不同溶剂中导电聚合物PEDOT的化学氧化聚合及光谱研究

利用3,4-乙撑二氧噻吩单体和对甲苯磺酸铁,分别以异丙醇、四氢呋喃和乙氰为溶剂,用化学氧化法合成了导电聚合物聚（3,4-乙撑二氧噻吩）,3种溶剂中的反应速率有较大差异,乙氰中反应速率最快,四氢呋喃中反应速率最慢.三者的聚合产物都具有较高的电导率,但四氢呋喃中合成产物的电导率略高于另外两个产物.红外光谱和拉曼光谱显示,3种溶剂中合成的聚（3,4-乙撑二氧噻吩）在化学结构、分子共轭长度、掺杂情况等方面基本相同.     

聚合工艺对聚噻吩固体片式铝电解电容器的影响

采用导电高分子材料聚(3,4-乙撑二氧噻吩)(PEDT)制备固体片式铝电解电容器,主要探索了化学聚合工艺对聚噻吩固体片式铝电解电容器性能的影响.结果表明,低的聚合溶液浓度可以提高所制备电容器的容量、降低损耗和等效串联电阻(ESR),但需要增加聚合次数以获得所需厚度的PEDT膜;化学聚合过程中烘干温度为40℃并进行适当次数的清洗,其所制备的产品容量较高,损耗较小,ESR低;增加聚噻吩的化学聚合次数可以提高电容器的容量引出水平,并降低损耗和ESR.     

基于3,4-乙撑二氧噻吩-亚乙烯基的杂化型电致变色聚合物的合成与表征

合成了2个基于EDOT-vinylene(3,4-乙撑二氧噻吩-亚乙烯基)的杂化型新单体BEDOT-V-F[双(3,4-乙撑二氧噻吩亚乙烯基)呋喃]和BEDOT-V-T[双(3,4-乙撑二氧噻吩亚乙烯基)噻吩]。分别对这2种材料进行电化学、光谱电化学、动力学和表面形貌的表征,考查了它们的电致变色性质。结果表明PBEDOT-V-F和PBEDOT-V-T具有非常低的初始氧化电位、良好的电化学稳定性和较低的带隙值,它们在近红外区的光对比度分别为31.5%(950nm)和36.7%(980nm),且都具有在蓝色和透过态之间可逆变化的电致变色能力,因此在近红外光学器件领域具有潜在的应用价值。     

液相沉积聚合法制备的聚3,4-乙撑二氧噻吩(PEDOT)薄膜

将聚酰亚胺(PI)膜浸入NaOH溶液后再依次浸入FeCl3和3,4-乙撑二氧噻吩(EDOT)溶液。以红外光谱仪(ATR-FT-IR)分析PI膜表面官能团的变化,以恒流源电阻测量仪分析PI膜表面电阻的变化。PI膜经NaOH溶液浸泡后,部分酰亚胺环水解开环,亲水性大幅度提高。水解膜吸附的FeCl3可诱发EDOT单体在PI膜表面沉积聚合,PI膜表面出现PEDOT的特征吸收带。沉降聚合所得聚3,4-乙撑二氧噻吩(PEDOT)膜的表面电阻可达7.0×105Ω。     

聚3,4-乙撑二氧噻吩的合成及性能

介绍了聚3,4-乙撑二氧噻吩(PEDT)的合成过程、性能及测试方法.通过聚苯乙烯磺酸(PSS)掺杂,解决了PEDT的加工问题,研究了氧化剂及掺杂剂的用量、反应体系的浓度、反应温度、反应时间、PSS的磺化度和加料方式对PEDT性能的影响.     

3,4-乙撑二氧噻吩(EDOT)的新合成方法

以氯乙酸为原料,通过酯化、Claisen缩合、O-烷基化和脱羧等反应合成出3,4-乙撑二氧噻吩,总产率为23.6%,运用FTIR、GC-MS对产品结构进行了表征,并对其反应机理进行了讨论.     

