In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2021, No. 36 ( 2021-09-24), p. 3691-3698
Abstract:
The macrocyclic calix[4]arene ligand H 2 L comprises two non‐fluorescent 2,6‐bis‐(iminomethyl)phenolate chromophores, which show a chelation‐enhanced fluorescence enhancement upon Zn 2+ ion complexation. Macrocyclic [ZnL] complexes aggregate in the absence of external coligands via intermolecular Zn−N bonds to give dimeric [ZnL] 2 structures comprising two five‐coordinated Zn 2+ ions. The absorption and emission wavelengths are bathochromically shifted upon going from the liquid (λ max,abs (CH 2 Cl 2 )=404 nm, λ max,em (CH 2 Cl 2 )=484 nm) to the solid state (λ max,abs =424 nm (4 wt%, BaSO 4 pellet), λ max,em =524 nm (neat solid)). Insights into the electronic nature of the UV‐vis transitions were obtained with time‐dependent density functional theory (TD‐DFT) calculations for a truncated model complex.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2021.36
DOI:
10.1002/ejic.202100442
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
1475009-0
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