Research on the Relationship of Workplace Ostracism, Employee Emotional Attachment and Job Burnout

工作倦怠的问题目前在中国职场中越来越严重，这些员工的负面状态严重影响着组织、企业的利益，阻碍组织正常发展。当前已有一些研究对工作倦怠的影响因素进行分析发现，导致员工产生工作倦怠的因素包括工作环境，组织特征，个人特征等。而职场排斥是工作场所暴力行为的一种延伸，会让受到排斥的员工产生负面、不积极的人际关系感受，让员工的自尊需求得不到满足，甚至有受欺辱的感觉产生。这种感受会引起个体与排斥实施者之间的关系僵化，进一步更会让其疏远他人、滋生不满，造成情绪多变的性格。这些都与情绪衰竭、去人性化与低成就感紧密相关。 因此，如何处理员工工作倦怠成为组织所需要面临的巨大难题。本文选取中国员工为样本，旨在探究职...Job burnout can be seen everywhere in China. These negative states have caused great damage to the interests of the organization and employees. According to those researches that have done, the work environment、organizational feature and personal characteristics will affect job burnout. As a branch of workplace violence, workplace ostracism results in negative feelings in interpersonal behavior. O...学位：管理学硕士院系专业：管理学院_企业管理(含财务管理、市场营销、人力资源管理)学号：1762012115121

聚苯胺纳米点的氧化还原态与其库仑台阶效应

应用电化学恒电位法结合模板法制备聚苯胺纳米点阵列,导电原子力显微镜研究处于不同氧化还原态的聚苯胺纳米点的I～V特性,发现只有处于部分氧化态(导电态)的聚苯胺纳米点才出现库仑台阶效应,还原和全氧化态聚苯胺纳米点不显示库仑台阶.初步探讨了上述现象

多级树状纳米结构聚苯胺的电化学制备

建立一种无模板的恒电位电聚合方法,可在室温下制备对甲基苯磺酸(p-TSA)掺杂的多级树状纳米结构聚苯胺(PANI).根据电聚合曲线分析了PANI的聚合机理.扫描电镜(SEM)、透射电镜(TEM)观察表明制备的PANI具有均匀的多级树状纳米结构.紫外可见吸收光谱(UV-Vis)和红外光谱(FTIR)则显示所制备的PANI为掺杂态.该电沉积方法具有简便、易操作的特点,还可应用于其它纳米结构导电聚合物的可控制备

手性聚苯胺纳米纤维的电化学制备

采用恒电位电聚合法制备了樟脑磺酸(CSA)掺杂的旋光异构性聚苯胺(PANI)纳米纤维.用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、紫外-可见吸收光谱(UV-Vis)和圆二色光谱(CD)对PANI纳米纤维的形貌和光学性质进行表征,结合电聚合溶液胶束平均粒径和ζ电位的测定,研究了具有旋光异构性PANI纳米纤维的形成机理和具有增强旋光异构性的原因.所制备的PANI纳米纤维具有无双螺旋结构,其形貌不随着苯胺浓度的改变而变化.不同手性樟脑磺酸掺杂制备的PANI纳米纤维具有镜像对称的旋光异构性,且具有较高的椭圆偏振率.这种手性PANI纳米纤维的颜色和旋光性均可通过化学掺杂/去掺杂或电化学掺杂改变氧化还原态而呈现可逆变化

自组装金团簇电极库仑台阶现象和电化学阻抗谱研究

采用示差脉冲伏安法研究了自组装单层保护金纳米团簇(C8AuMPC)在常温下二氯甲烷溶液中的量子化电容充电效应.研究结果表明,该团簇在-0.8~0.8V电位范围内有4对明显的量子化电容充电峰.同时采用电化学阻抗谱对C8AuMPC修饰金电极体系的界面结构进行了表征,研究结果表明,MPC自组装层存在两个界面,即金电极-MPC层界面和MPC层-溶液界面;这两个界面的界面电容在MPC的零电荷电位(ca.-0.2V)附近均基本保持不变,随着电位正移或负移到一定程度,界面电容发生变化.进一步利用双隧道结金属岛库仑阻塞效应理论讨论了已有报道中对MPC量子化电容充电的理论分析结果,并证明电化学阻抗谱也是研究MPC量子化电容充电效应的有效方法.另外,用示差脉冲伏安法及循环伏安法研究了电活性物种二茂铁对C8AuMPC量子化电容充电的影响,发现溶液中的电活性物种对MPC层-溶液界面的电子传递的贡献可以忽略,表明该界面的电子传递主要发生在纳米粒子之间

