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Zhu F.,Jiangsu Key Laboratory for Chemistry of Low Dimensional Materials | Zhu F.,Huaiyin Normal University | Zhou J.,Jiangsu Key Laboratory for Chemistry of Low Dimensional Materials | Zhou J.,Huaiyin Normal University | And 3 more authors.
Cuihua Xuebao/Chinese Journal of Catalysis | Year: 2012

A novel periodic mesoporous Au(I) organometalsilica as an active and reusable catalyst for alkyne hydration reaction was synthesized by co-condensation of phenyl silane and organometal bridged silane. Compared with the Au-PPh 2-PMO(Ph)-G prepared by the grafting method, the Au-PPh 2-PMO(Ph) catalyst showed high dispersion of Au(I) active sites, straightway mesopore channels, and the reduced diffusion limit. During the hydration of terminal alkynes, the Au-PPh 2-PMO(Ph) catalyst not only exhibited higher catalytic efficiency than the un-immobilized Au(PPh 3)Cl catalyst but also could be used repetitively, showing good potential in industrial application.

Shen G.-P.,Nanjing University of Technology | Zhao J.,Nanjing University of Technology | Chen L.,Nanjing University of Technology | Sun F.,Nanjing University of Technology | And 4 more authors.
Chinese Journal of Inorganic Chemistry | Year: 2012

A mononuclear manganese(II) complex, trans-[MnL 2(NCS) 2] (L=3-(p-methoxyphenyl)-4-(p-chlorophenyl) -5-(2-pyridyl)-1,2,4-triazole), was synthesized and characterized by FTIR, ESI-MS, TG and X-ray crystallography, The complex crystallizes in monoclinic system with space group P2 1/c, a=1.458 5(3) nm, b=0.915 00(18) nm, c = 1.616 3(3) nm, β=101.70(3)°, V=2.112 2(7) nm 3, Z=2, and final R 1=0.058 5. The manganese atom lies in a distorted octahedral environment with two NCS ions in the trans positions. The ligand L coordinates via one triazole nitrogen and one pyridine nitrogen atom. The TG analysis shows that the complex is stable below 260 °C. Magnetic data show that the complex is paramagnetic in the range of 1.8~300 K. CCDC: 833359.

Lv J.-S.,Huaiyin Normal University | Lv J.-S.,Jiangsu Key Laboratory for Chemistry of Low Dimensional Materials | Shen T.-T.,Huaiyin Normal University | Nie L.,Huaiyin Normal University
Advanced Materials Research | Year: 2012

In order to investigate the characterizations of skin adsorption material (SAD) prepared from skin of corn stalks by High Boiling Solvent treatment, neutral proteinase and maltogenic amylase were selected as adsorbate to assess its potential applicability for enzyme immobilization. The structure of SAD and Skin were compared by FT-IR and XRD. The characterizations of the adsorption of the different enzymes onto SAD were studied. The isotherm of the maltogenic amylase was found to be linear with the Freundlich equation, and proteinase was found to be linear with the Langmuir equation in the studied concentration range. SAD could be applied the bio-active material and Skin to prepare SAD. © (2012) Trans Tech Publications, Switzerland.

Qiu F.,Jiangsu University | Qiu F.,Jiangsu Key Laboratory for Chemistry of Low Dimensional Materials | Liu J.,Jiangsu University | Cao G.,Jiangsu University | And 4 more authors.
Optics Communications | Year: 2013

A Y-branched digital optical switch (DOS) based on silicon substrate was proposed using the thermo-optic effect of polymer material and the performance of the switch was simulated. An analytical steady-state heat-conduction model is also presented. In the design, one heating electrode is used to alter the refractive index in the multimode slab region to realize the switching function. With branching angle of 0.143° and using finite difference beam propagation method (FD-BPM), the experiment results show that the switch has a low switching power of less than 1.04 mW, and the response time of the switch 3.5 ms, respectively. © 2013 Elsevier B.V. All rights reserved.

Ye F.,Jiangsu University | Qiu F.,Jiangsu University | Qiu F.,Jiangsu Key Laboratory for Chemistry of Low Dimensional Materials | Yang D.,Jiangsu University | And 3 more authors.
Optics and Laser Technology | Year: 2013

A chiral azo chromophore compound 4-(4′-nitro-phenyl-diazenyl)- phenyl-1,2-propanediol ether (NPDPPE) was prepared with p-nitroaniline, phenol and R(-)-3-chloro-1,2-propanediol by the diazo-coupling reaction. Then, the chromophore molecule NPDPPE was polymerized with isophorone diisocyanate (IPDI) to obtain novel chiral azobenzene-containing polyurethane (CACPU). The chemical structures of chromophore molecule and CACPU were characterized by the FT-IR and UV-visible spectroscopy. The physical properties (thermal conductivity, thermal diffusion coefficient, and specific heat capacity) and mechanical properties (tensile strength, elongation at break and hardness) of CACPU thin films were measured. The refractive index and thermo-optic (TO) coefficient (dn/dT) of CACPU thin film was investigated for TE (transversal electric) polarizations by using an attenuated total reflection (ATR) configuration at the wavelengths of 532, 650 and 850 nm. The transmission loss of film was measured using the charge coupled device (CCD) digital imaging devices. A Y-branch switch and Mach-Zehnder interferometer (MZI) thermo-optic switches based on thermo-optic effect were proposed and the performances of switches were simulated. The results showed that the power consumption of the Y-branch thermo-optic switch was only 3.28 mW. The rising and falling times of Y-branch and MZI switches were 12.0 ms and 2.0 ms, respectively. The conclusion has potential significance to improve and develop new Y-branch digital optical switch (DOS), MZI thermo-optic switch, directional coupler (DC) switch and optical modulators. © 2012 Elsevier Ltd.

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