Site-selective mono-oxidative addition of active zinc into carbon–bromine bond of dibrominated-thiophenes: preparation of thienylzinc reagents and their applications
摘要:
A facile protocol for the preparation of 3-bromo-2-thienylzinc bromide A and 5-bromo-2-thienylzinc bromide B has been developed. It has been successfully accomplished by a site-selective oxidative addition of active zinc into a chemically pseudo-equivalent or equivalent carbon-bromine bond, respectively. The subsequent cross-coupling reactions of the organozincs were also successfully carried out under mild conditions providing the corresponding products in moderate to high yields. (C) 2012 Elsevier Ltd. All rights reserved.
Preparation of aryl ketones via Ni-catalyzed Negishi-coupling reactions with acid chlorides
作者:Seung-Hoi Kim、Reuben D. Rieke
DOI:10.1016/j.tetlet.2011.01.135
日期:2011.3
A Ni-catalyst-catalyzed cross-coupling reaction of organozinc reagents with acid chlorides has been successfully developed. Mild reaction conditions were required to complete the coupling reactions affording the corresponding aryl ketones in good to excellent yields.
本发明公开一种基于不对称三噻吩并吡咯的有机染料及其制备方法和应用,属于太阳能电池技术领域。该类有机染料以三苯胺为电子给体,氰基丙烯酸为电子受体,以不对称三噻吩并吡咯单元为共轭桥连;三噻吩并吡咯单元具有刚性共平面化构型,电子云密度高,能够有效拓宽红移染料吸收光谱;同时,三噻吩并吡咯单元N‑取代基易于修饰,便于引入不同电子和空间效应基团,有助于调节分子能隙,降低染料聚集,提高电池器件的光电性能。本发明提供一种上述技术方案所述的基于不对称三噻吩并吡咯为共轭桥的有机染料在染料敏化太阳能电池中应用,测试结果表明:电池器件短路光电流密度达15.2 mA cm‑2,开路电压为885 mV,光电转化效率达到9.22%。
[EN] NON-FULLERENE ELECTRON ACCEPTORS<br/>[FR] ACCEPTEURS D'ÉLECTRONS SANS FULLERÈNE
申请人:IMPERIAL INNOVATIONS LTD
公开号:WO2017191468A1
公开(公告)日:2017-11-09
The invention provides electron acceptor compound of Formula (I) which may be used in organic compositions for optical or electronic devices.
Asymmetric 8H-Thieno[2′,3′:4,5]thieno[3,2-<i>b</i>]thieno[2,3-<i>d</i>]pyrrole-Based Sensitizers: Synthesis and Application in Dye-Sensitized Solar Cells
and used as a rigid and coplanar π-bridge to construct four new metal-free sensitizers W05–08. These dyessensitizedsolarcells exhibit high photocurrent due to strong light harvesting capability. Among these dyes, the W05-based cell in conjunction with cobalt(II/III) redox shuttle exhibits the best power conversion efficiency up to 9.22%.
合成了不对称的8H-thieno [2',3':4,5] thieno [3,2- b ] thieno [2,3- d ]吡咯(TTP)单元,并将其用作刚性和共面的π桥,建造四种新型无金属敏化剂W05 – 08。这些染料敏化的太阳能电池由于强的光收集能力而表现出高的光电流。在这些染料中,基于W05的电池与钴(II / III)氧化还原梭的结合显示出最佳的功率转换效率,最高可达9.22%。