[EN] C(SP3)-C(SP2) CROSS-COUPLING REACTION OF ORGANOZINC REAGENTS AND HETEROCYCLIC (PSEUDO)HALIDES<br/>[FR] RÉACTION DE COUPLAGE CROISÉ C(SP3)-C(SP2) DE RÉACTIFS D'ORGANOZINC ET DE (PSEUDO)HALOGÉNURES HÉTÉROCYCLIQUES
申请人:UNIV HONG KONG SCI & TECH
公开号:WO2018019291A1
公开(公告)日:2018-02-01
Provided is a method of synthesizing a C(sp3)-C(sp2) cross-coupled compound comprising reacting a C(sp3) coupling partner with a C(sp2) coupling partner, a catalyst, and a solvent; wherein the C(sp3) coupling partner comprises an organic zinc reagent; and wherein the C(sp2) coupling partner comprises a heterocyclic halide or a heterocyclic pseudo halide. The method further comprises synthesis of the organic zinc reagent, wherein the synthesis comprises reacting a zinc powder with an acid, filtering, washing, and drying to obtain an activated zinc powder; and reacting the activated zinc powder with a metal iodide catalyst and a second solvent and heating for a predetermined time to obtain the organic zinc reagent.
[EN] CONJUGATED POLYMERS CONTAINING ALKYL AND ALKYL ESTER SIDE CHAINS<br/>[FR] POLYMÈRES CONJUGUÉS CONTENANT DES CHAÎNES LATÉRALES DE TYPE ALKYLE ET ESTER D'ALKYLE
申请人:UNIV HONG KONG SCI & TECH
公开号:WO2017223407A1
公开(公告)日:2017-12-28
The present invention is a conjugated polymer that contains both Unit (I) and Unit (II) is shown below: X, in each occurrence, is independently selected from S or Se. M1 and M2 are independently selected from H or F. R1 and R2 are independently selected from straight-chain, branched or cyclic alkyl groups with 1-40 C atoms. The number ratio of Unit (I) and Unit (II) in the polymer chain ranges from 9: 1 to 1 :9.
Synthesis and characterization of two fluorenone-based conjugated polymers and their application in solar cells and thin film transistors
作者:Chia Juan Lim、Yanlian Lei、Bo Wu、Lu Li、Xuyao Liu、Yong Lu、Furong Zhu、Beng S. Ong、Xiao Hu、Siu-Choon Ng
DOI:10.1016/j.tetlet.2016.02.048
日期:2016.3
fluorenone-based conjugated polymers, F1 and F2, were synthesized via the Stille cross-coupling polymerization. Spectral measurements showed that both polymers had optical band gaps of 1.99 eV and 1.89 eV, respectively, calculated based on the film onset absorption edge. Cyclic voltammetric studies gave HOMO/LUMO energy levels of −5.18 eV/−3.19 eV and −5.40 eV/−3.51 eV, respectively, and the polymers were thermally
通过Stille交叉偶联聚合反应合成了两种新的基于芴酮的共轭聚合物F1和F2。光谱测量结果表明,两种聚合物的光学带隙分别为1.99 eV和1.89 eV,这是基于薄膜的起始吸收边缘计算得出的。循环伏安法研究得出HOMO / LUMO能级分别为-5.18 eV / -3.19 eV和-5.40 eV / -3.51 eV,并且该聚合物在300°C以上的温度下具有热稳定性。评价了两种聚合物作为p型半导体的有机场效应晶体管和体异质结太阳能电池的性能特征。
Cobalt-Catalyzed Reductive Alkylation of Heteroaryl Bromides: One-Pot Access to Alkylthiophenes, -furans, -selenophenes, and -pyrroles
作者:Deng-Jhou Cai、Po-Han Lin、Ching-Yuan Liu
DOI:10.1002/ejoc.201500784
日期:2015.8
A practical and convenient Co-catalyzed alkylation method for the facile introduction of various alkyl chains into organic electronically significant heteroaryl compounds, including thiophenes, furans, selenophenes, and pyrroles, is reported. Under well-optimized reaction conditions, a wide range of alkylated heteroaryl compounds have beeen efficiently prepared in moderate to good isolated yields.
Precise control of the molecular arrangements at the interface between the electrondonor and acceptor in mixed bulk heterojunctions (BHJs) remains challenging, despite the correlation between structural characteristics and efficiency in organic photovoltaics (OPVs). This study reveals that the substitution patterns of linear and branched alkyl side chains on electron‐donating/‐accepting alternating copolymers