Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/80585
Título: | High Piezoelectric Output Voltage from Blue Fluorescent N,N-Dimethyl-4-nitroaniline Nano Crystals in Poly-L-Lactic Acid Electrospun Fibers |
Autor(es): | Baptista, Rosa Maria Ferreira Silva, Bruna Oliveira, João Bayzi Isfahani, Vahideh Almeida, Bernardo Pereira, Mário R. Cerca, Nuno Castro, Cidália Rodrigues, Pedro Machado, A. V. Belsley, M. de Matos Gomes, Etelvina |
Palavras-chave: | electrospinning microfibers piezoelectric crystals nitroanilines fluorescence functional organic materials |
Data: | 10-Nov-2022 |
Editora: | MDPI |
Revista: | Materials |
Citação: | Baptista, R.M.F.; Silva, B.; Oliveira, J.; Isfahani, V.B.; Almeida, B.; Pereira, M.R.; Cerca, N.; Castro, C.; Rodrigues, P.V.; Machado, A.; Belsley, M.; Gomes, E.d.M. High Piezoelectric Output Voltage from Blue Fluorescent N,N-Dimethyl-4-nitroaniline Nano Crystals in Poly-L-Lactic Acid Electrospun Fibers. Materials 2022, 15, 7958. https://doi.org/10.3390/ma15227958 |
Resumo(s): | N,N-dimethyl-4-nitroaniline is a piezoelectric organic superplastic and superelastic charge transfer molecular crystal that crystallizes in an acentric structure. Organic mechanical flexible crystals are of great importance as they stand between soft matter and inorganic crystals. Highly aligned poly-l-lactic acid polymer microfibers with embedded N,N-dimethyl-4-nitroaniline nanocrystals are fabricated using the electrospinning technique, and their piezoelectric and optical properties are explored as hybrid systems. The composite fibers display an extraordinarily high piezoelectric output response, where for a small stress of 5.0 × 103 Nm−2, an effective piezoelectric voltage coefficient of geff = 4.1 VmN−1 is obtained, which is one of the highest among piezoelectric polymers and organic lead perovskites. Mechanically, they exhibit an average increase of 67% in the Young modulus compared to polymer microfibers alone, reaching 55 MPa, while the tensile strength reaches 2.8 MPa. Furthermore, the fibers show solid-state blue fluorescence, important for emission applications, with a long lifetime decay (147 ns) lifetime decay. The present results show that nanocrystals from small organic molecules with luminescent, elastic and piezoelectric properties form a mechanically strong hybrid functional 2-dimensional array, promising for applications in energy harvesting through the piezoelectric effect and as solid-state blue emitters. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/80585 |
DOI: | 10.3390/ma15227958 |
e-ISSN: | 1996-1944 |
Versão da editora: | https://www.mdpi.com/1996-1944/15/22/7958 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series PHYSICS OF QUANTUM MATERIALS AND BIONANOSTRUCTURES (2018 - ...) IPC - Artigos em revistas científicas internacionais com arbitragem |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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materials-15-07958.pdf | 1,8 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons