Área de Química Orgánica
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Easy and Versatile Synthesis of Bulk Quantities of Highly Enriched 13C-Graphene Materials for Biological and Safety Applications
(American Chemical Society, 2022-12)The preparation of bulk quantities of 13C-labeled graphene materials is relevant for basic investigations and for practical applications. In addition, 13C-labeled graphene materials can be very useful in biological and ... -
Embedding and Positioning of Two FeII4L4 Cages in Supramolecular Tripeptide Gels for Selective Chemical Segregation
(Wiley, 2019-03)An unreported d,l-tripeptide self-assembled into gels that embedded FeII4L4 metal–organic cages to form materials that were characterized by TEM, EDX, Raman spectroscopy, rheometry, UV/Vis and NMR spectroscopy, and circular ... -
SERS-Based Methodology for the Quantification of Ultratrace Graphene Oxide in Water Samples
(ACS, 2022-06)The extensive use of graphene materials in real-world applications has increased their potential release into the environment. To evaluate their possible health and ecological risks, there is a need for analytical methods ... -
Triplet photosensitizer-nanotube conjugates: synthesis, characterization and photochemistry of charge stabilizing, palladium porphyrin/carbon nanotube conjugates
(Royal Society of Chemistry, 2020-04-22)The ability of a triplet photosensitizer to generate long-lived charge separated states, in contrast to traditionally used singlet photosensitizers, in covalently functionalized single-walled carbon nanotube hybrids has ... -
N-Doped graphene/C60 covalent hybrid as a new material for energy harvesting applications
(Royal Society of Chemistry, 2018-08-27)N-Doped graphene (N-G)was chemically functionalized byN-alkylationwith the well-known electron acceptor C60. The degree of functionalization and the key structural features of the N-G/C60 hybrid were systematically investigated ... -
Formation and Photoinduced Electron Transfer in Porphyrin- and Phthalocyanine-Bearing N-Doped Graphene Hybrids Synthesized by Click Chemistry
(Wiley-VCH, 2022-03-07)Graphene doped with heteroatoms such as nitrogen, boron, and phosphorous by replacing some of the skeletal carbon atoms is emerging as an important class of two-dimensional materials as it offers the much-needed bandgap ... -
Thiophene-Based Covalent Organic Frameworks: Synthesis, Photophysics and Light-Driven Applications
(MDPI, 2021-12-17)Porous crystalline materials, such as covalent organic frameworks (COFs), have emerged as some of the most important materials over the last two decades due to their excellent physicochemical properties such as their large ... -
Self-Assembly-Directed Organization of a Fullerene–Bisporphyrin into Supramolecular Giant Donut Structures for Excited-State Charge Stabilization
(ACS, 2021-07-14)Functional materials composed of spontaneously self-assembled electron donor and acceptor entities capable of generating long-lived charge-separated states upon photoillumination are in great demand as they are key in ... -
Formation of quaternary carbons through cobalt-catalyzed C(sp3)–C(sp3) Negishi cross-coupling
(Royal Society of Chemistry, 2020-06-12)Formation of all-carbon-substituted quaternary carbons is a key challenge in organic and medicinal chemistry. We report a cobalt-catalyzed C(sp3)–C(sp3) cross-coupling that allows for the introduction of benzyl, ... -
Eco-friendly mechanochemical synthesis of titania-graphene nanocomposites for pesticide photodegradation
(Elsevier, 2022-02)Titania graphene hybrid nanocomposites (TiO2-FLG) synthesized from graphite and TiO2 precursors, in a simple and sustainable approach via a three-step method, including the mechanochemical treatment of pre-synthesized FLG ... -
Use of Thienylenevinylene and Ethynyl Molecular Bridges in Organic Dyes for Dye-Sensitized Solar Cells: Implizations for Device Performance
(Wiley, 2014-07-15)The synthesis, full characterization, and use of a series of organic dyes with thienylenevinylene and ethynyl bridges as light-harvesting chromophores in TiO2-based photoelectrochemical dye-sensitized solar cells are ... -
Understanding the Driving Mechanisms of Enhanced Luminescence Emission of Oligo(styryl)benzenes and Tri(styryl)-s-triazine
(Wiley, 2020-03-12)This work is focused on unraveling the mechanisms responsible for the aggregation-induced enhanced emission and solid-state luminescence enhancement effects observed in star-shaped molecules based on 1,3,5-tris(styryl)- benzene ... -
Operative Mechanism of Hole-Assisted Negative Charge Motion in Ground States of Radical-Anion Molecular Wires
(American Chemical Society, 2017-01-18)Charge transfer/transport in molecular wires over varying distances is a subject of great interest. The feasible transport mechanisms have been generally accounted for on the basis of tunneling or superexchange charge ... -
Oligothienylenevinylene Polarons and Bipolarons Confined between Electron-Accepting Perchlorotriphenylmethyl Radicals
(ChemPubSoc Europe, 2018-03-12)A detailed analysis is undertaken of positively charged species generated on a series of thienylenevinylene (nTV) wires terminally substituted with two perchlorotriphenylmethyl (.PTM) radical acceptor groups, .PTM-nTV-PTM. ... -
[All]-S,S-dioxide Oligo-Thienylenevinylenes: Synthesis and Structural/Electronic Shapes from Their Molecular Force Fields
(ChemPubSoc Europe, 2019-01-07)Oligo-S,S-dioxothienylenevinylenes have been prepared by transferring oxygen atoms to the sulfur atoms using the HOF·CH3CN complex. Their photophysical properties are presented in comparison with their thio phenevinylene ... -
Flexible, multifunctional nanoribbon arrays of palladium nanoparticles for transparent conduction and hydrogen detection
(Elsevier, 2019-03-15)A novel combination of nanostructuring techniques is undertaken to obtain a multifunctional material system consisting of planar arrays of nanoribbons of Pd nanoparticles (NPs) on polyethylene terephthalate (PET) sub ... -
The influence of the terminal acceptor and oligomer length on the photovoltaic properties of A–D–A small molecule donors
(The Royal Society of Chemistry, 2020-02-25)Four new A–D–A small molecules (denoted as FG1–4) have been designed and synthesized. The compounds have cyclopentadithiophene-vinylene (CPDTV) oligomers of different lengths as the central donor core linked with different ... -
Synthesis and electronic properties of pyridine end capped cyclopentadithiophene-vinylene oligomers
(The Royal Society of Chemistry, 2020-11-11)A series of four oligomers of cyclopentadithiophene-vinylenes end capped with pyridine groups was prepared and their optical and electronic properties studied. Treatment with trifluoroacetic acid (TFA) leads to the ... -
Sc3N@Ih-C80 based donor–acceptor conjugate: role of thiophene spacer in promoting ultrafast excited state charge separation
(The Royal Society of Chemistry, 2020-04-27)Light induced charge separation in a newly synthesized triphenylamine–thiophene-Sc3N@Ih-C80 donor–acceptor conjugate and its C60 analog, triphenylamine–thiophene-C60 conjugate is reported, and the significance of the ... -
Oligomers of cyclopentadithiophene-vinylene in aromatic and quinoidal versions and redox species with intermediate forms
(Royal Society of Chemistry, 2017-09-27)A new series of p-conjugated oligomers based on the 4,4 dihexyl-4H-cyclopenta[2,1-b:3,4-b0 ]dithiophene vinylene repeating unit has been prepared and characterized by X-ray, electrochemical, spectroscopic (UVVis absorption, ...
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