Synthesis, structure, and photoluminescence properties of lanthanide based metal organic frameworks and a cadmium coordination polymer derived from 2,2′-diamino-trans 4,4′-stilbenedicarboxylate

Golafale, ST, Ingram, CW, Bacsa, J, Steiner, A ORCID: 0000-0002-4315-6123 and Solntsev, KM (2018) Synthesis, structure, and photoluminescence properties of lanthanide based metal organic frameworks and a cadmium coordination polymer derived from 2,2′-diamino-trans 4,4′-stilbenedicarboxylate Inorganica Chimica Acta, 478. pp. 243-249. ISSN 0020-1693, 1873-3255

Text 1-s2.0-S0020169317315013-main.pdf - Author Accepted Manuscript Download (1MB)

Abstract

Two isostructural lanthanide-based metal - organic frameworks, {[Ln(C<inf>16</inf>H<inf>12</inf>N<inf>2</inf>O<inf>4</inf>)(CHO<inf>2</inf>)(OH<inf>2</inf>)·2(C<inf>5</inf>H<inf>11</inf>NO)]}<inf>n</inf>, Ln = Yb (1) and Tm (2), and a cadmium(II) coordination polymer,{[Cd<inf>2</inf>(C<inf>16</inf>H<inf>12</inf>N<inf>2</inf>O<inf>4</inf>)(NO<inf>3</inf>)·4(C<inf>3</inf>H<inf>7</inf>NO)]}<inf>n,</inf> were synthesized by the combination of the respective metal nitrate and 2,2′-diamino-trans 4,4′-stilbenedicarboxylate (C<inf>16</inf>H<inf>12</inf>N<inf>2</inf>O<inf>4</inf>) under solvothermal conditions [C<inf>5</inf>H<inf>11</inf>NO = diethylformamide and C<inf>3</inf>H<inf>7</inf>NO = dimethylformamide]. Their structures were determined by X-ray single crystal analysis, X-ray powder diffraction, Fourier transformed infrared spectroscopy, elemental analysis, thermogravimetric analysis and solid state photoluminescence spectroscopy. Both lanthanide structures are infinite three-dimensional non-penetrating networks with extremely large diamond shape accessible channels of cross-sectional dimensions [30 Å x 12 Å] and with the amino-functional groups projecting into the channels. The cadmium-based structure is a one-dimensional coordination polymer with both the carboxylate and the amino groups coordinating the cadmium atoms, which resulted in a large increase in the rigidity of the ligand. Ligand-based fluorescence was exhibited by all three networks, with the cadmium based structure showing the highest intensity and longest fluorescence radiative lifetime.

Item Type:	Article
Uncontrolled Keywords:	3402 Inorganic Chemistry, 3403 Macromolecular and Materials Chemistry, 34 Chemical Sciences
Depositing User:	Symplectic Admin
Date Deposited:	11 Apr 2018 08:38
Last Modified:	01 Mar 2026 08:51
DOI:	10.1016/j.ica.2018.04.005
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3020034
Disclaimer:	The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate.