一种新颖1D链状聚合物[Ni(acac)2(dadpm)]∞的合成与晶体结构

The title compound [Ni(acac)₂(dadpm)]_∞ (acac=acetylacetonate, dadpm=4,4′-diaminodiphenylmethane) was synthesized from Ni(acac)₂·2H₂O with dadpm in DMF. The structure was characterized by elemental analysis, IR spectroscopy, thermal analysis and single-crystal X-ray diffraction. X-ray analysis revealed that the central Ni atom is at a center of symmetry, and is octahedrally coordinated by four O atoms from two acac anions and two N atoms from two dadpm ligands. Each dadpm ligand, which has a two-fold axis passing through its methylene C atom, bridges two Ni atoms to form a 1D polymeric chain. Neighboring chains connect via H bonding interactions to generate a 2D network. It crystallizes in the monoclinic system, space group P2/c with a=0.556 79(7), b=0.896 06(12), c=2.187 3(3) nm, β=94.942(3)°, V=1.087 2(3) nm³, Z=2, D_c=1.390 g·cm^-3, F(000)=480, M_r=455.17, μ(Mo Kα)=0.924 mm^-1, R(F)=0.036 0, wR(F²)=0.101 0, S=1.013. CCDC: 254565.     

胶束体系中光敏聚合的研究 Ⅵ．水溶性高分子／表面活性剂复合体系中光敏聚合反应

研究了水溶性高分子与三种表现活性剂组成的复合作用体系（ＰＡＡ－ＡＭ／ＣＴＡＢ，ＰＡＡ－ＡＭ／ＳＤＳ和ＰＡＡ－ＡＭ／ＴｒｉｔｏｎＸ－１００）中的光敏聚合反应，应用芘做荧光探针，跟踪检测在稀水溶液中分子复合和聚集的过程和微微环境特性，结果表明，由水溶性高分子／表面活性剂形成的分子聚集体，具有胶束类似的催化作用，它和胶束相经，具有更高的分子聚集能力和热力学稳定性，罗大的局部粘度和极性，因而对二苯酮／三乙     

对苯二酚在多壁碳纳米管修饰电极上的电化学行为研究

采用循环伏安法、微分脉冲伏安法、计时安培法研究了对苯二酚在多壁碳纳米管修饰电极上的电化学行为,计算得到了碳纳米管修饰电极有效面积Aeff=23.9mm2以及对苯二酚电化学氧化过程的一些重要参数:传递系数α=0.630;控制步骤的反应电子数nα=1.03;反应速率常数k′=3.74×10-2cm/s;扩散系数D=2.85×10-6cm2/s。实验结果显示,本实验条件下对苯二酚在碳纳米管修饰电极上的氧化反应受扩散过程控制,为前行化学反应(CE),对苯二酚在失去电子之前先经历了一个脱氢的过程。微分脉冲伏安结果显示,催化氧化峰电流与对苯二酚浓度在1×10-4~6×10-6mol/L范围内呈良好的线性关系,检出限达4.0×10-7mol/L(S/N=3)。     

胶束体系中光敏聚合的研究 Ⅵ．水溶性高分子／表面活性剂复合体系中光敏聚合反应

研究了水溶性高分子与三种表面活性剂组成的复合作用体系（ＰＡＡ—ＡＭ／ＣＴＡＢ，ＰＡＡ—ＡＭ／ＳＤＳ和ＰＡＡ－ＡＭ／ＴｒｉｔｏｎＸ－１００）中的光敏聚合反应．应用芘做荧光探针，跟踪检测在稀水溶液中分子复合和聚集的过程和微环境特性．结果表明，由水溶性高分子／表面活性剂形成的分子聚集体，具有胶束类似的催化作用，它和胶束相比，具有更高的分子聚集能力和热力学稳定性，较大的局部粘度和极性，因而对二苯酮／三乙胺引发ＭＭＡ光聚合具有更为显著的催化效果，使聚合速度大幅度增加．     

四苯硼钠在活性炭表面吸附过程的疏水相互作用

In this paper, the adsorption characteristics of sodium tetraphenylborate(NaBPh4) on activated carbon at 298.2,303.2,308.2,313..2 and 323.2 K was studied.The results show that the adsorption isotherm of NaBPh4 on activated carbon at different temperatures could be described using Langrnuir equation. Furthermore, the standard Gibbs energy, enthalpy, entropy and hydrophobic interaction Gibbs energy for the adsorption of NaBPh4 on activated carbon were studied, and the result shows that the hydrophobic interaction of BPh4^- ion plays the most important role for the transfer of NaBPh4 from water to activated carbon surface.     

A 4×4 metal-semiconductor-metal rectangular deep-ultraviolet detector array of Ga2O3 photoconductor with high photo response

A 4$\times $4 beta-phase gallium oxide ($\beta $-Ga$_{2}$O$_{3}$) deep-ultraviolet (DUV) rectangular 10-fingers interdigital metal-semiconductor-metal (MSM) photodetector array of high photo responsivity is introduced. The Ga$_{2}$O$_{3}$ thin film is prepared through the metalorganic chemical vapor deposition technique, then used to construct the photodetector array via photolithography, lift-off, and ion beam sputtering methods. The one photodetector cell shows dark current of 1.94 pA, photo-to-dark current ratio of 6$\times $10$^{7}$, photo responsivity of 634.15 A$\cdot$W$^{-1}$, specific detectivity of 5.93$\times $10$^{11}$ cm$\cdot$Hz$^{1/2}\cdot$W$^{-1}$ (Jones), external quantum efficiency of 310000%, and linear dynamic region of 108.94 dB, indicating high performances for DUV photo detection. Furthermore, the 16-cell photodetector array displays uniform performances with decent deviation of 19.6% for photo responsivity.     

手性聚合物在不对称催化反应中的新进展

综述了近几年来手性聚合物催化剂在不对称烷基化反应，双羟基化反应中的应用，并对该类催化剂的设计作了分析和总结，系统地讨论了催化剂的结构与性能的关系，参考文献31篇。     

Nucleonic ~1S_0 Superfluidity Induced by a Soft Pion in Neutron Star Matter with Antikaon Condensations

The nucleonic ~1S_0 superfluidity is investigated by solving the gap equation for the Reid soft-core potential as the nucleon-nucleon interaction in neutron star(NS) matter which is considered to be made up of p, e, μ and condensed antikaon matter. We mainly study the influence of the soft pion-induced potential on the nucleonic~1S_0 pairing gaps in the above NS matter. It is found that the intensities of the nucleonic ~1S_0 pairing gaps including the soft pion-induced potential are smaller than those calculated in the case of not including the soft pion-induced potential. Furthermore, the nucleonic ~1S_0 pairing gaps with the soft pion-induced potential fall into decline with the deepening of the optical potential of antikaons in the above NS matter, whereas they increase with the parameter η for the fixed optical potential of antikaons. Due to the appearance of the soft pion-induced potential, the maximum values of nucleonic ~1S_0 pairing gaps at parameter η = 0.20,0.55 are suppressed by1.7%-6.8% with respect to the case without soft pion-induced potential in the above NS matter.     

光敏型阴离子表面活性剂的合成及表面性能

本文制备了一种含有偶氮苯基团的阴离子表面活性剂,其表面活性及对方解石矿物的润湿性能,可以用紫外光照射进行调控。在紫外光照射后,表面活性剂的临界胶束浓度(cmc)、最低表面张力(γcmc)、分子极限占有面积(Amin)增大,饱和吸附量(Гmax)和降低表面张力的效率(pC20)降低,对方解石的润湿能力增强。