First tellurium-containing phthalocyanine analogues: strong effect of tellurium on spectral, redox and conductivity properties of porphyrazines with annulated chalcogenodiazole ring(s)This article is part of the ChemComm 'Porphyrins and phthalocyanines' web themed issue.Electronic supplementary information (ESI) available: Synthetic procedure used for the preparation of dinitrile precursor 1, details of electrochemical and conductivity studies of 3 and its S- and Se-analogues and spectral data f

• Main Authors: Stuzhin, Pavel A, Mikhailov, Maksim S, Yurina, Elena S, Bazanov, Mikhail I, Koifman, Oskar I, Pakhomov, Georgy L, Travkin, Vlad V, Sinelshchikova, Anna A
• Format: Article
• Language: English
• ISSN: 1359-7345; 1364-548X
• DOI: 10.1039/c2cc35580a

The first tellurium-containing phthalocyanine analogues have been prepared and spectroscopically characterised: the Mg II complex of tetra(1,2,5-telluradiazolo)porphyrazine and a low-symmetry tert -butyl substituted Mg II tribenzoporphyrazine with one fused 1,2,5-telluradiazole ring. It was observed that the introduction of Te atom(s) reduces the energy of the Q-transition, facilitates the reduction of the macrocycle and strongly increases the conductivity of thin films. The introduction of tellurium in 1,2,5-chalcogenodiazoloporphyrazines stabilises the LUMO, facilitates the reduction of the macrocycle and strongly increases the conductivity of fabricated thin films.