Synthesis and luminescent properties of new naphthoquinoline lactone derivatives

Santos, Fernanda Amorim [UNESP]; Tondato, Wellington Negri [UNESP]; Tame Parreira, Renato Luis; Orenha, Renato Pereira; Leite Lourenço, Luiz Carlos; da Silva de Laurentiz, Rosangela [UNESP]

Synthesis and luminescent properties of new naphthoquinoline lactone derivatives

Data

2020-11-01

Autores

Santos, Fernanda Amorim

Tondato, Wellington Negri

Tame Parreira, Renato Luis

Orenha, Renato Pereira

Leite Lourenço, Luiz Carlos

da Silva de Laurentiz, Rosangela

Tipo

Artigo

Resumo

The multicomponent reaction between tetronic acid (1), 2-aminoanthracene (2) and aromatic aldehydes (3) and the subsequent addition of DDQ produced a series of naphtho [2,3-f]quinoline lactone derivatives (5) in good yield. UV–Vis and fluorescence spectra of these derivatives are described. The optical absorption and emission properties of the compounds were studied in different solvents and pH. The results show that the naphthoquinoline derivatives have emission bands of 453–517 nm and one of them, compound 5d, had an unexpected bathochromic shift (597 nm) caused by an excited-state intramolecular proton transfer (ESIPT). The luminescent properties of 5d in different solvents and pH, although preliminary, indicate the potential use of this compound as a chemical sensor.