Details
Name
Rui Costa MartinsCluster
Networked Intelligent SystemsRole
Senior ResearcherSince
15th November 2016
Nationality
PortugalCentre
Applied PhotonicsContacts
+351220402301
rui.c.martins@inesctec.pt
2021
Authors
Aguiar, AS; Magalhaes, SA; dos Santos, FN; Castro, L; Pinho, T; Valente, J; Martins, R; Boaventura Cunha, J;
Publication
Agronomy
Abstract
2021
Authors
Monteiro Silva, F; Queiros, C; Leite, A; Rodriguez, MT; Rojo, MJ; Torroba, T; Martins, RC; Silva, AMG; Rangel, M;
Publication
MOLECULES
Abstract
Functional organic dyes play a key role in many fields, namely in biotechnology and medical diagnosis. Herein, we report two novel 2,3- and 3,4-dihydroxyphenyl substituted rosamines (3 and 4, respectively) that were successfully synthesized through a microwave-assisted protocol. The best reaction yields were obtained for rosamine 4, which also showed the most interesting photophysical properties, specially toward biogenic amines (BAs). Several amines including n- and t-butylamine, cadaverine, and putrescine cause spectral changes of 4, in UV-Vis and fluorescence spectra, which are indicative of their potential application as an effective tool to detect amines in acetonitrile solutions. In the gas phase, the probe response is more expressive for spermine and putrescine. Additionally, we found that methanolic solutions of rosamine 4 and n-butylamine undergo a pink to yellow color change over time, which has been attributed to the formation of a new compound. The latter was isolated and identified as 5 (9-aminopyronin), whose solutions exhibit a remarkable increase in fluorescence intensity together with a shift toward more energetic wavelengths. Other 9-aminopyronins 6a, 6b, 7a, and 7b were obtained from methanolic solutions of 4 with putrescine and cadaverine, demonstrating the potential of this new xanthene entity to react with primary amines.
2021
Authors
Ribeiro, R; Capela, D; Ferreira, M; Martins, R; Jorge, P; Guimaraes, D; Lima, A;
Publication
Minerals
Abstract
2019
Authors
Magalhães, SA; dos Santos, FN; Martins, RC; Rocha, LF; Brito, J;
Publication
Progress in Artificial Intelligence - Lecture Notes in Computer Science
Abstract
2019
Authors
Monteiro Silva, F; Jorge, PAS; Martins, RC;
Publication
Chemosensors
Abstract
Supervised Thesis
2021
Author
Miguel Fernandes Soares Ferreira
Institution
UP-FCUP
2020
Author
Ana Patrícia Ferreira Vicente da Silva
Institution
UP-FCUP
2020
Author
Miguel Fernandes Soares Ferreira
Institution
UP-FCUP
2019
Author
Miguel Fernandes Soares Ferreira
Institution
UP-FCUP
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