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

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.


Issue 8, 2013
Previous Article Next Article

Synthesis and photoluminescence properties of rhenium(I) complexes based on 2,2′:6′,2′′-terpyridine derivatives with hole-transporting units

Author affiliations

Abstract

Based on 2,2′:6′,2′′-terpyridine ligands (L1), five terpyridine derivatives, namely 4′-carbazol-9-yl-2,2′:6′,2′′-terpyridine (L2), 4′-diphenylamino-2,2′:6′,2′′-terpyridine (L3), 4′-bis(4-tert-butylphenyl)amino-2,2′:6′,2′′-terpyridine (L4), 4′-[naphthalen-1-yl-(phenyl)amino]-2,2′:6′,2′′-terpyridine (L5), 4′-[naphthalen-2-yl(phenyl)amino]-2,2′:6′,2′′-terpyridine (L6) and their corresponding Re(I) complexes ReLnnn(CO)33Cl (n = 1–6) have been synthesized and characterized by elemental analysis and 1H NMR spectroscopy. The X-ray crystal structure of ReL3(CO)33Cl has also been obtained. The luminescence spectra of ReL2(CO)33Cl–ReL5(CO)33Cl, obtained in CH2Cl2 solution at room temperature, show strong dπ (Re) → π* (diimine) MLCT character (λmax ∼ 600 nm) and a small red shift relative to ReL1(CO)33Cl. This, confirmed by the study of the triplet energy levels of the L1–L6 ligands at low temperature (77 K rigid matrix), indicates that the introduction of electron-donating moieties on the terpyridine unit decreases the triplet levels of the ligands, leading to a reduction of the energy gap between d and π* orbitals. In the solid state, upon MLCT excitation, all the complexes show an even stronger emission and a blue spectral shift (λmax ∼ 550 nm) compared to those obtained in solution.

Graphical abstract: Synthesis and photoluminescence properties of rhenium(i) complexes based on 2,2′:6′,2′′-terpyridine derivatives with hole-transporting units

Back to tab navigation
Please wait while Download options loads

Supplementary files

Publication details

The article was received on 24 Apr 2012, accepted on 15 Nov 2012 and first published on 15 Nov 2012


Article type: Paper
DOI: 10.1039/C2DT32154H
Citation: Dalton Trans., 2013,42, 2716-2723
  •   Request permissions

    Synthesis and photoluminescence properties of rhenium(I) complexes based on 2,2′:6′,2′′-terpyridine derivatives with hole-transporting units

    D. Wang, Q. Xu, S. Zhang, H. Li, C. Wang, T. Li, Y. Jing, W. Huang, Y. Zheng and G. Accorsi, Dalton Trans., 2013, 42, 2716
    DOI: 10.1039/C2DT32154H

Search articles by author