Metal-organic frameworks a partir de aminoácidos y adeninaquiralidad e hidrocromismo

Resumo

The present Thesis addresses the synthesis of bio-related metal-organic frameworks (MOFs) and coordination polymers (CPs) as novel functional materials. Whit this aim, two main studies have been developed: i) study the influence of the enantiomeric ratio of two chiral ligands over the structure and chirality in MOFs; and ii) the design and synthesis of novel hydrochromic CPs based in nucleobase-adenine, aromatic tetracarboxylate ligands and transition metals. In Chapter 1, we show a brief review about CPs/MOFs, their chemistry, synthetic methods and their current applications including gas adsorption and catalysis. In particular, we have highlighted those CPs/MOFs made of biomolecules as organic linkers. Then, general objectives of this Thesis are described in Chapter 2. Chapter 3 describes the importance of the chirality as an important property in CPs/MOFs, summarizing the results reported in the article “The influence of the enantiomeric ratio of an organic ligand on the structure and chirality of metal–organic frameworks”, Chemical Communications, 2014, 50, 13829-13832. In this work, we showed that the enantiomeric ratio is a relevant variable in the synthesis of porous MOFs, making possible to access to different MOF structures just by changing this variable. In Chapter 4, we show the development of a new hydrochromic adenine-based CP using an aromatic tetracarboxylic acid, as an auxiliary linker and Co(II). This study has been reported in the article titled “Two New Adenine-based Co(II) Coordination Polymers: Synthesis, Crystal Structure, Coordination Modes and Reversible Hydrochromic Behavior”, Crystal Growth and Design, 2015, 15, 3182–3189.