Abstract: The present invention relates to a process for the preparation of benzodithiophene compounds which comprises reacting a derivative of 3,3?-bithiophene with at least one internal alkyne. Said benzodithiophene compounds can be suitably functionalized and polymerized to give electron-donor compounds which can be used in photovoltaic devices such as, for example, photovoltaic cells, photovoltaic modules, solar cells, solar modules, on both rigid and flexible supports. Furthermore said benzodithiophene compounds can be advantageously used as spectrum converter in luminescent solar concentrators (LSCs). Said benzodithiophene compound can also be advantageously used as precursor of monomeric units in the preparation of semiconductor polymers.

Abstract: Process for the preparation of a benzohetero[1,3]diazole compound disubstituted with heteroaryl groups which comprises reacting at least one benzohetero[1,3]diazole compound disubstituted with at least one heteroaryl compound. Said benzohetero[1,3]diazole compound disubstituted with heteroaryl groups can be advantageously used in the construction of luminescent solar concentrators (LSC). Furthermore, said benzohetero[1,3]diazole compound disubstituted with heteroaryl groups can be advantageously used in the construction of photovoltaic devices such as, for example, photovoltaic cells, photovoltaic modules, solar cells, solar modules, on both a rigid and flexible support. Said benzohetero[1,3]diazole compound disubstituted with heteroaryl groups can also be advantageously used as a precursor of monomeric units in the preparation of semiconductor polymers.

Abstract: Process for the preparation of a benzodithiophene compound which comprises reacting at least one monohalogenated dithiophene compound with at least one internal alkyne, in the presence of at least one catalyst containing palladium and of at least one co-catalyst containing copper in oxidation state +1. Said benzodithiophene compound, after suitable functionalization and polymerization, can be advantageously used in the construction of photovoltaic devices (or solar devices) such as, for example, photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on either rigid and flexible supports. Furthermore, said benzodithiophene compound can be advantageously used as a constituent unit of luminescent solar concentrators (LSCS). Said benzodithiophene compound can also be advantageously used as a precursor of monomeric units in the preparation of semiconductor polymers.

Abstract: The present invention relates to an alternating or statistical conjugated copolymer comprising: at least one benzotriazole unit B having general formula (Ia) or (Ib): wherein the group R is selected from alkyl, aryl, acyl or thioacyl groups, possibly substituted; at least one conjugated structural unit A, wherein each unit B is connected with at least one unit A in any of the positions 4, 5, 6 or 7, preferably in positions 4 or 7.

Abstract: The present invention relates to a photoluminescent composition comprising an acene compound having general formula (I) or (Ia) and a benzothiadiazole compound having general formula (II), and the relative use as photoluminescent composition in a spectrum converter. A spectrum converter comprising the photoluminescent composition defined above, comprising the above compounds having general formula (I) or (Ia) and (II) and a solar device comprising said spectrum converter, are also described.

Abstract: Monomers having formula (I) and process for their synthesis which comprises the etherification reaction of a halogen-derivative (Z?Cl, Br, I) having formula (III) with the hydroxyl group of the glycerol derivative (IV), according to the following scheme:(Formula III, IV & I) (III) (IV) (I)

Abstract: The present invention relates to copolymers for solar cells based on acridonic units comprising: a monomeric unit (A) having general formula (I) wherein X is S or Se, Y is 0, S or NR? and R?, R?, the same or different, are C4-C24 alkyl groups, aryl groups optionally substituted with other functional groups, acyl groups or thioacyl groups; at least one monomer unit (B) having general formula (II) wherein Z is 0, S, Se or N—R?, wherein R? is a C4-C24 alkyl group, an aryl group op-tionally substituted with other functional groups, an acyl group or thioacyl group, said monomeric unit (B) being connected to any position available of a hetero-aromatic side ring of the unit (A) through one of the two positions indicated by the dashed lines in general formula (II). Photovoltaic devices comprising said alternating ?-conjugated polymers are also described.

Abstract: The present invention relates to an alternating or statistical conjugated copolymer comprising: at least one benzotriazole unit B having general formula (Ia) or (Ib): wherein the group R is selected from alkyl, aryl, acyl or thioacyl groups, possibly substituted; at least one conjugated structural unit A, wherein each unit B is connected with at least one unit A in any of the positions 4, 5, 6 or 7, preferably in positions 4 or 7.

Abstract: Process for the preparation of block copolymers, based on vinylaromatic monomers and monomers deriving from (meth)acrylic acid by means of radicalic polymerization which comprises polymerizing the monomers at a temperature higher than or equal to 120° C.

Abstract: Process for the preparation of block copolymers, based on vinylaromatic monomers and monomers deriving from (meth)acrylic acid by means of radicalic polymerization which comprises polymerizing the monomers at a temperature higher than or equal to 120° C., in the presence of a radicalic initiating system comprising a compound having general Formula (I).

Abstract: Process for the preparation of 1,1,3,3-tetra-alkyl derivatives of isoindoline which comprises the transformation of N-benzylphthalimide into N-benzyl-1,1,3,3-tetra-alkylisoindoline by means of treatment with a Grignard reagent prepared in methyl-tert-butyl ether starting from magnesium and an alkyl halide and subjecting the intermediate thus obtained to a hydrogenolysis reaction in the presence of hydrogen and a catalyst based on supported palladium.

Abstract: The present invention relates to metallocene compounds consisting of indenyl-cyclopentadienyl groups non-symmetrically joined by a bivalent radical. Said compounds can be conveniently used as components of catalysts for the polymerization of olefins.

Abstract: Process for the polymerization of unsaturated vinyl and/or vinylidene monomers which comprises reacting one or more monomers in the presence of heterocyclic initiators having a nitrogen atom bound to an oxygen atom at a temperature ranging from 100 to 130° C.

Abstract: Process for the polymerization of unsaturated vinyl and/or vinylidene monomers which comprises reacting one or more monomers in the presence of heterocyclic initiators having a nitrogen atom bound to an oxygen atom at a temperature ranging from 100 to 130° C.

Abstract: Polyolefins modified by radical grafting with an unsaturated polyfunctional compound containing an imide group and an ester group having general formula (I): ##STR1##

Abstract: Diethers of general formula: ##STR1## where R, R.sup.I, R.sup.II, R.sup.III, R.sup.IV and R.sup.V are the same or different and are H, C.sub.1-18 linear or branched alkyl, C.sub.5-18 cycloalkyl, C.sub.6.about. aryl, C.sub.7-18 alkylaryl or C.sub.7-18 arylalkyl radicals, provided that when R is alkyl, R.sup.I is other than H or alkyl and when R.sup.I is alkyl, R is other than H or alkyl; R.sup.VI and R.sup.VIII are the same or different and are C.sub.1-18 linear or branched alkyl, C.sub.5-18 cycloalkyl, C.sub.6-18 aryl, or C.sub.7-18 arylalkyl radicals; and two or more of R to R.sup.V may be bonded to form a cyclic structure having 5 to 18 carbon atoms.The diethers are particularly useful in the preparation of Ziegler-Natta catalysts.