Abstract: The present invention relates to a process for preparing polycarbonate comprising copolymerizing an epoxy compound and carbon dioxide (CO2) in the presence of a catalytic system comprising: at least one catalyst selected from complexes of a transition metal; at least one co-catalyst selected from ionic compounds, as well as to a catalytic system comprising: at least one catalyst selected from complexes of a transition metal; at least one co-catalyst selected from ionic compounds.

Abstract: Polymer comprising an indacen-4-one derivative, said polymer having general formula (IX), (X) or (XI): in which: W and W1, Z and Y, R1 and R2, are as described; D represents an electron-donor group; A represents an electron-acceptor group; n is an integer ranging from 10 to 500.

Abstract: An inverted polymer photovoltaic cell (or solar cell) includes an anode; a first anodic interlayer (buffer layer) based on PEDOT:PSS [poly(3,4-ethylenedioxythiophene):polystyrene sulfonate]; an active layer having at least one photoactive organic polymer as an electron donor and at least one electron acceptor organic compound; a cathodic interlayer (buffer layer); and a cathode. A second anodic interlayer (buffer layer) includes at least one heteropolyacid and, optionally, at least one amino compound is placed between the first anodic interlayer (buffer layer) and the active layer. The inverted polymer photovoltaic cell (or solar cell) shows good values of photoelectric conversion efficiency (power conversion efficiency—PCE) (?) and, in particular, a good level of adhesion between the different layers, more specifically between the active layer and the first anodic interlayer (buffer layer).

Abstract: A semi-transparent perovskite-based photovoltaic cell (or solar cell), wherein the photoactive perovskite layer includes at least one polysaccharide-based inert polymer in an amount ranging between 0.5% by weight and 3.5% by weight, preferably ranging between 1% by weight and 3% by weight, more preferably ranging between 1.5% by weight and 2.8% by weight, with respect to the total weight of the perovskite precursors. The semi-transparent perovskite-based photovoltaic cell (or solar cell) can be advantageously used in various applications that require the production of electricity through the exploitation of light energy, in particular solar radiation energy such as, for example: building integrated photovoltaic (BIPV) systems; photovoltaic windows; greenhouses; photo-bioreactors; noise barriers; lighting; design; advertising; automotive industry. Said semi-transparent perovskite-based photovoltaic cell (or solar cell) can be used either in a “stand alone” mode or in modular systems.

Abstract: A lipophilic copolymer including polar multi-blocks having general formula (I): [(ByAk)s]t(AjCm)??(I) wherein: B represents at least one monomer unit deriving from a lipophilic monomer having general formula (II): wherein: X represents a hydrogen atom; or a methyl group; R is selected from C1-C50 alkyl groups, linear or branched; A represents at least one monomer unit deriving from a polar monomer selected from: (a) compounds having general formula (III): wherein X represents a hydrogen atom or a methyl group and n represents an integer comprised between 0 and 4; (b) (meth)acrylamide or (meth)acrylamides substituted on the nitrogen atom with one or two C1-C4 alkyl groups linear or branched; (c) di-(C1-C4)-alkylamino-(C1-C4)-alkyl (meth)acrylates; C represents at least one monomer unit deriving from a polar polyfunctional monomer having general formula (IV): Z—(W)p??(IV) wherein: Z represents a group containing carbon, hydrogen and, optionally, oxygen;

Abstract: A Process for producing an inverted polymer photovoltaic cell (or solar cell) includes the following steps providing an electron contact layer (cathode); depositing a cathodic buffer layer onto said electron contact layer; depositing a photoactive layer comprising at least one photoactive organic polymer and at least one organic electron acceptor compound onto the cathodic buffer layer; depositing an anodic buffer layer onto the photoactive layer; and providing a hole contact layer (anode). The step of depositing the cathodic buffer layer includes the steps of forming a layer onto the electron contact layer of a composition comprising having at least one zinc oxide and/or titanium dioxide or a precursor thereof, at least one organic solvent and at least one polymer soluble in the organic solvent; and plasma treating the layer formed onto the electron contact layer so as to form the cathodic buffer layer.

Abstract: There is a process for the preparation of polypropylene carbonate having the step of copolymerization of propylene oxide and carbon dioxide (CO2) in the presence of a catalytic system including: at least one catalyst selected from complexes of a transition metal having general formula (I): at least one co-catalyst selected from: (a) ionic compounds having general formula (II): and (b) ionic compounds having general formula (III)

Abstract: Polymeric photovoltaic cell (or solar cell) with an inverted structure comprising: an anode; a first anode buffer layer; an active layer comprising at least one photoactive organic polymer as the electron donor and at least one organic electron acceptor compound; a cathode buffer layer; a cathode; wherein between said first anode buffer layer and said active layer a second anode buffer layer is placed comprising a hole transporting material, said hole transporting material being obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with at least an equivalent amount of a salt or a complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters, preferably alcohols.