聚噻吩/碳纳米管复合物的元件制作及其气敏响应性的应用测试

本文通过化学氧化法以3,4-乙撑二氧噻吩聚合聚3,4-乙撑二氧噻吩(PEDOT),得到固体粉末样品,用液体胶水作为联体,在其掺杂功能化碳纳米管(f-CNTS)与聚噻吩,制备了复合纳米材料,并制作系列工作电极,利用自制气敏装置,应用于含甲醛的饱和汽体测试研究。测试数据表明,掺杂不同含量的碳纳米管与聚噻吩,对不同浓度的甲醛气敏响应性测试,由其电极材料的微型结构的变化,电阻规律性变化表现出不同的气敏响应性。同时,与单一种物质作用相比,复合材料膜有更好的电子传递行为,表现灵敏的响应性。     

碲化镉量子点/聚(3,4-乙撑二氧噻吩)-聚苯乙烯磺酸复合纳米微球的原位聚合与光学性质

通过原位种子聚合构筑了碲化镉量子点(CdTe QDs)/聚(3,4-乙撑二氧噻吩)-聚苯乙烯磺酸(PEDOT-PSS)复合纳米微球.利用扫描电镜、红外光谱,X射线光电子能谱、紫外可见吸收光谱及荧光发射光谱对其形貌、结构、光学吸收性质及光致发光性能进行了测试分析.研究结果表明,原位聚合的CdTe/PEDOT-PSS复合物...     

含EDOTBT结构单元低能隙聚合物的合成及性能

采用Heck反应制备了以3,4-乙撑二氧噻吩(EDOT)为供体,苯并噻二唑(BT)为受体的D-A型单体4,7-二(3,4-乙撑二氧噻吩)-苯并噻二唑(EDOTBT);采用Suzuki反应合成了一种低能隙的共轭聚合物4,7-二(3,4-乙撑二氧噻吩)-苯并噻二唑-芴共聚物(PEDOTBTF6)。通过核磁共振、热失重、凝胶渗透色谱、紫外-可见光光谱、循环伏安等对其进行了分析研究。结果表明,成功合成了单体EDOTBT及共轭聚合物PEDOTBTF6,所得共聚物具有较高的相对分子质量,在有机溶剂中具有较好的溶解性,且具有良好的热稳定性。PEDOTBTF6具有较低的能带隙,其光学带隙宽为1.65eV。通过循环伏安法测得其HOMO和LUMO能级分别为-5.23eV,-3.58eV。由该共聚物制备的聚合物太阳能电池具有良好的光电性能。初步研究表明,当退火温度为160℃,退火时间为20min时,所得到的聚合物太阳能电池的短路电流(Jsc)为1.6mA/cm2;开路电压(Voc)为0.5V;光电转换效率(PCE)为0.21%。     

对苯醌二亚胺与3,4-乙撑二氧噻吩共聚物的合成及表征

以N,N′-二氯对苯醌二亚胺、2,5-二甲基-N,N′-二氯对苯醌二亚胺与2,5-二溴-3,4-乙撑二氧噻吩为单体,1,3-二(二苯基膦)丙烷二氯化镍(Ⅱ)为催化剂,采用金属配合物催化法合成了聚(N,N′-对苯醌二亚胺-3,4-乙撑二氧噻吩)和聚(2,5-二甲基-N,N′-对苯醌二亚胺-3,4-乙撑二氧噻吩)两种共聚物。通过红外光谱(FT-IR)、核磁共振(1H-NMR)、凝胶渗透色谱(GPC)、X射线衍射(XRD)、紫外分光光度计(UV-Vis)和循环伏安(CV)等测试对其进行了结构表征及性能测试。结果表明,两种共聚物在CF3COOH(TFA)溶液中的UV-Vis最大吸收波长分别在500 nm和511 nm处;氧化还原峰出现在-0.2 V-0.8 V之间;通过碘掺杂后共聚物的电化学窗口拓宽,电化学活性提高。     

Certification Institutions Expected to Update and Transfer Information on Present Standards

Standards are the basis for production enterprises to organize production, ex-factory inspection, trade (delivery) and technical exchanges, product certification, quality arbitration and supervision.……     

