Journal
INORGANIC CHEMISTRY
Volume 55, Issue 13, Pages 6496-6503Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.6b00571
Keywords
-
Categories
Funding
- NSF of China [21571136]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials
Ask authors/readers for more resources
A systematic study on ligand-to-ligand charge-transfer (LLCT) properties of three closely related metal organic frameworks (MOFs) is presented. These compounds are formulated as [MnL(4,4'-bpy)(H2O)](n)center dot nCH(3)CN (1), [MnL(bpe)(0.5)(DMF)](n)center dot 2nH(2)O (2), and [MnL(bpa)(H2O)](n)center dot 2nH(2)O (3) (L = dimethylthio-tetrathiafulvalene-bicarboxylate, 4,4'-bpy = 4,4'-bipyridine, bpe = 1,2-bis(4-pyridyl)ethene, bpa = 1,2-bis(4-pyridyl)ethane). The X-ray single-crystal diffractions show that complexes 1-3 are all two-dimensional (2-D) coordination polymers with different frameworks in crystal lattices. Charge-transfer (CT) interactions within these MOFs are visually apparent in colors and vary according to the conjugated states of the bipyridine ligands (4,4'-bpy, bpe, and bpa). Theoretical calculations show that the charge transfer occurs from ligand L to bipyridine. The intensity of the LLCT is in the order of 2 > 1 > 3 investigated by theoretical calculations and ESR, which indicates that the intensity of CT is related to the bipyridyl conjugated state. Photocurrent responses of these compounds are consequently studied,and the results are in agreement with the intensity of charge transfer and linearly related to the LLCT energy.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available