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      Fulereno[C60]: química e aplicações Translated title: Fullerene C60: chemistry and applications

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          Translated abstract

          Fullerene chemistry has become a very active research field in the two last decades, largely because of the exceptional properties of the C60 molecule and the variety of fullerene derivatives that appear to be possible. In this review, a general analysis of fullerene C60 reactivity is performed. The principal methods for the covalent modification of this fascinating carbon cage are presented. The prospects of using fullerene derivatives as medicinal drugs and photoactive materials in light converting devices are demonstrated.

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          Solid-state dye-sensitized solar cells using red and near-IR absorbing Bodipy sensitizers.

          Safacan Kolemen, Yusuf Ozgur Cakmak, Sule Erten-Ela … (2010)
          Boron-dipyrrin dyes, through rational design, yield promising new materials. With strong electron-donor functionalities and anchoring groups for attachment to nanocrystalline TiO(2), these dyes proved useful as sensitizers in dye-sensitized solar cells. Their applicability in a solid-state electrolyte regime offers additional opportunities for practical applications.
          Article 0 comments Cited 142 times – based on 0 reviews     Review now
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            Exploiting the Brønsted Acidity of Phosphinecarboxamides for the Synthesis of New Phosphides and Phosphines

            Andrew R Jupp, Gemma Trott, Éléonore Payen de la Garanderie … (2015)
            We demonstrate that the synthesis of new N-functionalized phosphinecarboxamides is possible by reaction of primary and secondary amines with PCO− in the presence of a proton source. These reactions proceed with varying degrees of success, and although primary amines generally afford the corresponding phosphinecarboxamides in good yields, secondary amines react more sluggishly and often give rise to significant decomposition of the 2-phosphaethynolate precursor. Of the new N-derivatized phosphinecarboxamides available, PH2C(O)NHCy (Cy=cyclohexyl) can be obtained in sufficiently high yields to allow for the exploration of its Brønsted acidity. Thus, deprotonating PH2C(O)NHCy with one equivalent of potassium bis(trimethylsilyl)amide (KHMDS) gave the new phosphide [PHC(O)NHCy]−. In contrast, deprotonation with half of an equivalent gives rise to [P{C(O)NHCy}2]− and PH3. These phosphides can be employed to give new phosphines by reactions with electrophiles, thus demonstrating their enormous potential as chemical building blocks.
            Article 0 comments Cited 128 times – based on 0 reviews     Review now
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              Polymer/Nanocrystal Hybrid Solar Cells: Influence of Molecular Precursor Design on Film Nanomorphology, Charge Generation and Device Performance

              Andrew J MacLachlan, Thomas Rath, Ute Cappel … (2014)
              In this work, molecular tuning of metal xanthate precursors is shown to have a marked effect on the heterojunction morphology of hybrid poly(3-hexylthiophene-2,5-diyl) (P3HT)/CdS blends and, as a result, the photochemical processes and overall performance of in situ fabricated hybrid solar cells. A series of cadmium xanthate complexes is synthesized for use as in situ precursors to cadmium sulfide nanoparticles in hybrid P3HT/CdS solar cells. The formation of CdS domains is studied by simultaneous GIWAXS (grazing incidence wide-angle X-ray scattering) and GISAXS (grazing incidence small-angle X-ray scattering), revealing knowledge about crystal growth and the formation of different morphologies observed using TEM (transmission electron microscopy). These measurements show that there is a strong relationship between precursor structure and heterojunction nanomorphology. A combination of TAS (transient absorption spectroscopy) and photovoltaic device performance measurements is used to show the intricate balance required between charge photogeneration and percolated domains in order to effectively extract charges to maximize device power conversion efficiencies. This study presents a strong case for xanthate complexes as a useful route to designing optimal heterojunction morphologies for use in the emerging field of hybrid organic/inorganic solar cells, due to the fact that the nanomorphology can be tuned via careful design of these precursor materials.
              Article 0 comments Cited 121 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                Leandro José dos Santos: Role: ND
                Guilherme Pereira Rocha: Role: ND
                Rosemeire Brondi Alves: Role: ND
                Rossimiriam Pereira de Freitas: Role: ND
                Journal
                Journal ID (publisher): qn
                Title: Química Nova
                Abbreviated Title: Quím. Nova
                Publisher: Sociedade Brasileira de Química (São Paulo )
                ISSN: 1678-7064
                Publication date (Print): 2010
                Volume: 33
                Issue: 3
                Pages: 680-693
                Affiliations
                [1 ] Universidade Federal de Minas Gerais Brazil
                Article
                Publisher ID: S0100-40422010000300036
                DOI: 10.1590/S0100-40422010000300036
                SO-VID: 7073b5ea-f767-4db3-9c54-9c8e8fe7e10e
                License:

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0100-4042&lng=en
                Categories
                Subject: CHEMISTRY, MULTIDISCIPLINARY

                ScienceOpen disciplines: General chemistry
                Keywords: fullerene C60,nanomaterials,carbon allotropes
                Data availability:
                ScienceOpen disciplines: General chemistry
                Keywords: fullerene C60, nanomaterials, carbon allotropes

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