Optimum-Simulation von Ernteprozessen

Zusammenfassung Bei der Gestaltung von Ernteprozessen — beispielsweise des Prozesses Mähdrusch, Körnertransport und -abnahme — als transportverbundene Fließarbeitsverfahren mit mindestens zwei verschiedenen Arbeitsmitteln gibt es einen großen Optimierungsspielraum. Solche Prozesse sind mehrstufige Bedienungsprozesse mit gemischter Anordnung der Bedienungseinrichtungen. Außerdem besitzen sie stark ausgeprägte räumliche Aspekte. Es wird vor allem gezeigt, welche Merkmale solcher Prozesse in Simulationsmodellen abgebildet sein müssen, welche Zielgrößen in Abhängigkeit von welchen Einflußgrößen unter Berücksichtigung welcher Prozeßbedingungen ermittelt werden sollten und wie der Bewertungsprozeß zur Ermittlung der gewünschten Informationen gestaltet werden muß.     

Brainstorming for ISO Strategy 2016-2020

正Responding to ISO’s appeal for survey for the to-be-developed ISO Strategy Plan for 2016-2020,SAC hosted a special workshop over the needs and comments of various fi elds on June 8 in Beijing.The workshop was attended by ISO President-elect and Ansteel General Manager Zhang Xiaogang,SAC Vice-Administrator Yu Xinli,and 30 experts from     

CNAS Passes APLAC's PTP Review

正The review group of Asia Pacific Laboratory Accreditation Cooperation(APLAC)carried out a 4-day peer review of the proficiency testing provider(PTP)for China National Accreditation Service for Conformity Assessment(CNAS)from July 28 to 31,2014.CNAS passed the PTP review with excellent performance.Two senior peer reviewers of APLAC made a comprehensive,rigorous and detailed review of CNAS’s PTP accreditation activities,and made the on-spot inspection of the review groups in Shanghai and Shenzhen respectively.     

新闻(英文)

正China and Greece Sign the Standardization Cooperation Agreement Witnessed by Chinese Premier Li Keqiang and Greek Prime Minister Antonis Samaras,AQSIQ Minister Zhi Shuping and ELOT Chairman and Executive Director Angelos Tolkas signed the SAC-ELOT Standardization Cooperation Agreement.The Agreement is one of the critical cooperation documents signed during Li Keqiang’s visit in Greece,encouraging China and Greece to     

Win-Win Cooperation

正The Chinese Premier Li Keqiang's recent trip to the UK has reinforced the China-UK comprehensive strategic partnership;just as the British Prime Minister David Cameron put it,"the relationship is gaining in strength,depth and understanding"after a bucket of business deals being inked worth more than 30 billion US dollars.From the first agreement signing in 2004 to the new agreement of mutual standards recognition and adoption in     

Systematic Approach for Emerging Industry

正A national directory of standards complexes for strategic emerging sectors was recently developed and released jointly by 12governmental departments,namely,SAC,NDRC,MOST,MIIT,MEP,MOA,AQSIQ,State Forest Administration,State Administration of Science and Technology for National Defense,State Oceanic Administration and National Railway Administration.     

Strictest Pollutants Emission Standards

正Four new national standards on air pollutant emission control offi cially issued by the Ministry of Environment Protection(MEP)together with AQSIQ and SAC has been brought into force from July 1,2014.The Emission standard for air pollutants of coal-burning,oil-burning and gasfi red boilers,which is the strictest emission standard historically,will tackle the stubborn pollution problem of boilers and waste incineration in most of China’s regions.     

Instructions to Authors

New Carbon Materials is a bimonthly journal published with the permission of the Ministry of Science and Technology and of the State News and Publication Agency.The journal is sponsored by the Institute of Coal Chemistry,Chinese Academy of Sciences,and is published by Science Press.Aims and Scope     

Progress on Standards Copyright Protection

正Recently,National Copyright Administration of China(NCAC)has rewarded 215 organizations and 179 individuals for their outstanding efforts on investigating standards copyright infringement and piracy in 2013.Hua Jianhua,the Deputy-Director of National Standards Copyright Protection Workgroup Office won a third prize of the national individual award.In 2012,SAC set up the national standards copyright protection working group,and developed policies to crack down standards infringement and piracy behaviors and to strengthen standards copyright protection.