,综述了氨基取代、烃氧基取代、多官能团亲核试剂取代和侧链衍生化合成的单一取代聚膦腈的合成研究进展,总结了合成混合取代聚膦腈的目的和方法,简述了影响混合取代聚膦腈合成反应的因素和共混或共聚聚膦腈的合成研究概况。

聚磷腈的合成化学

聚磷腈是一类骨架由磷 -氮原子交替排列侧链键合各种取代基团且具有广泛应用的新型高分子化合物。本文介绍了磷腈聚合物的现状和发展 ,重点论述了聚磷腈的合成方法。

几种席夫碱化合物的室温固相合成及二阶非线性光学性质的理论计算

以对乙酰苯胺和6种单取代基苯甲醛为原料,通过室温固相反应合成了6个席夫碱类化合物,用元素分析1、HNMR确定了产物的结构,并对产物做了定性SHG响应以及固体紫外反射光谱的测试。利用密度泛函理论的B3LYP方法,在6-31G水平上对6种化合物进行几何结构优化,在获得稳定构型的基础上,用TDHF/6-31G方法计算了它们的分子二阶非线性光学系数β值。

二苯基戊二烯酮类化合物的合成及倍频性质研究

合成了十八个二苯基戊二烯酮类化合物，并对其进行了一系列性质测试，包括红外、紫外、核磁共振、粉末Ｘ衍射、光声光谱及倍频性质等。研究结果表明该类化合物中绝大部分具有很强的粉末倍频效应和较短的光吸收截止波长，是迄今为止发现的较为理想的倍频材料之一。

一类新型非线性光学材料——二苯甲酮衍生物的合成及性能研究

为寻求新型、高效、优质倍频材料,我们合成了一类新型二苯甲酮类化合物,并对其红外、紫外、光声光谱及倍频性能进行了系列研究,发现二苯甲酮类化合物具有较强的倍频效率和较短的截止吸收波长,有着广泛的应用前景。

聚磷腈化合物的应用研究

本文介绍了聚磷腈化合物的一些基本特性、应用和几种聚磷腈化合物的合成。

具有乙氧羰苯氧基、乙氧基吡咯烷酮和甲氧基乙氧基乙氧基侧链聚膦腈的合成和降解性能

通过线性聚二氯膦腈(PDCP)的大分子亲核取代反应,合成了两个新的具有不同比例4-乙氧羰苯氧基、乙氧基吡咯烷酮和甲氧基乙氧基乙氧基侧基的聚膦腈,并用31P NMR、1H NMR、IR和元素分析表征了它们的结构。分别用DSC和蒸汽压渗透法(VPO)测定了它们的玻璃化转变温度Tg和数均分子量。两个新聚膦腈的体外降解实验和降解产物的定性分析结果表明,亲脂性的乙氧羰苯氧基含量越高,聚膦腈的降解速度越慢。两个聚膦腈在不同缓冲溶液中的降解从快到慢的次序为pH 5.0>pH 7.4>pH 8.0。它们的降解是侧链首先断裂,然后才是骨架的裂解。