5 documents found, page 1 of 1
Synthesis, photophysical and electrochemical properties of π-conjugated pyrene ...
Barros, Helio; Esteves, M. Alexandra; Brites, Maria JoãoABSTRACT: Pyrene molecule, with excellent photophysical properties (strong absorption cross section, excellent emission properties and a long-excited state lifetime), excellent thermal and photochemical stability, has been widely used as a building block for the synthesis of pyrene-based fluorophores for optoelectronic applications. In this work, we report the synthesis of two series of pyrene-pi-A compounds, s...
Synthesis and photophysical properties of tetraphenylethylene derivatives as lu...
Barros, Helio; Esteves, M. Alexandra; Brites, Maria JoãoABSTRACT: Luminescent Down-Shifting (LDS) is an optical approach applied in several photovoltaic (PV) technologies in which high energy solar radiation is converted to a wavelength region where the response of the photovoltaic devices is better. The use of LDS layers on organic photovoltaics (OPV) could serve two purposes: to prevent cell degradation by filtering the incident ultraviolet (UV) radiation and to i...
Synthesis and photophysical behavior of fluorescent benzazole dyes and fluoresc...
Barros, Helio; Stefani, ValterABSTRACT: Novel benzazole derivatives were synthesized and their photophysical properties were determined experimentally in different types of solvents also by theoretical calculations using Density Functional Theory (DFT). The results of the theoretical computational studies were well consistent with those observed experimentally, evidencing the type of electronic transitions that occurs between the frontiers ...
Synthesis and photophysical properties of tetraphenylethylene derivatives as lu...
Barros, Helio; Esteves, M. Alexandra; Brites, Maria JoãoABSTRACT: Luminescent Down-Shifting (LDS) is an optical approach applied in several photovoltaic (PV) technologies in which high energy solar radiation is converted to a wavelength region where the response of the photovoltaic devices is better. The use of LDS layers on organic photovoltaics (OPV) could serve two purposes: to prevent cell degradation by filtering the incident ultraviolet (UV) radiation and to i...
Novo modelo de integração de sistemas avançados de energia renovável nos edifícios
Aelenei, Laura Elena; Brites, Maria João; Joyce, A; Esteves, M. Alexandra; Rodrigues, Carlos; Barros, Helio; Valente, D.RESUMO: O projeto IDEAS “Novel building Integration Designs for increased Efficiencies in Advanced climatically tunable renewable energy Systems” é um projeto financiado pelo Programa HORIZON2020, multidisciplinar que reúne várias temáticas científicas e competências para o desenvolvimento e demonstração de um novo conceito de design para integração de edifícios. O modelo combina várias tecnologias de energia r...