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Structural characterisation of a series of acetylide-functionalised oligopyridines and the synthesis, characterisation and optical spectroscopy of platinum di-ynes and poly-ynes containing oligopyridyl linker groups in the backbone

Title data

Khan, Muhammad S. ; Al-Mandhary, Muna R. A. ; Al-Suti, Mohammed K. ; Hisahm, Abdul Khader ; Raithby, Paul R. ; Ahrens, Birte ; Mahon, Mary F. ; Male, Louise ; Marseglia, Elizabeth A. ; Tedesco, Emilio ; Friend, Richard H. ; Köhler, Anna ; Feeder, Neil ; Teat, Simon J.:
Structural characterisation of a series of acetylide-functionalised oligopyridines and the synthesis, characterisation and optical spectroscopy of platinum di-ynes and poly-ynes containing oligopyridyl linker groups in the backbone.
In: Dalton Transactions. (2002) Issue 7 . - pp. 1358-1368.
ISSN 1477-9234
DOI: https://doi.org/10.1039/B110658A

Abstract in another language

A series of trimethylsilyl-protected bis(ethynyl)oligopyridine derivatives Me3SiC[triple bond, length as m-dash]C–R–C[triple bond, length as m-dash]C–SiMe3 (R = 2,2′-bipyridine-5,5′-diyl (1a), 2,2′-bipyridine-6,6′-diyl (2a), 2,2′:6′,2″-terpyridine-6,6″-diyl (3a), 4′-phenyl-2,2′:6′,2″-terpyridine-6,6″-diyl (4a)) has been synthesised and 2a–4a have been characterised by single crystal X-ray crystallography. The corresponding terminal di-ynes H–C[triple bond, length as m-dash]C–R–C[triple bond, length as m-dash]CH (1b–4b) and their dinuclear platinum(II) complexes trans-[(Et3P)2(Ph)Pt–C[triple bond, length as m-dash]C–R–C[triple bond, length as m-dash]C–Pt(Ph)(Et3P)2] (1M–4M) have been characterised spectroscopically and by single-crystal X-ray crystallography for 2M. Novel platinum(II) poly-yne polymers trans-[Pt(PBun3)2–C[triple bond, length as m-dash]C–R–C[triple bond, length as m-dash]C–]n (1P–4P) containing the oligopyridyl linker groups in the backbone have been synthesised by the CuI-catalysed dehydrohalogenation polycondensation reaction of 1b–4b and trans-[(Bu3P)2PtCl2] in Pri2NH–CH2Cl2. The polymeric materials exhibit decreasing thermal stability with increasing number of pyridine units in the linker group. In the absorption and phosphorescence spectra, the platinum(II) poly-yne and di-yne complexes 1P, 1M show red shifts whereas the complexes 2P–3P, 2M–3M show blue shifts of the S1 and T1 states. At room temperature, the phosphoresence spectra indicate some excimer formation whereas at 10 K, only intra-chain emission occurs. The results of the photophysical studies are compared with those obtained for other platinum(II)-containing poly-ynes and related organometallic polymers.

Further data

Item Type: Article in a journal
Refereed: No
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Mar 2015 09:53
Last Modified: 18 Mar 2015 09:53
URI: https://eref.uni-bayreuth.de/id/eprint/8476