双卟啉金属铑配合物的合成

本文报道二种新的配体：双四苯基卟啉基对苯二甲亚胺（Ｉ），双［（５，１０，１５－三甲苯基）－２０－苯基）卟啉基］对苯二甲亚胺（Ⅱ），并合成了相应的单金属铑配合物Ⅲ．Ⅳ，进行了元素分析，电子光谱，红外光谱．质子核磁共振及光助还原水放氢实验．     

Modeling of the relationship between electroosmotic flow and separation parameters in capillary zone electrophoresis using artificial neural networks and experimental design

The prediction of migration time of electroosmotic flow (EOF) marker was achieved by applying artificial neural networks (ANN) model based on principal component analysis (PCA) and standard normal distribution simulation to the input variables. The voltage of performance, the temperature in the capillary, the pH and the ionic strength of background electrolytes (BGE) were applied as the input variables to ANN. The range of the performance voltage studied was from 15 to 27 kV, and that of the temperature in the capillary was from 20 to 30 °C. For the pH values studied, the range was from 5.15 to 8.04. The range of the ionic strength investigated in this paper was from 0.040 to 0.097. The prediction abilities of ANN with different pre-processing procedure to the input variables were compared. Under the same performance conditions, the average prediction error of the migration time of the EOF marker was 5.46% with RSD = 1.76% according to 10 parallel runs of the optimized ANN structure by the proposed approach, and that of the 10 parallel predictions of the optimal ANN structure for the different performance conditions was 12.95% with RSD = 2.29% according to the proposed approach. The study showed that the proposed method could give better predicted results than other approaches discussed.     

CoMFA, CoMSIA, and molecular hologram QSAR studies of novel neuronal nAChRs ligands-open ring analogues of 3-pyridyl ether

3-Pyridyl ethers are excellent nAChRs ligands, which show high subtype selectivity and binding affinity to alpha4beta2 nAChR. Although the quantitative structure-activity relationship (QSAR) of nAChRs ligands has been widely investigated using various classes of compounds, the open ring analogues of 3-pyridyl ethers have been less involved in these studies due to the greater flexibility of this kind of molecule. In this study, two three-dimensional QSAR techniques and one two-dimensional QSAR technique were used to correlate the molecular structure with the biological activity of 64 analogues of 3-pyridyl ethers. Three different QSAR models were established. Their performances in the QSAR studies of open ring analogues of 3-pyridyl ethers were evaluated by the statistical values in the corresponding models. All models exhibited satisfactory predictive power. Of these models, the HQSAR behaved optimally in terms of the statistical values with q2=0.845, r2=0.897. Finally, graphic interpretation of three different models provided coincident information about the interaction of the ligand-receptor complex and supplied useful guidelines for the synthesis of novel, potent ligands.     

流动注射化学发光法测定N-四氢苯并噻唑亚胺希夫碱

基于新合成的噻唑类希夫碱．N-（2-四氢苯并噻唑）－2-羟基苯甲亚胺对Ce4＋与SO32-反应产生的微弱化学发光的增敏作用，建立了流动注射化学发光测定噻唑类希夫碱的方法。该法线性范围为8．0×10－5～2．0×10－7mol/L；检出限为5．0×10－8mol/L；对2．0×10－7mol/L噻唑类希夫碱7次平行测定相对标准偏差为2．2％。     

Quantification of analytes in overlapping peaks from capillary electrophoresis using multivariate curve resolution-alternating least squares methods

Application of multivariate curve resolution with alternating least squares (ALS) methods to second-order data from capillary electrophoresis diode array detector (CE-DAD) is shown. Second-order data are easily obtained by setting individual data matrix of CE run one in top of the other. Initial qualitative solutions obtained by evolving factor analysis can be further optimized by simultaneous analysis of multiple electrophoresis run data with ALS regression. Quantification is achieved by the comparison of the analyte peak areas with that of pure standards. During the ALS regression procedure, the following constraints were applied: (i) both concentrations and unit pure spectra of the resolved components must be positive; (ii) elution profiles have an unimodal shape; (iii) correspondence exists between common species in the different data matrices; (iv) the pure spectrum of each species is the same in all runs where it is present. The above methods were applied for the determination of dinitrotoluene (DNT) isomeric compounds in overlapping peaks from CE.     

ZnO及其含锌混合氧化物薄膜的充放电性能研究

从充放电性能、晶体结构等方面考察了包括粉末状的ZnO、脉冲激光沉积方法制备的ZnO薄膜和含锌混合氧化物薄膜的电化学性质.结果表明,ZnO粉末制备的电极的嵌入容量随退火温度的升高而增大,掺入其他氧化物可以明显改善ZnO薄膜的电化学性能,在Ar气氛中,基片温度为400℃时,沉积的靶子成分为Zn:B:P:Al=1:1:0.5:0.5(摩尔比)的含锌混合氧化物薄膜具有较高的可逆容量,且循环性能良好.     

高效液相色谱手性流动相添加剂分离肾上腺素类对映体

 将β－环糊精、２，６－二甲基－β－环糊精、２，３，６－三甲基－β－环糊精分别作为手性流动相添加剂，较系统地研究了Ｄ，Ｌ－肾上腺素、Ｄ，Ｌ－异丙肾上腺素、Ｄ，Ｌ－麻黄碱在反相ＨＰＬＣ系统中的拆分，建立了甲基化β－环糊精动态手性固定相法分离肾上腺素类药物对映体的方法，探讨了立体选择性与环糊精主体和客体分子结构之间的关系     

癌症与病毒早期诊断的生物传感技术

本文对癌症与病毒早期诊断的生物传感技术进行了探讨, 展望了用于检测DNA、病毒、生物标志物的薄膜生物传感器的研究和应用前景。     

拓扑指数法研究显色剂结构与反应性能关系

本文讨论了２９个不对称色酸双偶氮膦酸型显色剂的分子联接性指数，并将其与结构选择性因子相结合，用于偶氮类剂结构与铈显色反应灵敏度的相关性研究，讨论了显色剂结构对显色反应灵敏度的影响。