Synthesis of a highly emissive carboxylated pyrrolidine-fused chlorin for optical sensing of TATP vapours

• Tipo: Artigo em Revista Científica Internacional
• Data: 2021

Autores

Vargas, AP (Autor) Outra; Almeida, J (Autor) Outra; Gamez, F (Autor) Outra; Roales, J (Autor) Outra; Queiros, C (Autor) Outra; Maria Rangel (Autor) ICBAS; Lopes Costa, T (Autor) Outra; Silva, AMG (Autor) Outra; Pedrosa, JM (Autor) Outra

Revista

Título: Dyes and Pigments

Vol. 195

ISSN: 0143-7208

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 5 Citações

Outras Informações

ID Authenticus: P-00V-CT3

DOI: 10.1016/j.dyepig.2021.109721

Abstract (EN): We describe the synthesis and characterization of a new N-methylpyrrolidine-fused meso-tetracarboxyphenyl-chlorin with highly emissive features. The synthetic approach to obtain the fluorescent chlorin involves the microwave-assisted synthesis of meso-tetrakis (4-methoxycarbonylphenyl)porphyrin, followed by a 1,3-dipolar cycloaddition reaction of this porphyrin with azomethine ylide and, finally, ester hydrolysis under basic conditions. The incorporation and anchoring of the chlorin to a nanostructured porous TiO2 matrix is achieved and optimized for its use as a fluorescent sensor. In particular, we found an efficient detection of the explosive triacetone triperoxide (TATP) in the gas phase. The optical response after analyte exposure is selective and fast, with response time t(50) values of less than 10 min under exposure to TATP saturated vapours.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8