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Bridged macrocyclic transition metal complexes, a new type of semiconducting materials

Published online by Cambridge University Press:  31 January 2011

Michael Hanack ,
A. Hirsch ,
A. Lange ,
M. Rein ,
G. Renz  and
P. Vermehren
Michael Hanack
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
A. Hirsch
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
A. Lange
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
M. Rein
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
G. Renz
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
P. Vermehren
Affiliation:
Institut für Organische Chemie, Lehrstuhl für Organische Chemie II der Universität Tübingen, Auf der Morgenstelle 18, D-7400 Tübingen, Germany
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Abstract

Bridged quasi–one-dimensional macrocyclic transition metal complexes [MacM(L)]n using phthalocyanine (Pc), tetrabenzoporphyrine (TBP), 1,2- and 2,3-naphthalocyanines (1,2-Nc; 2,3-Nc) as macrocycles (Mac) with M = e.g., Fe, Ru, Co and L = e.g., pyrazine (pyz), 1,4-diisocyanobenzene (dib), tetrazine (tz) exhibit interesting electrical properties. Regardless of the size of the bridging ligand after either chemical or electrochemical doping stable semiconducting compounds [MacM(L)Xy]n (X = e.g., I2 BF4−, ClO4−…) are formed. For the first time the complete characterization of soluble oligomers [MacM(L)]n (Mac = t-Bu4Pc, M = Ru, L = dib, me4dib) by 1H-NMR spectroscopy is reported. Some of these shish kebab complexes, e.g., [PcM(tz)]n, (M = Fe, Ru) or [MacMCN]n; (Mac = Pc, TBP; M = Co, Fe) exhibit good semiconducting properties without additional external doping. Whether or not these compounds are intrinsic semiconductors will be discussed. The synthesis of oligomeric bridged mixed valence compounds [PcM(III)LPcM(II)L]n, (M = e.g., Fe) is another target of our work. We report here on first results of these oligomers.

Type
Articles
Information
Journal of Materials Research , Volume 6 , Issue 2 , February 1991 , pp. 385 - 392
Copyright
Copyright © Materials Research Society 1991

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