Blue- And white-light-emitting 2D-coordination polymers and their solid-state photodimerization reaction

Abdul Malik P. Peedikakkal*, Almaz S. Jalilov, Abdul Rajjak Shaikh, Abdul Nasar Kalanthoden, Abdulaziz A. Al-Saadi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

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 languageEnglish
Pages (from-to)7663-7670
Number of pages8
JournalCrystEngComm
Volume23
Issue number43
DOIs
StatePublished - 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

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