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A new non-fullerene acceptor based on the heptacyclic benzotriazole unit for efficient organic solar cells

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Journal of Energy Chemistry 2020年第3期29卷 169-173页

作者： Mei Luo Liuyang Zhou Jun Yuan Can Zhu Fangfang Cai Jiefeng Hai Yingping Zou College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083HunanChina Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials College of Chemistry and BioengineeringGuilin University of TechnologyGuilin 541004GuangxiChina

Non-fullerene acceptors(NFAs)become an interesting family of organic photovoltaic materials,and have attracted considerable interest for their great potential in manufacturing large-area flexible solar panels by low cost coating methods[1–5].Recently,our group proposed in the first time an A-DA’D-A molecular strategy and synthesized a new class of non-fullerene acceptor Y6 with a record efficiency above 15%with single junction organic solar cells(oscs)[6].To further improve the photovoltaic performance of oscs,many effective strategies have been successfully explored,such as side-chain engineering and extension of fused core and terminal group engineering[7–12].As well-known,PCE of devices is determined by the open circuit voltage(Voc),short-circuit current density(Jsc)and fill factor(FF)[13].Among them,Voc is associated with low-lying highest occupied molecular orbital(HOMO)of donor and lowest unoccupied molecular orbital(LUMO)of acceptor of the active layer[14–16].Side-chain engineering is an effective strategy for manipulating energy levels and improving photovoltaic performance of devices[17–19].For example,introducing the alkyl/alkoxy chains can effectively tune the HOMO/LUMO energy levels[20–22].Tang et al.have reported a novel non-fullerene acceptor ITC6-IC.ITC6-IC has relatively high LUMO level and high Voc than those of ITIC due to the introduction of weak electrondonating hexyl group on thiophene[23].

关键词： Near-infrared electron acceptor Y9 Ladder-type heptacyclic fused ring Non-fullerene electron acceptors High-performance oscs

Pyrite-hydrocarbon Interaction under Hydrothermal Conditions: an Alternative Origin of H_2S and Organic Sulfur Compounds in Sedimentary Environments

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Acta Geologica Sinica(English Edition) 2016年第6期90卷 2133-2148页

作者： DING Kangle MEI Ping LUO Yue Key Laboratory of Exploration Technologies for Oil and Gas Resources of Ministry of Education Yangtze University State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum School of Chemistry and Environmental Engineering Yangtze University

Sulfate rocks and organic sulfur from sedimentary organic matter are conventionally assumed as the original sulfur sources for hydrogen sulfide （H2S） in oil and gas reservoirs. However, a few recent experiments preliminarily indicate that the association of pyrite and hydrocarbons may also have implications for H2S generation, in which water effects and natural controls on the evolution of pyrite sulfur into oscs and H2S have not been evaluated. In this study, laboratory experiments were conducted from 200 to 450°C to investigate chemical interactions between pyrite and hydrocarbons under hydrothermal conditions. Based on the experimental results, preliminary mechanism and geochemical implications were tentatively discussed. Results of the experiments showed that decomposition of pyrite produced H2S and thiophenes at as low as 330°C in the presence of water and n-pentane. High concentrations of H2S were generated above 450°C under closed pyrolysis conditions no matter whether there is water in the designed experiments. However, much more organic sulfur compounds （oscs） were formed in the hydrous pyrolysis than in anhydrous pyrolysis. Generally, most of sulfur liberated from pyrite at elevated temperatures was converted to H2S. Water was beneficial to breakdown of pyrite and to decomposition of alkanes into olefins but not essential to formation of large amounts of H2S, given the main hydrogen source derived from hydrocarbons. In addition, cracking of pyrite in the presence of 1-octene under hydrous conditions was found to proceed at 200°C, producing thiols and alkyl sulfides. Unsaturated hydrocarbons would be more reactive intermediates involved in the breakdown of pyrite than alkanes. The geochemistry of oscs is actually controlled by various geochemical factors such as thermal maturity and the carbon chain length of the alkanes. This study indicates that the scale of H2S gas generated in deep buried carbonate reservoirs via interactions between pyrite and natural gas should be much smaller than that of thermoch

关键词： laboratory experiments pyrite hydrocarbon H2S oscs geochemical implications

Towards a bright future:The versatile applications of organic solar cells

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Materials Reports(Energy) 2021年第4期1卷 34-44页

作者： Junjiang Wu Mengyuan Gao Yubo Chai Pengke Liu Bo Zhang Junwei Liu Long Ye School of Materials Science and Engineering Tianjin Key Laboratory of Molecular Optoelectronic SciencesTianjin UniversityTianjin300350PR China State Key Laboratory of Applied Optics Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun130033PR China

Due to the mechanical flexibility,light weight,aesthetics,absorption tunability and environmental friendliness,organic solar cells(oscs)have superior application potential over their inorganic counterparts including silicon and perovskite solar cells(PSCs).Thanks to these benefits,the past decade have witnessed the rapid growth of flexible oscs,semitransparent oscs and indoor oscs.In this progress report,we firstly overview the recent advance of the applications of the three promising oscs.Subsequently,we sketch the critical points for the three classes of oscs and highlight the efforts paid by the research community to address these issues.Besides,we discuss some popular strategies to afford great performance of each kind of OSC,respectively,and underline the corresponding breakthrough directions.Last but not least,we present the remaining challenges for advancing the commercial applications of these three classes of oscs.

关键词： Organic photovoltaics Semi-transparent devices Flexibility Greenhouses Indoor solar cells oscs

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有机太阳能电池活性层材料的研究进展

高分子通报 2020年第12期 51-57页

作者：李悦马迪李国伟刘学斌郑浩铤中国科学院广州化学研究所广州510650 中国船舶重工集团公司第七一八研究所邯郸056027 中国科学院深圳先进技术研究院深圳518000

有机太阳能电池(organic solar cell, oscs)是一类重要的光伏器件,具有质量轻、易加工等优点,是光伏领域的研究热点之一。传统的有机太阳能电池采用经典的叠层结构,按照功能对叠层进行划分可分为电子传输层、活性层和空穴传输层。其中,... 详细信息

有机太阳能电池(organic solar cell, oscs)是一类重要的光伏器件,具有质量轻、易加工等优点,是光伏领域的研究热点之一。传统的有机太阳能电池采用经典的叠层结构,按照功能对叠层进行划分可分为电子传输层、活性层和空穴传输层。其中,活性层材料是实现从太阳能转换到电能的关键组分。活性层的材料种类、内部结构和表面形貌都会对整个光伏器件的能量转换效率(power conversion efficiencies, PCE)产生重要的影响。本文介绍了近年来oscs活性层材料(主要包括富勒烯和非富勒烯两大类)的研究进展,并对其发展趋势进行了展望。

关键词： oscs 活性层材料富勒烯非富勒烯

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oscs中Web服务注册子系统设计与实现

OSCS中Web服务注册子系统设计与实现

作者：李晓航电子科技大学

学位级别：硕士

Web服务(Web Services)技术已经逐渐显露出巨大的商业机会,这种基于XML的Web服务的主要目标就是在现在的各种异构平台的基础上构筑一个通用的与平台无关、语言无关的技术层,各种不同平台之上的应用依靠这个技术层来实现彼此的连接和集成... 详细信息

Web服务(Web Services)技术已经逐渐显露出巨大的商业机会,这种基于XML的Web服务的主要目标就是在现在的各种异构平台的基础上构筑一个通用的与平台无关、语言无关的技术层,各种不同平台之上的应用依靠这个技术层来实现彼此的连接和集成,Web服务对于企业应用集成有着无与伦比的优势。在众多Web服务的基础上,通过服务之间的组合可以形成新的服务,从而进一步提高Web服务的效率和创造新的价值,因此一个能够支持企业进行Web服务组合开发的平台级软件就显得尤为重要。针对上述需求,沈阳昂立信息技术有限公司开发了昂立Web服务组合系统,oscs(Only Web Services Composition System,oscs),该系统利用SOA的体系结构,结合支撑环境的思想,按照功能系统分成Web服务注册、服务的评价和维护、服务的组合和管理、图形化建模工具、动态服务选取和执行六个子系统。通过该系统可以将已有的Web服务按照业务流程进行逻辑上的合成,从而实现了Web服务的重用和增值,在原有的Web服务的基础上可以迅速的构建出一个新的应用。本文的主要工作是设计和实现了一个较为通用的Web服务注册系统。论文首先介绍了oscs的组成;其次,分析了OCSC中服务注册子系统的功能需求,根据系统的需求设计了Web服务注册系统的四层结构,详细描述了主要模块的功能和结构组成;然后,在UDDI规范的基础上,实现了一个支持oscs的web服务注册子系统;最后对系统进行了测试。系统的测试及运行情况表明,本文所实现的Web服务注册系统可以实现Web服务的注册和发布,有效支持面向服务的企业应用开发。

关键词： Web服务 oscs UDDI

基于转录组分析的绞股蓝氧化鲨烯环化酶的挖掘与鉴定

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基于转录组分析的绞股蓝氧化鲨烯环化酶的挖掘与鉴定

作者：邹丽秋北京协和医学院

学位级别：硕士

绞股蓝（Gyostemma pentoaphyllun（Thunb.）Makino）属于葫芦科绞股蓝属多年生草质藤本植物,其主要有效成分为绞股蓝皂苷,在叶片中含量最高,目前分离鉴定的绞股蓝皂苷已达160余种。现代药理学研究表明绞股蓝皂苷具有抗肿瘤、抗焦虑、... 详细信息

