Wakioka, Masayuki published the artcileSynthesis of a 1,2-dithienylethene-containing donor-acceptor polymer via palladium-catalyzed direct arylation polymerization (DArP), Product Details of C20H28B2O4S2, the publication is Molecules (2018), 23(4), 981/1-981/10, database is CAplus and MEDLINE.
This paper reports the synthesis of D-A polymers containing 1,2-dithienylethene (DTE) units via palladium-catalyzed direct arylation polymerization (DArP). The reaction of dibromoisoindigo (1-Br) and DTE (2-H), in the presence of Pd2(dba)3·CHCl3 (0.5 mol%), P(2-MeOC6H4)3 (L1) (2 mol%), pivalic acid (1 equiv) as catalyst precursors, and Cs2CO3 (3 equiv) as a base affords poly(1-alt-2) with a high mol. weight (Mn up to 44,900). Although, it has been known that monomers, with plural C-H bonds, tend to form insoluble materials via direct arylation at undesirable C-H positions; the reaction of 1-Br and 2-H cleanly proceeds without insolubilization. The resulting polymer has a well-controlled structure and exhibits good charge transfer characteristics in an organic field-effect transistor (OFET), compared to the polymer produced by Migita-Kosugi-Stille cross-coupling polymerization The DArP product displays an ideal linear relationship in the current-voltage curve, whereas the Migita-Kosugi-Stille product shows a VG-dependent change in the charge mobility.
Molecules published new progress about 239075-02-6. 239075-02-6 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Boronic acid and ester,Boronate Esters, name is 5,5′-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-2,2′-bithiophene, and the molecular formula is C8H6ClF3, Product Details of C20H28B2O4S2.
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