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101.
Kai Yang Xuan Zhang Enqin Fu Jingui Qin Minoru Kinoshita 《Journal of solid state chemistry》2004,177(11):4300-4304
Two new intercalation compounds were prepared by the reactions of Ni(II) cyclopolyamine complex cations with a preintercalate Mn1−xPS3K2x(H2O)y, respectively, through “ion exchange” process. Their structures were characterized by elemental analysis, X-ray powder diffraction and infrared spectroscopy. The lattice spacing increased 0.567 and 1.093 nm with respect to the pristine MnPS3. Ferrimagnetism of the intercalates was confirmed by SQUID experiment with Tc at 40 and 33 K, respectively. 相似文献
102.
探讨了有机金属催化剂的组成及其对二氧化碳同环氧丙烷交替共聚产物结构的影响,发现二乙基锌—助剂体系的催化活性按如次顺序递降:二乙基锌—连苯三酚>二乙基锌—间苯二酚>二乙基锌—对苯二胺>二乙基锌—亚乙基脲。若用三异丁基铝代替二乙基锌同连苯三酚构成催化剂,则失去对二氧化碳同环氧丙烷交替共聚反应的活性同时,著者发现二乙基锌—二元芳胺催化体系与二乙基锌—二元酚催化体系的催化活性规律完全不同。 相似文献
103.
脊髓小脑变性疾病病人血清铜,锌,铝,铁含量的研究 总被引:1,自引:0,他引:1
脊髓小脑变性疾病(SCD)的病因可能与遗传、神经生化紊乱、感染、微量元素平衡障碍及自由基损伤等因素有关,其中微量元素平衡障碍的研究具有重要意义。检测了SCD中发病率较高的橄榄桥小脑萎缩症(OPCA)及晚发性小脑皮质萎缩症(LCCA)病人15例血清中铜、锌、铝、铁等微量元素含量。发现病人比对照组铜明显降低,P〈0.01;锌明显降低,P〈0.01;铝明显升高,P〈0.01;铁无明显差别。 相似文献
104.
Yong Zhong DU Fu Qiang HU Hong YUAN Shinzo OMI 《中国化学快报》2006,17(4):553-556
Stable poly(styrene-co-sodium styrene sulfonate) (P(St-NaSS) nanoparticles with broader size distribution were synthesized by thermal emulsion polymerization without any conventional initiators and emulsifiers. The obtained polymer nanoparticles have higher ξ potential, and the particle sizes have broad distribution. The stability of polymer particles originated from the addition of small amounts of ionic comonomer, NaSS, which can act as an emulsifier in somewhat. The monomer conversion could reach up to about 28 wt% in 48 h, and did not increase by further polymerization when higher polymerization temperature (120 ℃) was employed. This polymerization system may be give some further understand for mechanism of emulsion polymerization. 相似文献
105.
Tianle Zhu Jiming Hao Lixin Fu Junhua Li Zhiming Liu 《Reaction Kinetics and Catalysis Letters》2005,84(1):61-67
Summary The cooperation effect of reducing species for selective reduction of NO over Ag/Al2O3 has been investigated in the presence of excess oxygen. When the combinations of propene or propane and ethanol or methanol were used as reducing agents, NO reduction took place over a wider temperature range, compared with a single hydrocarbon as reducing agent. 相似文献
106.
用柠檬酸盐法合成出La_(1-_x)Sr_xFeO_3(x=0.1,0.2,0.3,0.4)原粉,再经固相反应得到纳米晶粉末,用TG、DTA、XRD、IR进行了表征,确证复合氧化物La_(1-_x)Sr_xFeO_3为钙钛矿型结构,粒径在10~25nm之间。实验结果表明,随着固相反应条件不同,产物粒径呈规律性变化.气敏特性研究表明,该纳米晶材料对乙醇有较高的选择性和灵敏度,其选择性顺序为La_(0.9)Sr_(0.1)FeO_3>LaFeO_3>LaFeO_3(大晶粒)。 相似文献
107.
A C60-centered dendritic adduct with 12 symmetrically attached pyrene species was synthesized and found to have relatively simple fluorescence emission kinetics, in particular, the mono-exponential decay of the significant pyrene excimer emission. 相似文献
108.
The paper reported the synthetic procedure and character of Copper(Ⅱ) binuclear coordination compound of 1,4-bis-(1′-phenyl-3′-methyl-5′-pyrazolone-4′)-1,4-butanedione. The non-isothermal kinetic of the thermal decomposition of the complex has been studied from the TG-DTG curves by means of the Achar et al and Coats-Redfern methods. The electrochemical characterization of the complex were studied by means of powder microelectrodes technique. 相似文献
109.
Platinum nanoclusters were deposited along the supercoiled DNA strands after incubation of cis-(trans-1R,2R-diaminocyclohexane)(dl-camphorato)platinum(Ⅱ) (Cdp), an analogue of the anti-tumor drug-carboplatin, with DNA and K2PtCl4 for 600 min and then through reduction of dimethylaminoborane (DMAB). The decrease of absorption of DNA at 260 nm indicates the coordination of Cdp and DNA. TEM and AFM were employed to characterize the morphologies and structures of platinum nanoclusters. 相似文献
110.
The gold nanoprisms (GNPs) have exhibited special plasmonic properties for biomedical applications because of their unique shapes and dimensions. Based on their optical performance, the NIR dye IR780 not only enabled the GNPs-based nanosystem as SERRS nanoparticles for Raman-encoded molecular imaging, but also enhanced the plasmonic photothermal property by laser irradiation. Meanwhile, the GNPs/IR780-Lyp-1 by introduction of tumor-homing peptide segment LyP-1, which presents high affinity to p32 protein, demonstrated the increased enrichment in tumor region and enhanced photothermal therapy efficacy. 相似文献