[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.
Synthesis and optical properties of photovoltaic materials based on the ambipolar dithienonaphthothiadiazole unit
作者:Tatsuaki Nakanishi、Yasuhiro Shirai、Liyuan Han
DOI:10.1039/c4ta05101g
日期:——
Dithieno[3′2′:5,6;2′′,3′′:7,8]naphtho[2,3-c][1,2,5]thiadiazole (DTNT) was designed to control the band energies of the polymers for photovoltaic materials.
[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.
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