Silicone composition and organic light-emitting diode
AssigneeDow Corning Corporation
InventorsToshio Suzuki, David Witker
Life of this patent
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Abstract
A silicone composition comprising (A) a hydrolysis product prepared by reacting at least one thiophenyl-substituted silane and a cross-linking agent with water in the presence of an organic solvent to form an organic phase containing the hydrolysis product and an aqueous phase, and separating the organic phase from the aqueous phase, and (B) an organic solvent; and an organic light-emitting diode (OLED) containing a hole-transport/hole-injection layer comprising a cured polysiloxane prepared by applying the aforementioned silicone composition to form a film and curing the film.
Claims10
A silicone composition comprising:
- (A) a hydrolysis product prepared by reacting (a) at least one thiophenyl-substituted silane having the formula Th—(CH2)m+2SiR1nX3-n, and (b) a cross-linking agent selected from (i) at least one silane having the formula (R3bSiX4-b), (ii) at least one organic compound having an average of at least two silyl groups per molecule, wherein the silyl groups have the formula —SiR3cX3-c, and (iii) a mixture comprising (i) and (ii), with water in the presence of an organic solvent to form an organic phase containing the hydrolysis product and an aqueous phase, and separating the organic phase from the aqueous phase, wherein R1 is C1 to C10 hydrocarbyl free of aliphatic unsaturation, X is a hydrolysable group, Th is thiophenyl or substituted thiophenyl, R3 is C1 to C10 hydrocarbyl or —H, m is 0 to 10, n is 0, 1, or 2, b is 0 or 1, and c is 0, 1, or 2;
- and
- (B) an organic solvent.
An organic light-emitting diode comprising:
- a substrate having a first opposing surface and a second opposing surface;
- a first electrode layer overlying the first opposing surface;
- a light-emitting element overlying the first electrode layer, the light-emitting element comprising
- an emissive/electron-transport layer, and
- a hole-transport/hole-injection layer, wherein the hole-transport/hole-injection layer comprises a cured polysiloxane prepared by applying a silicone composition to form a film and curing the film, wherein the silicone composition comprises (A) a hydrolysis product prepared by reacting (a) at least one thiophenyl-substituted silane having the formula Th—(CH2)m+2SiR1nX3-n, and (b) a cross-linking agent selected from (i) at least one silane having the formula (R3bSiX4-b), (ii) at least one organic compound having an average of at least two silyl groups per molecule, wherein the silyl groups have the formula —SiR3cX3-c, and (iii) a mixture comprising (i) and (ii), with water in the presence of an organic solvent to form an organic phase containing the hydrolysis product and an aqueous phase, and separating the organic phase from the aqueous phase, wherein R1 is C1 to C10 hydrocarbyl free of aliphatic unsaturation, X is a hydrolysable group, Th is thiophenyl or substituted thiophenyl, R3 is C1 to C10 hydrocarbyl or —H, m is 0 to 10, n is 0, 1, or 2, b is 0 or 1, and c is 0, 1, or 2;
- and (B) an organic solvent;
- and
- a second electrode layer overlying the light-emitting element.
Dependencies are inferred from the claim text.