English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Poly[3-(6-bromohexyl)thiophene] (1) and poly[3-(12-bromododecyl)thiophene] (2) were synthesized by chemical polymerization of their respective monomers, 3 and 4, using FeCl3. NMR spectroscopy showed 81% of head-to-tail couplings and GPC showed M n = 51,500 and 91,100 with PDIs of 5.2 and 1.7 for 1 and 2, respectively. Conductivities of the I2- and FeCl3doped 1 were 18 and 7.5 S cm -1 and for 2 were 32 and 46 S cm -1 , respectively. Poly[3-(6iodohexyl)thiophene] (8) was prepared by SN2 displacement (>97%), using NaI, on 1. Poly[6-(3thienyl)-1-hexyl S-thioacetate] (10a) and poly[12-(3-thienyl)-1-dodecyl S-thioacetate] (10b) were prepared from 1 by post-polymerization SN2 reactions. They were insoluble in organic solvents and had 13 C CP-MAS NMR spectra consistent with the structures. Reaction of 1 with thiourea followed by basic hydrolysis gave poly[3-(6-mercaptohexyl)thiophene] (11). This thiol functionalized polymer was also insoluble in common organic solvents and it, too, had a 13 C CPMAS NMR spectrum consistent with the structure. Polymers 10a and 11 showed pressed pellet conductivities of 4 x 10 -5 and 2.3 x 10 -2 S cm -1 when doped with FeCl3, respectively and 8 x 10 -5 and 0.44 S cm -1 when doped with I2, respectively. TGA of polymers 1, 8 and 11 showed thermal decomposition in two stages.

arkivoc

Synthesis and study of poly(3-hexylthiophenes) and poly(3-dodecylthiophenes) containing halogen and sulfur substituents in the ω-position of the side chain