摘要：
The mechanism and kinetics of corrosive defects formed on Au substrates accompanied by alkanethol monolayer assembly in the presence of oxygen have been investigated by using in situ quartz crystal microbalance (QCM) and atomic force microscopy (AFM). The gold lost from the in situ QCM could be well explained by the AFM image, which evidently shows the corrosive defects or holes produced on the corresponding Au surface. The initial corrosion rate on gold was calculated to be 9.2 ×10<sup>11</sup> Au atoms cm<sup>-2</sup>S <sup>-1</sup>. For a long-term Au corrosion occurred during alkanethiol assembled process, the kinetics behavior has been determined with an atomic absorption spectroscopy (AAS). The corrosion rate on the long-term Au dissolution on Au plates was calculated to be 1.3 ×10<sup>8</sup> Au atoms cm<sup>-2</sup>S<sup>-1</sup>. Both corrosive kinetics equations obtained with QCM and AAS show a consistent corrosion trend on Au substrates.
摘要：
A novel metal-organic frameworks [Cu-2(OH)(2,2'-bpy)(2)(BTC) center dot A 2H(2)O](n) (CuMOF, BTC = benzene-1,3,5-tricarboxylic acid, 2,2'-bpy = 2,2'-bipyridine) has been synthesized hydrothermally and characterized by single crystal XRD, FT-IR spectra. The low-temperature molar heat capacities were measured by temperature modulated differential scanning calorimetry (TMDSC) for the first time. The thermodynamic parameters such as entropy and enthalpy relative to reference temperature 298.15 K were derived based on the above molar heat capacity data. Moreover, the thermal stability and the decomposition mechanism of CuMOF were investigated by TG-MS (thermogravimetry-mass spectrometer). A four-stage mass loss was observed in the TG curve. MS curve indicated that the gas products for oxidative degradation of CuMOF were H2O, CO2, NO and NO2.
摘要：
Coating with a calixarene derivative on gold surface of AT-cut quartz crystal, a piezoelectric quartz crystal (PQC) sensing device was successfully fabricated in this paper. Among four calixarene materials, the compound of MRCT was the most efficient actively coating material for recognizing ethanol molecule based on a host-guest recognition mechanism with C—H•••π interaction. In comparison with gas-chromatography (GC) method, the calixarene based PQC device can be well used for on-line detection of the ethanol vapor in the range of 0 ~ 3000 ppm around our environment with a recovery of 92.33~105.76 %. The detection limit can be evaluated to be 3.53 ppm. Furthermore, the proposed TSM sensor possessed good selectivity, reproducibility, reversibility and high stability for practical purpose.
作者：
Xu, F.;Sun, L. X.*;Chen, P.;Qi, Y. N.;Zhang, J.;...
期刊：
Journal of Thermal Analysis and Calorimetry,2010年100(2):701-706 ISSN：1388-6150
通讯作者：
Sun, L. X.
作者机构：
[Xu, F.] Liaoning Normal Univ, Coll Chem & Chem Engn, Dalian 116029, Peoples R China.;[Chen, P.; Qi, Y. N.; Sun, L. X.; Zhang, J.; Zhao, J. N.] Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, Dalian 116023, Peoples R China.;[Liu, Y. F.] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China.;[Zeng, J. L.; Zhang, L.; Cao, Zhong; Yang, D. W.] Changsha Univ Sci & Technol, Sch Chem & Environm Engn, Changsha 410076, Hunan, Peoples R China.;[Du, Y.] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China.
通讯机构：
[Sun, L. X.] C;Chinese Acad Sci, Dalian Inst Chem Phys, Mat & Thermochem Lab, 457 Zhongshan Rd, Dalian 116023, Peoples R China.
关键词：
Li–Mg–N–H system;MDSC;Heat capacity;TG
摘要：
The heat capacities of LiNH2 and Li2MgN2H2 were measured by a modulated differential scanning calorimetry (MDSC) over the temperature range from 223 to 473 K for the first time. The value of heat capacity of LiNH2 is bigger than that of Li2MgN2H2 from 223 to 473 K. The thermodynamic parameters such as enthalpy (H-H (298.15)) and entropy (S-S (298.15)) versus 298.15 K were calculated based on the above heat capacities. The thermal stabilities of them were investigated by thermogravimetric analysis (TG) at a heating rate of 10 K min(-1) with Ar gas flow rate of 30 mL min(-1) from room temperature to 1,080 K. TG curves showed that the thermal decomposition of them occurred in two stages. The order of thermal stability of them is: Li2MgN2H2 > LiNH2. The results indicate that addition of Mg increases the thermal stability of Li-N-H system and decrease the value of heat capacities of Li-N-H system.
