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

Indacenodithiophene (IDT) based materials are emerging high performanceconjugated polymers for use in efficient organic photovoltaics and transistors.However, their preparation generally suffers from long reaction sequences andis often accomplished using disadvantageous Stille couplings. Herein, wepresent detailed synthesis pathways to IDT homopolymers using C-H activationfor all C-C coupling steps. Polyketones are first prepared by direct arylationpolycondensation (DAP) in quantitative yield and further cyclized polymeranalogously. This protocol is suitable for obtaining structurally well-definedIDT homopolymers, provided that the conditions for cyclization are chosenappropriately and that side reactions are suppressed. Moreover, this polymeranalogous pathway gives rise to asymmetric side chain patterns, which allows tofine tune physical properties. Alternatively, IDT homopolymers can be obtainedvia oxidative direct arylation polycondensation of IDT monomers (oxDAP),leading to IDT homopolymers with similar properties but at reduced yield.Detailed characterization by NMR, IR, UV-vis and PL spectroscopy, and thermalproperties, is used to guide synthesis and to explain varying field-effecttransistor hole mobilities in the range of 10-6- 10-3 cm2/Vs.

Indacenodithiophene homopolymers via direct arylation: direct polycondensation versus polymer analogous reaction pathways