Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance work on Wednesday 21st October 2020 from 07:00 AM to 07:00 PM (BST).

During this time our website performance may be temporarily affected. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 32, 2012
Previous Article Next Article

One- and two-photon induced emission in heterobimetallic ZnII–SmIII and ZnII–TbIII complexes with a side-off compartmental ligand

Author affiliations

Abstract

Heterobimetallic [ZnIILnIII] complexes have been obtained using a compartmental Schiff-base ligand, H2valdmpn, resulting from the 2 : 1 condensation between o-vanillin and 2,2-dimethyl-propilenediamine: [Zn(H2O)(valdmpn)Sm(O2NO)3] 1, [Zn(H2O)(valdmpn)Tb(O2NO)3] 2a, [Zn(H2O)(valdmpn)Tb(O2NO)3]·H2O 2b, and [Zn(H2O)(valdmpn)Gd(O2NO)3]·H2O 3. The crystal structures of 1, 2b, and 3 have been solved. Compounds 1 and 2a crystallize in a non-centrosymmetric space group (P212121), being isomorphous. Crystals 2b and 3 are also isomorphous (space group P[1 with combining macron]). The complex entities in the four crystals are similar and their structures consist of binuclear species with the pentacoordinated zinc(II) ion hosted into the N2O2 compartment and the lanthanide(III) ion in the large, open compartment, with a coordination number of 10. The photophysical properties of the four compounds have been investigated. Strong visible excited (excitation tails extend up to 420–430 nm) one photon antenna sensitization was obtained with the samarium(III) and terbium(III) derivatives. Following femtosecond Ti:Sapphire laser at λex = 775 nm, both second-harmonic generation at λem = 775/2 nm and two-photon induced emission in the VIS range were obtained, extending thus the excitation range of these complexes from the VIS to the NIR spectral range. The two-photon induced emission and second harmonic generation effect for a samarium(III) complex are reported for the first time.

Graphical abstract: One- and two-photon induced emission in heterobimetallic ZnII–SmIII and ZnII–TbIII complexes with a side-off compartmental ligand

Back to tab navigation

Supplementary files

Article information


Submitted
30 Mar 2012
Accepted
12 Jun 2012
First published
13 Jun 2012

Phys. Chem. Chem. Phys., 2012,14, 11448-11456
Article type
Paper

One- and two-photon induced emission in heterobimetallic ZnII–SmIII and ZnII–TbIII complexes with a side-off compartmental ligand

T. D. Pasatoiu, A. M. Madalan, M. Zamfirescu, C. Tiseanu and M. Andruh, Phys. Chem. Chem. Phys., 2012, 14, 11448
DOI: 10.1039/C2CP41026E

Social activity

Search articles by author

Spotlight

Advertisements