resumo
The in situ preparation and the full spectroscopic characterization of corrole - gold nanoparticles (AuTPFCS) are reported. The synthetic approach to these nanoconjugates involved the reaction of a mercaptocorrole (TPFCSH) with chloroauric acid under reductive conditions. Fluorescence quantum yields and time resolved lifetimes showed a significant quenching of the mercaptocorrole after its covalent coupling to the gold nanoparticles in acetonitrile and in toluene. Irradiated samples of AuTPFCS with a Nd:YAG laser in toluene solution revealed the distribution of larger nanoparticles from 3.1 to 11 nm viewed by TEM images.
palavras-chave
SINGLET OXYGEN; PHOTOPHYSICAL PROPERTIES; FLUORESCENCE
categoria
Chemistry; Engineering; Materials Science
autores
Barata, JFB; Serra, VV; Daniel-da-Silva, AL; Neves, MGPMS; Costa, SMB; Cavaleiro, JAS; Trindade, T
nossos autores
Ana Luísa Daniel da Silva
Investigador Principal
Joana Filipa Brites Barata
Bolseiro de pós-Doutoramento
Tito Trindade
Professor CatedráticoProjectos
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Corrole based systems for luminescent thermometry at nanoscale (CORLUTNA)
agradecimentos
Thanks are due to University of Aveiro and FCT/MCTES for the financial support to CESAM (UIDP/50017/2020 + UIDB/50017/2020 + LA/P/0094/2020) , CICECO-Aveiro Institute of Materials (UIDB/50011/2020 & UIDP/50011/2020) and LAQV-REQUIMTE (UIDB/50006/2020) through national funds and, where applicable, co-financed by the FEDER, within the PT2020 Partnership Agreement, and to the Portuguese NMR Network, which partially support the NMR spectrometers by Infrastructure Project N? 022161 (co-financed by FEDER through COMPETE 2020, POCI and PORL and FCT through PIDDAC) . Centro de Quimica Estrutural acknowledges the financial support of Fundacao para a Ciencia e Tecnologia (UIDB/00100/2020) and to the project PTDC/QUI-COL/29379/2017. This work was also financially supported by the project Corlutna (POCI-01-0145-FEDER-031523; PTDC/QUI-QOR/31523/2017) funded by FEDER, through COMPETE2020-Programa Operacional Competitividade e Internacionalizacao (POCI) , and by national funds (OE) , through FCT/MCTES.