固态聚苯胺电致变色器件的制备和性能

采用CeO2-TiO2复合物薄膜作为聚苯胺电致变色器件的对电极,选用聚合物固态电解质(PE:PMMA-PC-EC-L iC lO4),构筑了新型双层结构(Dual-type)聚苯胺(PANI)固态电致变色(EC)器件.用电化学现场紫外-可见光谱法表征了该EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的电致变色性能,并与单层结构(S ingle-type)EC器件(ITO|PANI||PE||ITO)进行了比较.研究结果表明,双层结构EC器件比单层结构EC器件的电致变色性能好,如响应速度快,循环寿命长.同时,考察了电解质组分对聚苯胺电致变色稳定性的影响.EC器件(ITO|PANI||PE||CeO2-TiO2|ITO)的颜色呈现由透明的黄色(-1.5 V,PANIvs.CeO2-TiO2)到蓝色(1.0 V)的可逆变化,在700 nm处的透射率由42.19%变到13.35%,经过150个循环,其透射率差仍保持不变,着色效率为152.1 cm2/C

Electrochemical Immunosensor Based on Chitosan/CNT Modified Electrode for the Detection of α-fetoprotein(AFP)

目的构建壳聚糖/碳纳米管(CnT)修饰电极电化学免疫传感器用于甲胎蛋白(AfP)检测的新技术。方法采用壳聚糖/CnT复合物修饰玻碳电极,通过共价键合方式将AfP抗体固定在修饰电极表面,固定抗体的电极与AfP、辣根过氧化物酶(HrP)标记的AfP抗体反应,构筑夹心型免疫复合结构。HrP催化TMb底物产生电流信号,电流信号大小与AfP浓度成正相关,实现对AfP的高灵敏检测。结果该电化学免疫传感器可以准确检测AfP标准样品,也可用于检测血清中AfP的浓度。结论壳聚糖/CnT修饰电极构建的用于AfP检测的电化学免疫传感器具有较高的灵敏度和准确性。Objective Construction of novel technology of electrochemical immunosensor based on chitosan/CNT modified electrode for the detection ofα-fetoprotein(AFP).MethodChitosan/CNT composites were used to modify the glassy carbon electrode,and then the AFP antibody was immobilized on the surface of modified electrode via covalent bonding via the glutaraldehyde.The fixed AFP antibody reacted with the AFP and HRP conjugated AFP antibody to form sandwich-type immunoassay structure.The high sensitive determination of AFP was measured from the electrochemical signal generated from the HRP catalyzed TMB substrate,and the current signals were positively related to the concentrations of AFP.ResultThe electrochemical immunosensor can be applied to accurately detect the AFP samples and can also be used for the detection of serum AFP concentration.ConclusionThe constructed electrochemical immunosensor based on Chitosan/CNT modified electrode for the detection of AFP shows high sensitivity and accuracy.福建省自然科学基金(2011J05023);福建医科大学博士启动基金(2010BS006);厦门大学固体表面物理化学国家重点实验室开放课题(201010

Size Effect of Conductivities of Polyaniline Nanowires

The study of size effect of conductivity of conducting polymer nanowires can be significant not only in the instruction of fabrication of the devices with nanodimension but also in basic research of inherence of nanomaterials. PANI nanowires was fabricated in AAO templates by potentiostatic method. A new strategy of chemical modification of AAO template was introduced to prepare nanowires with smaller diameter. FTIR and contact angle measurements were used to characterize the modification. Tunneling Electron Microscopy results showed that the smaller PANI nanowires in diameter can be obtained in surfactant modified AAO templates. Conductivity of single PANI nanowire had been measured by Conductive Atomic Force Microscopy. The results displayed that the conductivity of PANI nanowire increase while the decrease of the diameter of PANI nanowires, which was called size effect of conductivity of PANI nanowires. The size effect had been attributed to order polymer chains orientation of PANI nanowire, which had been confirmed by electron diffraction diagrams.国家自然科学基金(批准号:20433040,20173044)资

