The use of siloxanes, silsesquioxanes, and silicones in organic semiconducting materials

Abstract

Optimization of the physical and electronic properties of organic semiconductors is a key step in improving the performance of organic light emitting diodes, organic photovoltaics, organic field effect transistors, and other electronic devices. Separate tuning of the physical and electronic properties of these organic semiconductors can be achieved by the hybridization of organo-silicon structures (silicones, siloxanes, silsesquioxanes) with organic semiconductors. Common chemical means to achieve this hybridization are summarized while a large range of literature examples are covered to demonstrate the range and flexibility of this synthetic strategy.

Self-healing polymer nanocomposites based on Diels-Alder-reactions with silica nanoparticles: The role of the polymer matrix

“…Furthermore, the signals for the furyl group and the alkyl chain can be identified. PDMS H-terminated S1-E S1 2120 ν(Si-H) disappears in hydrosilylation Figure 6: FTIR spectra of H-terminated PDMS S1 before and after modification with 2-(11-undecenyl)-furan (2) α,ω-Diaminopropyl-PDMS and aminopropylmethylsiloxane-co-dimethylsiloxane copolymer were modified according to a literature procedure to afford the maleimidopropyl-PDMS (Scheme 5). [3c, 13, 17] In the first step, the aminopropyl-PDMS was treated with maleic anhydride followed by a ring closure with zinc chloride and hexamethyldisilazane.…”

“…Polysiloxanes are widely used in high-tech applications based on their unique properties such as high flexibility, abrasion and heat resistance, chemical inertness, high transparency, and excellent adhesion to various surfaces. [2] For self-healing applications particularly the extraordinary backbone flexibility is a key property for reversible bond formation. Several self-healing mechanisms applying polysiloxane based structures M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 3 …”

Solution-Processed Blue/Deep Blue and White Phosphorescent Organic Light-Emitting Diodes (PhOLEDs) Hosted by a Polysiloxane Derivative with Pendant mCP (1,3-bis(9-carbazolyl)benzene)

“…To improve thermal, electrochemical, and morphological stability and to enhance the film-forming ability of organic 5 semiconductors, siloxanes have been combined with organic molecular structures; this has a minimal effect on the electronic properties of the materials. [42][43][44][45][46][47] Previously a polytetraphenylsilane derivative with a pendant carbazole unit 48 and a bipolar poly(phenylcarbazole-alt-triphenylphosphine oxide) siloxane 49 have served as hosts for blue and deep blue phosphors. We now report the synthesis of the new mCP-modified polysiloxane (PmCPSi) which incorporates mCP moieties as pendant groups linked via a phenoxy spacer unit, which is designed to remove the detrimental steric crowding between the siloxane backbone and the mCP units observed in a previous oligomer.…”

Fifty Years of Hydrosilylation in Polymer Science: A Review of Current Trends of Low-Cost Transition-Metal and Metal-Free Catalysts, Non-Thermally Triggered Hydrosilylation Reactions, and Industrial Applications

“…Hydrosilylation is a versatile reaction delivering materials for fields of application comprising anti-fouling coatings and coatings for medic(in)al applications [127,128], as well as functionalized surfaces and packaging materials for electronic applications [129,130], organic, and hybridorganic/inorganic semiconductors [131,132].…”