绞股蓝（Gyostemma pentoaphyllun（Thunb.）Makino）属于葫芦科绞股蓝属多年生草质藤本植物,其主要有效成分为绞股蓝皂苷,在叶片中含量最高,目前分离鉴定的绞股蓝皂苷已达160余种。现代药理学研究表明绞股蓝皂苷具有抗肿瘤、抗焦虑、抗动脉粥样硬化、调节免疫力、降血糖、降血脂等多种药理活性。绞股蓝皂苷属于三萜皂苷,因与人参皂苷具有相同或相似的化学结构而备受关注。氧化鲨烯环化酶（oscs）是绞股蓝皂苷三萜骨架结构合成的关键酶,本研究对绞股蓝oscs进行了克隆和鉴定,为进一步研究绞股蓝皂苷的合成与调控奠定了基础。植物信号分子茉莉酸甲酯（MeJA）可以诱导绞股蓝皂苷上游合成途径中的法尼基焦磷酸合酶（FPS）和鲨烯合酶（SS）基因上调表达,因此,我们推测参与绞股蓝皂苷合成的oscs基因也可能受MeJA调控。对MeJA处理0h,6h,12h,24h的绞股蓝叶的转录组进行了 Illumina测序,共获取202,535,156条raw reads,采用denovo组装共获得82,073条unigenes。通过基因注释和分类,发现在GO分析中,有22,662个unigenes得到注释,其中有45个基因参与次生代谢,有2,015个基因与代谢调节有关。在KEGG分析中,总共有291个基因与萜类代谢相关,其中有82个基因与萜类骨架合成相关,有42个基因与倍半萜和三萜的生物合成相关。根据序列比对和注释结果,筛选到5个绞股蓝oscs基因,分别为GpOSC1-5。序列分析发现在5个oscs中能找到oscs的保守基序DCTAE,MWCHCR和QW。利用real-time PCR技术对oscs进行组织特异性和MeJA诱导表达分析,发现GpOSC1在绞股蓝叶中高表达,其余4个基因在茎中表达量最高。MeJA对GpOSC1,4的表达具有抑制作用,GpOSC3,5的表达在MeJA处理的初期受到抑制,随后表达量逐渐升高,在处理24小时后表达量达到最高。进化树分析发现GpOSC1属于β-香树脂合酶类;GpOSC2属于环阿屯醇合酶类,与已鉴定的西葫芦（Cucurbita pepo）环阿屯醇合酶具有87.8%的相似性;GpOSC3属于羊毛甾醇合酶类,与丝瓜（Luffa aegyptiaca）的羊毛甾醇合酶具有77.1%的相似性;GpOSC4属于葫芦二烯醇合酶类,与已鉴定的葫芦二烯醇合酶的相似性均大于80%。GpOSC5属于isomultiflorenol 合酶类,与丝瓜（Luffa aegyptiaca）isomultiflorenol 合酶的相似性达到 82.3%。将基因GpOSCl-5分别克隆到酵母表达载体pYES2中,并转化酿酒酵母麦角甾醇缺陷型菌株GIL77。对外源基因诱导48小时后,离心收集菌体,碱法裂解细胞后用正己烷提取酶的催化产物,通过GC-MS分析,发现GpOSCl能够合成两个特异性产物（产物1和2）,GpOSC4能够合成一个特异性产物（产物3）。通过比较保留时间和质谱图,发现这三个产物与标准品达玛烯二醇Ⅱ、羽扇豆醇、葫芦二烯醇、桦木醇和β-香树脂等具有显著差异。通过核磁共振对3个产物的结构解析工作正在进行中。本研究通过转录组测序和基因的异源表达相结合,成功对绞股蓝oscs进行了功能鉴定,不但为绞股蓝皂苷的代谢工程与合成生物学研究提供了有用的元器件,也为通过分子育种提高绞股蓝皂苷含量提供了有力的理论支撑。

关键词：绞股蓝绞股蓝皂苷转录组 oscs

苝酰亚胺多倍体电子受体材料的合成及光伏应用

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苝酰亚胺多倍体电子受体材料的合成及光伏应用

V2O5作为阳极缓冲层对rubrene/C70太阳能电池性能的改善

中国化学会2017全国高分子学术论文报告会

作者：陈令成大连理工大学

In the past two years, oscs based on non-fullerene acceptors, are comparable or even superior to the fullerenetype devices. PDI derivatives, which have attracted significant attention and exhibited great potential due to their good electron-accepting ability, high electron mobility, especially their highly tunable electronic energy levels by chemical modification exhibit high PCE over 8% with a high Jsc over 18 m A cm in non-fullerene oscs.

关键词： oscs non-fullerene acceptors PDIs

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V2O5作为阳极缓冲层对rubrene/C70太阳能电池性能的改善