7 documents found, page 1 of 1
Metal-Organic Frameworks as Sensors for Human Amyloid Diseases
Leite, José P.; Figueira, Flávio; Mendes, Ricardo F.; Almeida Paz, Filipe A.; Gales, LuísMetal-organic frameworks (MOFs) are versatile compounds with emergent applications in the fabrication of biosensors for amyloid diseases. They hold great potential in biospecimen protection and unprecedented probing capabilities for optical and redox receptors. In this Review, we summarize the main methodologies employed in the fabrication of MOF-based sensors for amyloid diseases and collect all available data...
Porphyrin-silica gel hybrids as effective and selective copper(II) adsorbents f...
El Abiad, Chahrazad; Radi, Smaail; El Massaoudi, Mohamed; Lamsayah, Morad; Figueira, Flávio; Faustino, M. Amparo F.; Neves, M. Graça P.M.S.Porphyrins are an important class of ligands with a tremendous ability to capture metal ions closely related to the rich coordination chemistry of porphyrins. Herein we use this characteristic to develop silica gel grafted derivatives for water remediation applications. Therefore, two porphyrin derivatives, one with three and the other with four mercaptopyridyl units were grafted on silica gel functionalized wi...
Easy Handling and Cost-Efficient Processing of a Tb3+-MOF: The Emissive Capacit...
Echenique-Errandonea, Estitxu; Mendes, Ricardo Faria; Figueira, Flávio; Barbosa, Paula; Rojas, Sara; Choquesillo-Lazarte, Duane; Cepeda, JavierThe development of convenient, non-complicated, and cost-efficient processing techniques for packing low-density MOF powders for industry implementation is essential nowadays. To increase MOFs' availability in industrial settings, we propose the synthesis of a novel 3D Tb-MOF (1) and a simple and non-expensive method for its immobilization in the form of pellets and membranes in polymethacrylate (PMMA) and poly...
Thiophene- and carbazole-substituted N-Methyl-Fulleropyrrolidine acceptors in P...
Gaspar, Hugo; Figueira, Flávio; Strutyński, Karol; Melle-Franco, Manuel; Ivanou, Dzmitry; Tomé, João P. C.; Pereira, Carlos M.; Pereira, LuizThe impact of fullerene side chain functionalization with thiophene and carbazole groups on the device properties of bulk-heterojunction polymer:fullerene solar cells is discussed through a systematic investigation of material blends consisting of the conjugated polymer poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)-2,2′;5′,2″;5″,2‴-quaterthiophen-5,5‴-diyl)] (PffBT4T-2OD) as do...
PffBT4T-2OD based solar cells with Aryl-Substituted N-Methyl-Fulleropyrrolidine...
Gaspar, Hugo; Figueira, Flávio; Strutyński, Karol; Melle-Franco, Manuel; Ivanou, Dzmitry; Tomé, João P. C.; Pereira, Carlos M.; Pereira, LuizNovel C<sub>60</sub> and C<sub>70</sub> <i>N</i>-methyl-fulleropyrrolidine derivatives, containing both electron withdrawing and electron donating substituent groups, were synthesized by the well-known Prato reaction. The corresponding highest occupied molecular orbital (HOMO)/lowest unoccupied molecular orbital (LUMO) energy levels were determined by cyclic voltammetry, from the onset oxidation and reduction p...
Recent developments in the optimization of the bulk heterojunction morphology o...
Gaspar, Hugo; Figueira, Flávio; Pereira, Luiz; Mendes, Adélio; Viana, J. C.; Bernardo, GabrielOrganic photovoltaic (OPV) devices, made with semiconducting polymers, have recently attained a power conversion efficiency (PCE) over 14% in single junction cells and over 17% in tandem cells. These high performances, together with the suitability of the technology to inexpensive large-scale manufacture, over lightweight and flexible plastic substrates using roll-to-roll (R2R) processing, place the technology ...
Synthesis and anion binding properties of porphyrins and related compounds
Figueira, Flávio; Rodrigues, João M. M.; Farinha, Andreia A. S.; Cavaleiro, José A. S.; Tomé, João P. C.Over the last two decades the preparation of pyrrole-based receptors for anion recognition has attracted considerable attention. In this regard porphyrins, phthalocyanines and expanded porphyrins have been used as strong and selective receptors while the combination of those with different techniques and materials can boost their applicability in different applications as chemosensors and extracting systems. Im...