Naphthalene-1,8-dicarboxylate based zinc coordination polymers: a photophysical study
Herein, we report the synthesis and photoluminescence properties of a new 1,3-dioxo-2-(1H-tetrazol-5-yl)-2,3-dihydro-1H-benzo[de]isoquinoline-6,7-dicarboxylic (HL) ligand and three coordination polymers (CPs). Compound [Zn(ntca)DMF]·DMF (1) (ntca = 1,4,5,8-naphthalenetetracarboxylate 1,8-monoanhydri...
| Autores: | , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/355117 |
| Acceso en línea: | http://hdl.handle.net/10261/355117 |
| Access Level: | acceso abierto |
| Palabra clave: | Chelation Density functional theory Dimethylformamide Hydrogen bonds Naphthalene Organic solvents Photoluminescence Zinc |
| Sumario: | Herein, we report the synthesis and photoluminescence properties of a new 1,3-dioxo-2-(1H-tetrazol-5-yl)-2,3-dihydro-1H-benzo[de]isoquinoline-6,7-dicarboxylic (HL) ligand and three coordination polymers (CPs). Compound [Zn(ntca)DMF]·DMF (1) (ntca = 1,4,5,8-naphthalenetetracarboxylate 1,8-monoanhydride, DMF = N,N-dimethylformamide) formed 1D coordination polymer chains packed by hydrogen bonding interactions. On its part, compounds namely [(CH)NH](Zn(μ-OH)(L)(5-NH-tetrazolate)·2HO (2) and [(CH)NH](ZnL) (3) (where HL stands for 1,3-dioxo-2-(1H-tetrazol-5-yl)-2,3-dihydro-1H-benzo[de]isoquinoline-6,7-dicarboxylic acid) crystallize as 2D-layered and 3D anionic frameworks containing dimethylammonium cations occupying the voids. Photoluminescence (PL) measurements have been performed in the solid state on all CPs and ligands to characterize their emission properties, including variable-temperature spectra, lifetime and efficiency. Moreover, the photophysical properties have been studied from the theoretical viewpoint by means of time dependent density functional theory (TD-DFT) in order to elucidate the mechanisms and electronic transitions governing the process. Compounds 1 and 3 present an intense blue luminescence which was originated in the electronic transitions of the ntca and the L ligands. Compound 2 displays a lower quantum yield which could be tentatively attributed to the weak π-π interactions of the aromatic clouds of L or the molecular vibrations and/or possible rotational motions of the 5-amino-tetrazolate co-ligand. |
|---|