Electrochemical synthesis of hierarchical dendritic polyaniline nanostructures

建立一种无模板的恒电位电聚合方法，可在室温下制备对甲基苯磺酸（p-TSA）掺杂的多级树状纳米结构聚苯胺（PANI）.根据电聚合曲线分析了PANI的聚合机理.扫描电镜（SEM）、透射电镜（TEM）观察表明制备的PANI具有均匀的多级树状纳米结构.紫外可见吸收光谱（UV-Vis）和红外光谱（FTIR）则显示所制备的PANI为掺杂态.该电沉积方法具有简便、易操作的特点，还可应用于其他纳米结构导电聚合物的可控制备.In this work, the p-TSA doped and hierarchical dendritic nanostructured polyanilines (PANI) have been prepared by potentiostatic electropolymerization without using any templates at room temperature. The mechanism of the polymerization has been discussed according to the electrodeposition curves. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were employed to confirm the formation of uniform hierarchical dendritic structure on PANI. UV-Vis spectroscopy (UV-Vis) and infrared spectroscopy (FTIR) proved that the prepared PANI is in the form of emeraldine salt. The templateless electrodeposition method is simple, easy to operate, can be applied to fabricate other nanostructures of conducting polymers.国家自然科学基金项目（No. 21021002）、福建省自然科学基金(No. 2011J05023)和厦门大学固体表面物理化学国家重点实验室开放课题资助作者联系地址：1. 厦门大学 固体表面物理化学国家重点实验室，化学化工学院化学系，福建 厦门361005； 2. 福建医科大学药学院药物分析学系，福建 福州 350004Author's Address: 1. State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China; 2. Department of Pharmaceutical Analysis, Faculty of Pharmacy, Fujian Medical University, Fuzhou 350004, China通讯作者E-mail：jzzhou@xmu. edu. c

Electrochemical Preparation of Chiral Polyaniline Nanofibers

周剑章, 博士, 副教授, 主要从事纳米与生物电化学研究.【中文摘要】采用恒电位电聚合法制备了樟脑磺酸(CSA)掺杂的旋光异构性聚苯胺(PANI)纳米纤维. 用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、紫外-可见吸收光谱(UV-Vis)和圆二色光谱(CD)对PANI 纳米纤维的形貌和光学性质进行表征, 结合电聚合溶液胶束平均粒径和ζ电位的测定, 研究了具有旋光异构性PANI纳米纤维的形成机理和具有增强旋光异构性的原因. 所制备的PANI米纤维具有无双螺旋结构, 其形貌不随着苯胺浓度的改变而变化. 不同手性樟脑磺酸掺杂制备的PANI纳米纤维具有镜像对称的旋光异构性, 且具有较高的椭圆偏振率. 这种手性PANI 纳米纤维的颜色和旋光性均可通过化学掺杂/去掺杂或电化学掺杂改变氧化还原态而呈现可逆变化. 【Abstract】Chiral polyaniline(PANI) nanofibers were synthesized via facilely potentiostatic electropolymerization method without template in the presence of (1S)-(+)-camphor-10-sulfonic acid(D-CSA) or (1R)-(-)-camphor-10-sulfonic acid(L-CSA) as the dopant. The morphology and optical property of chiral PANI nanofibers were characterized with scanning electron microscopy(SEM), transmission electron microscopy(TEM), UV-Vis spectrum(UV-Vis) and circular dichroism(CD). Combined with the average diameter of micelles and zeta-potential of different deposition solutions, the formation mechanism and the enhanced optical activity of the optical PANI nanofibers were studied. The morphology of PANI nanofibers without the helical structure was consistent with the change of the concentration of aniline in the deposition solution when the concerntion of CSA was 1 mol/L. Furthermore, the chiral PANI nanofibers induced by different chiral CSA exhibited mirror-imaged circular dichroism spectra with high ellipticity, indicating the stereochemical selectivity of the molecular structure of PANI chain in the electrodeposited process. The colors and optical activities of the chiral PANI nanofibers not only can be kept with the chemical dedoping/redoping treatment, but also can reversibly varied with the different oxidized forms which were controlled via electrochemical route.国家自然科学基金(批准号: 21021002)、福建省自然科学基金(批准号: 2011J05023)和福建医科大学博士启动基金(批 准号: 2010BS006)资助