Abstract
Two Pb(ii) coordination polymers (CPs), namely [Pb(μ-bpe)(μ-O2CCH3)2]n(1) and [Pb(μ-bpe)(μ-O2CH)2]n(2), have been isolated from the reaction of Pb(OAc)2·3H2O with 1,2-bis(4-pyridyl)ethene (bpe) in the presence of acetate and formate anionic ligands, respectively. Compounds1and2formed 2D sheet-like structures, constructed by bridging acetate and formate carboxylate ligands. The bpe ligand containing the olefinic C-C bonds was perfectly brought to the proximity of Schmidt topolochemical criteria for2. The 2D sheet in2underwent 67% of the photodimerization reaction in the solid state, while the 2D sheet in1was photochemically stable. Therefore, the photochemical reactivity of1and2was rationalized based on the orientation of the olefinic C-C bonds, which was brought close to each other due to the distinct bridging of the carboxylates and the Pb(ii) metal ions. The room temperature solid-state photoluminescence (PL) revealed that compound1exhibited a near white-light emission and the blue-light emission for2upon excitation at 365 nm. The differences in the emission of the two 2D-sheets were correlated with the bridging carboxylate ligands.
Original language | English |
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Pages (from-to) | 7663-7670 |
Number of pages | 8 |
Journal | CrystEngComm |
Volume | 23 |
Issue number | 43 |
DOIs | |
State | Published - 21 Nov 2021 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2021.
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics