Eni S.p.a.

Samuele Santarelli

Gabriele Bianchi

Roberto Fusco

Antonio Alfonso Proto

Marco Ricci

Andrea Alessi

A luminescent solar concentrator (LSC) comprising at least one tetra-substituted benzoheterodiazole compound having general formula (I): wherein: Rand R, equal to or different from each other, are selected from: C-C, preferably C-Caryl groups, optionally substituted; C-C, preferably C-C, heteroaryl groups, optionally substituted; Rand R, equal to or different from each other, are selected from: halogen atoms such as, for example, fluorine, chlorine, bromine, iodine, preferably fluorine; linear or branched C1-C30, preferably C-C, trihalogenated alkyl groups; C-C, preferably C-C, aryloxyl groups optionally substituted; linear or branched C-C, preferably C-C, alkoxyl groups optionally substituted; C-C, preferably C-C, heteroaryloxyl groups optionally substituted; Z represents a sulfur atom, an oxygen atom or a selenium atom; a NRgroup wherein Rrepresents a hydrogen atom, or it is selected from linear or branched C-C, preferably C-C, alkyl groups, optionally containing heteroatoms; a CRRgroup wherein Rand R, equal to or different from each other, represent a hydrogen atom, or they are selected from linear or branched C-C, preferably C-C, alkyl groups, optionally containing heteroatoms, linear or branched C-C, preferably C-C, alkoxyl groups, optionally substituted, C-C, preferably C-C, cycloalkyl groups, optionally substituted, or, Rand Rcan be optionally bound to each other to form, together with the other atoms to which they are bound, a cycle containing from 3 to 6 carbon atoms, saturated, unsaturated, or aromatic, optionally substituted with linear or branched C-C, preferably C-C, alkyl groups, said cycle optionally containing heteroatoms such as, for example, oxygen, sulfur, nitrogen, silicon, phosphorous, selenium. 

Luminescent solar concentrator comprising tetra-substituted benzoheterodiazole compounds

The invention relates to a significantly improved process for the preparation of benzothiadxazole compounds which can be used in the production of Luminescent Solar Concentrators, (LSC). In particular, the synthesis process of the present invention is oriented towards the preparation of 4,-di-2-thienyl-2,1,3-benzo-thiadiazole.

Process for the synthesis of benzothiadiazole compounds

Disubstituted naphthoheterodiazole compound having general formula (I): wherein: Said disubstituted naphthoheterodiazole compound having general formula (I) can be advantageously used as spectrum converter in luminescent solar concentrators (LSCs), in its turn capable of improving the performances of photovoltaic devices (or solar devices) selected, for example, from photovoltaic cells (or solar cells), photovoltaic modules (or solar modules), on both rigid and flexible supports.

Disubstituted naphthoheterodiazole compounds

Process for the preparation of a benzoheterodiazole compound disubstituted with benzodithiophene groups which comprises reacting at least one disubstituted benzoheterodiazole compound with at least one monostannylated benzodithiophene compound. Said benzoheterodiazole compound disubstituted with benzodithiophene groups can be advantageously used in the construction of luminescent solar concentrators (LSCs). Furthermore, said benzoheterodiazole compound disubstituted with benzodithiophene groups 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 both rigid and flexible supports. Furthermore, said benzoheterodiazole compound disubstituted with benzodithiophene groups can be advantageously used as precursor of monomeric units in the preparation of semiconductor polymers.

Process for the preparation of benzoheterodiazole compounds disubstituted with benzodithiophene groups

Luminescent solar concentrator (LSC) includes at least one disubstituted benzothiadiazole compound having general formula (I): 

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Novara, Italy

Samuele Santarelli