摘要:
A polychrome electrophoretic ink including at least four types of particles dispersed in a nonpolar organic medium, each particle type containing a pigment of a color which is associated therewith, having a positive or negative electrostatic charge, characterized in that at least one of the abovementioned particle types has a magnetic property (magnetic core) such that each particle type can migrate in a predetermined manner under the combined action of an electrostatic force and of a magnetic return force.
摘要:
A copolymer including units derived from fluoro monomers of formula (I): CX1X2═CX3X4 (I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, the H and/or F atoms of the fluoro monomers being partially replaced with photoactive groups of formula —Y—Ar—R in the copolymer; Y representing an oxygen atom or an NH group or a sulfur atom, Ar representing an aryl group, preferably a phenyl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms. The fluoro monomers of formula (I) of the copolymer include vinylidene fluoride and trifluoroethylene. Also, a process for preparing this copolymer, a composition including this copolymer, and a film obtained from the copolymer.
摘要:
The invention relates to a process for reducing the defectivity of a block copolymer (BCP1) film, the lower surface of which is in contact with a preneutralized surface (N) of a substrate (S) and the upper surface of which is covered by an upper surface neutralization layer (TC) in order to make it possible to obtain an orientation of the nanodomains of the block copolymer (BCP1) perpendicularly to the two lower and upper interfaces, where the upper surface neutralization layer (TC) employed to cover the upper surface of the block copolymer (BCP1) film comprises a second block copolymer (BCP2).
摘要:
The invention relates to a copolymer comprising units derived from monomers of vinylidene fluoride and/or trifluoroethylene, as well as fluorinated monomers X comprising a double bond and a leaving group selected from among chlorine, bromine and iodine atoms, the leaving groups being partially replaced by azide groups in the copolymer.
摘要:
The invention relates to a process that enables the creation of nanometric structures by self-assembly of block copolymers, at least one of the blocks of which results from the polymerization of monomers comprising at least one cyclic entity corresponding to the formula I. where X═Si(R1,R2); Ge(R1,R2) Z═Si(R3,R4); Ge(R3,R4); O; S; C(R3,R4) Y═O; S; C(R5,R6) T=O; S; C(R7,R8) R1, R2, R3, R4, R5, R6, R7, R8 are selected from hydrogen, linear, branched or cyclic alkyl groups, with or without heteroatoms, and aromatic groups with or without heteroatoms.
摘要:
The present invention relates to the field of organic electronics for photovoltaic energy, i.e. conversion of light energy into electricity. More particularly, this invention relates to a method of fabrication of an active layer capable of emitting an electric current under light irradiation combining a ferroelectric polymer material and a semiconducting polymer for converting light energy into electricity.
摘要:
A copolymer including fluorinated units of formula (I): —CX1X2—CX3X4— (I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated; and fluorinated units of formula (II): —CX5X6—CX7Z— (II) in which each of the X5, X6 and X7 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, and in which Z is a photoactive group of formula —Y—Ar—R, Y representing an oxygen atom or an NH group or a sulfur atom, Ar representing an aryl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms. Also, a process for preparing this copolymer, a composition including this copolymer, and a film obtained from this copolymer.
摘要:
A polymer including VDF-based units having an electrocaloric effect under the effect of a variable electric field. The polymer includes 0.1 to 10.0 mol % double bonds, which are substantially non-conjugated. Also, a corresponding composition including the polymer, a corresponding film including the polymer, and to various uses of the polymer.
摘要:
A copolymer including fluorinated units of formula (I): —CX1X2—CX3X4— (I) in which each of the X1, X2, X3 and X4 is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated; and units of formula (III): —CXAXB—CXCZ— (III) in which each of the XA, XB and XC is independently chosen from H, F and alkyl groups including from 1 to 3 carbon atoms which are optionally partially or totally fluorinated, and Z being a polarizable group of formula —Y—Ar—R; Y representing an O atom or an S atom or an NH group, Ar representing an aryl group, and R being a monodentate or bidentate group including from 1 to 30 carbon atoms; and the copolymer having a heat of fusion of greater than or equal to 5 J/g. Also a process, a composition, an ink and a film.