Abstract: Hole transporting material obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with an equivalent amount of at least one salt or one complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters. Said hole transporting material 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), either on a rigid support, or on a flexible support. Furthermore, said hole transporting material can be advantageously used in the construction of Organic Light Emitting Diodes (OLEDs), or of Organic Field Effect Transistors (OFETs).

Abstract: There is a process for preparing polycarbonate. The process has the step of copolymerizing an epoxy compound and carbon dioxide (CO2) in the presence of a catalytic system having at least one catalyst selected from complexes of a transition metal having general formula (I): The aforesaid process allows to obtain polycarbonates having a quantity of carbonate bonds in chain greater than 95% or polycarbonate/polyether copolymers having a quantity of ether bonds in chain ranging from 15% to 90%.

Abstract: Hole transporting material obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with an equivalent amount of at least one salt or one complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters. Said hole transporting material 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), either on a rigid support, or on a flexible support. Furthermore, said hole transporting material can be advantageously used in the construction of Organic Light Emitting Diodes (OLEDs), or of Organic Field Effect Transistors (OFETs).

Abstract: Polymer comprising an indacen-4-one derivative, said polymer having general formula (IX), (X) or (XI): in which: W and W1, Z and Y, R1 and R2, are as described; D represents an electron-donor group; A represents an electron-acceptor group; n is an integer ranging from 10 to 500.

Abstract: Indacen-4-one derivative having general formula (I) in which: —W and W1, which are the same or different, preferably the same, represent an oxygen atom; a sulfur atom; an N—R3 group in which R3 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups; —Z and Y, which are the same or different, preferably the same, represent a nitrogen atom; or a C—R4 group in which R4 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups, optionally substituted heteroaryl groups, linear or branched C1-C20, preferably C2-C10, alkoxyl groups, R5—O—[CH2—CH2—O]n— polyethyleneoxyl groups in which R5 is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, and n is an integer ranging from 1 to 4; —R6—OR7 groups in which R6 is selected from linear or branched C1-C20, preferably C2-C10, alkylene groups and R7 represents a hydrogen atom

Abstract: The present invention relates to a process for preparing polycarbonate comprising copolymerizing an epoxy compound and carbon dioxide (CO2) in the presence of a catalytic system comprising: at least one catalyst selected from complexes of a transition metal; at least one co-catalyst selected from ionic compounds, as well as to a catalytic system comprising: at least one catalyst selected from complexes of a transition metal; at least one co-catalyst selected from ionic compounds.

Abstract: Embodiments described herein provide functionalized carbon nanostructures for use in various devices, including photovoltaic devices (e.g., solar cells). In some cases, the carbon nanostructures are fullerenes substituted with one or more isobenzofulvene species and/or indane species. Devices including such materials may exhibit increased efficiency, increased open circuit potential, high electron/hole mobility, and/or low electrical resistance.

Abstract: Polymeric photovoltaic cell (or solar cell) with an inverted structure comprising: an anode; a first anode buffer layer; an active layer comprising at least one photoactive organic polymer as the electron donor and at least one organic electron acceptor compound; a cathode buffer layer; a cathode; wherein between said first anode buffer layer and said active layer a second anode buffer layer is placed comprising a hole transporting material, said hole transporting material being obtained through a process comprising: reacting at least one heteropoly acid containing at least one transition metal belonging to group 5 or 6 of the Periodic Table of the Elements; with at least an equivalent amount of a salt or a complex of a transition metal belonging to group 5 or 6 of the Periodic Table of the Elements with an organic anion, or with an organic ligand; in the presence of at least one organic solvent selected from alcohols, ketones, esters, preferably alcohols.

Abstract: An organic dye for a dye-sensitized solar cell (DSSC) comprising at least one electron-acceptor unit and at least one ?-conjugated unit is described. Said organic dye is particularly useful in a dye-sensitized photoelectric transformation element which, in its turn, can be used in a dye-sensitized solar cell (DSSC).

Abstract: Indacen-4-one derivative having general formula (I) in which: —W and W1, which are the same or different, preferably the same, represent an oxygen atom; a sulfur atom; an N—R3 group in which R3 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups; —Z and Y, which are the same or different, preferably the same, represent a nitrogen atom; or a C—R4 group in which R4 represents a hydrogen atom, or is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, optionally substituted cycloalkyl groups, optionally substituted aryl groups, optionally substituted heteroaryl groups, linear or branched C1-C20, preferably C2-C10, alkoxyl groups, R5—O—[CH2—CH2—O]n— polyethyleneoxyl groups in which R5 is selected from linear or branched C1-C20, preferably C2-C10, alkyl groups, and n is an integer ranging from 1 to 4; —R6—OR7 groups in which R6 is selected from linear or branched C1-C20, preferably C2-C10, alkylene groups and R7 represents a hydrogen atom

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:

Abstract: The present invention generally relates to cathode buffer materials and devices and methods comprising the cathode buffer materials.