resumo
The use of the post-synthetic modification of metal-organic frameworks is a recent strategy for engineering the coordination sphere of lanthanide cations and optimizing the light-emission properties of organic-inorganic hybrid materials. Here, IRMOF-3 was modified with 2-chloroacetic acid, glyoxylic acid, diethyl (ethoxymethylene) malonate and methyl vinyl ketone (vapour) and characterized by elemental analysis, solution and solid-state NMR, Fourier transform infrared spectroscopy, powder X-ray diffraction and scanning electron microscopy. The yields of the amino group's conversion were, respectively, 100% (IRMOF-3-CA), 75% (IRMOF-3-Gl), 80% (IRMOF-3-EM), and 76% (IRMOF-3-MVK). The reductive amination of IRMOF-3-Gl was carried out using sodium triacetoxyborohydride. The modified IRMOF-3 pendant groups were used to coordinate Eu3+ and Nd3+ and generate infrared (and visible) light emission.
palavras-chave
METAL-ORGANIC FRAMEWORKS; NEAR-INFRARED LUMINESCENT; CARBON-DIOXIDE CAPTURE; GAS-SOLID REACTION; COORDINATION POLYMERS; HYDROGEN STORAGE; DRUG-DELIVERY; STATE; COMPLEXES; SENSORS
categoria
Chemistry
autores
Abdelhameed, RM; Carlos, LD; Silva, AMS; Rocha, J
nossos autores
João Rocha
Prof. Catedrático
Luís Carlos
Professor Catedrático
Reda Mohamed Abdelhameed Ahmed
Bolseiro de pós-Doutoramentoagradecimentos
This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013) and Organic Chemistry Research Unit (QOPNA) (project PEst-C/QUI/UI0062/2013), financed by national funds through the FCT/MEC and when applicable co-financed by FEDER under the PT2020 Partnership Agreement. We also thank the Portuguese National NMR Network (RNRMN). Rute A. S. Ferreira is gratefully acknowledged for her help with the photoluminescence measurements. R. M. A. thanks also FCT for the PhD research grant (SFRH/BD/51269/2010). We further acknowledge COST Action MP1202.