Novel metal-organic frameworks with naphthalene-diimide based linkers

Mahmud, Musa Muhammad (2025). Novel metal-organic frameworks with naphthalene-diimide based linkers. University of Birmingham. M.D.

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Abstract

A naphthalene diimide-based ligand (DNNDI) was used to create novel lanthanide metal-organic frameworks (MOFs). The lanthanide metals used were Yb(III), Y(III), Lu(III), Er(III), and Sm(III). A simple solvothermal technique was used to create each MOF, and FTIR, SCXRD, PXRD, TGA, SEM, and UV-Vis spectroscopy were used to characterize them. All the frameworks crystalised in a similar tetragonal crystal system I41/a space group or monoclinic space group and are isostructural being built from similar rod SBUs linked by the naphthalene-diimide-based ligand. The secondary building units (SBUs) consist of M-O-C rods and MO8 polyhedra. The pyridyl nitrogen of the nicotinic acid moiety was found to be uncoordinated, providing opportunities for post-synthetic alteration of the MOFs. Host-guest studies encapsulating molecules of phenothiazine and ferrocene were synthesized, characterized and reported. Additionally, a mixed metal MOF with DNNDI linkers and the first, medium and last member of the lanthanide series (La(III), Gd(III) and Lu(III)) were synthesized and characterized by the same techniques as with the single metal lanthanide MOFs reported.

Type of Work:

Thesis (Doctorates > M.D.)

Award Type:

Doctorates > M.D.

Supervisor(s):