通讯机构：
[Cao, Zhong] C;Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.
会议名称：
International Conference on Manufacturing Engineering and Automation
会议时间：
DEC 07-09, 2010
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Huang, Xixi;Cao, Zhong;Liu, Yongle;Dai, Yimin;Zeng, Julan] Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Sch Chem & Biol Engn, Changsha 410004, Hunan, Peoples R China.^[Yang, Ronghua] Foshan Univ, Environm & Civil Engn Sch, Foshan 528000, Peoples R China.^[Takei, Hiroyuki] Toyo Univ, Dept Life Sci, Tokyo 112, Japan.^[Cao, Zhong;Takei, Hiroyuki] Hitachi Ltd, Life Sci Grp, Kawagoe, Saitama 350, Japan.
会议论文集名称：
Advanced Materials Research
关键词：
Bulk effect;Capped au nanoparticle;Nano device;Nanophotonics;Optical biosensor
摘要：
An novel optical nano biosensor based on gold capped nano-particles for detecting binding events between ligands and receptor molecules as well as interactions among proteins without use of labels has been presented in this paper. The optical properties of nano-sized gold particles exhibiting pronounced adsorption in the visible region which called as localized surface plasmon resonance (LSPR) have been exploited, whose peak wavelengths depended exquisitely on the refractive index of the surrounding. In comparison with surface plasmon resonance (SPR) technology, the optical nano biosensor possessed high sensitivity, surprisingly low “bulk effect”, ease of preparation, and low-cost polymer based fabrication, which opened a promising bioanalytical application in practice.
期刊：
OPEE 2010 - 2010 International Conference on Optics, Photonics and Energy Engineering,2010年2:156-158
通讯作者：
Cao, Z.(zhongcao04@yahoo.com.cn)
作者机构：
[Sha Pan] School of Foreign Languages, Changsha University of Science and Technology, Changsha, China;[Zhong Cao] School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, China
会议名称：
2010 International Conference on Optics,Photonics and Energy Engineering(2010光学、光子学与能源工程国际会议 OPEE 2010)
会议时间：
2010-05-10
会议地点：
武汉
会议论文集名称：
2010 International Conference on Optics,Photonics and Energy Engineering(2010光学、光子学与能源工程国际会议 OPEE 2010)论文集
摘要：
The nano biosensors based on gold cap-shaped nano-particles like polystyrene and silica nanospheres have been successfully prepared on the substrates of disposable plate (96 wells) and miniplate (72 wells). The sensing film of carboxymethyl dextran layer was modified on the gold surface of the cap-shaped nano-particles. The corresponding micro-device with four channel of optical sensing system has been well constructed and applied to detection of anti-avidin D protein and biotinylated DNA molecules. The DNA hybridization reaction has also been real-time and parallel monitored in four channels, showing that the device possessed a nice reproducibility, which opens a promising bioanalytical application in practice.
期刊：
OPEE 2010 - 2010 International Conference on Optics, Photonics and Energy Engineering,2010年2:153-155
通讯作者：
Cao, Z.(zhongcao04@yahoo.com.cn)
作者机构：
[Pan, Sha] School of Foreign Languages, Changsha University of Science and Technology, Changsha, China;[Sun, Li-Xian; Tan, Shu-Zhen; Cao, Zhong; Li, Dan] School of Chemistry and Biological Engineering, Changsha University of Science and Technology, Changsha, China
会议名称：
2010 International Conference on Optics,Photonics and Energy Engineering(2010光学、光子学与能源工程国际会议 OPEE 2010)
会议时间：
2010-05-10
会议地点：
武汉
会议论文集名称：
2010 International Conference on Optics,Photonics and Energy Engineering(2010光学、光子学与能源工程国际会议 OPEE 2010)论文集
摘要：
The piezoelectric thickness-shear-mode (TSM) acoustic wave sensing device was fabricated by coating with a calixarene derivative on the surface of gold electrode of quartz crystal, then connecting with a transistor-transistor-logic (TTL) oscillator, a frequency counter and a computer. Among four coating materials, the compound of calixarene I was the most efficient active material for adsorption of carbinol molecule based on a host-guest recognition mechanism. In comparison with gas chromatography (GC) method, the calixarene based TSM device can be used for on-line determination of the poisonous carbinol vapor in the range of 0 ~ 3000 ppm around our living environment with good selectivity, reproducibility and high stability. The detection limit can be evaluated to be 1.41 ppm.
