TY - JOUR

T1 - Synthesis of ferrocenyl-containing silicone rubbers via platinum-catalyzed Si–H self-cross-linking

AU - Deriabin, Konstantin V.

AU - Lobanovskaia, Ekaterina K.

AU - Kirichenko, Sergey O.

AU - Barshutina, Marie N.

AU - Musienko, Pavel E.

AU - Islamova, Regina M.

PY - 2019/11/19

Y1 - 2019/11/19

N2 - Self-cross-linkable ferrocenyl-containing polymethylhydrosiloxanes were synthesized. Karstedt's catalyst and cis-[PtCl2(BnCN)2] were examined as cross-linking catalysts at room temperature for the reaction between Si–H groups of the ferrocenyl-containing polymethylhydrosiloxanes. Cis-[PtCl2(BnCN)2] is an effective catalyst that allows cross-linked ferrocenyl-containing silicones (silicone rubbers) to be obtained with no visible mechanical defects (bubbles or cracks) compared with Karstedt's catalyst. The ferrocene content of the ferrocenyl-containing silicone rubbers was found to be approximately 50 wt.% by energy-dispersive X-ray analysis. Compared with cross-linked non-modified polymethylhydrosiloxanes, the ferrocenyl-containing silicone rubbers exhibited improved tensile properties (the tensile strength increased from 0.47 to 0.75 MPa) and a 1.5–2.5 times lower cross-linking degree. The surface resistivity of the ferrocenyl-containing silicone rubbers (50 wt.% ferrocenyl units) was approximately 7 × 109 Ω/□, which was 10,000 times lower than that of pure polymethylhydrosiloxane. The obtained flexible electroactive ferrocenyl-containing silicone rubbers can potentially be applied as coatings for electronic and electrostatic-sensitive devices, interfaces, and sensors.

AB - Self-cross-linkable ferrocenyl-containing polymethylhydrosiloxanes were synthesized. Karstedt's catalyst and cis-[PtCl2(BnCN)2] were examined as cross-linking catalysts at room temperature for the reaction between Si–H groups of the ferrocenyl-containing polymethylhydrosiloxanes. Cis-[PtCl2(BnCN)2] is an effective catalyst that allows cross-linked ferrocenyl-containing silicones (silicone rubbers) to be obtained with no visible mechanical defects (bubbles or cracks) compared with Karstedt's catalyst. The ferrocene content of the ferrocenyl-containing silicone rubbers was found to be approximately 50 wt.% by energy-dispersive X-ray analysis. Compared with cross-linked non-modified polymethylhydrosiloxanes, the ferrocenyl-containing silicone rubbers exhibited improved tensile properties (the tensile strength increased from 0.47 to 0.75 MPa) and a 1.5–2.5 times lower cross-linking degree. The surface resistivity of the ferrocenyl-containing silicone rubbers (50 wt.% ferrocenyl units) was approximately 7 × 109 Ω/□, which was 10,000 times lower than that of pure polymethylhydrosiloxane. The obtained flexible electroactive ferrocenyl-containing silicone rubbers can potentially be applied as coatings for electronic and electrostatic-sensitive devices, interfaces, and sensors.

KW - coatings

KW - ferrocenyl-containing polymethylhydrosiloxanes

KW - platinum(0) and (II) catalysts

KW - redox-active silicone rubbers

KW - self-cross-linking

KW - POLYMERS

KW - ROUTE

KW - ELECTRICAL-CONDUCTIVITY

KW - HYDROSILYLATION

KW - RELAXATION

KW - COMPOSITES

KW - CYCLIC SILOXANES

KW - POLYSILOXANES

UR - http://www.scopus.com/inward/record.url?scp=85075155751&partnerID=8YFLogxK

U2 - 10.1002/aoc.5300

DO - 10.1002/aoc.5300

M3 - Article

AN - SCOPUS:85075155751

JO - Applied Organometallic Chemistry

JF - Applied Organometallic Chemistry

SN - 0268-2605

M1 - e5300

ER -