Towards nanometre-scale gratings: synthesis and characterization of dodecyloxy-substituted platinum phthalocyanines
- 1 January 1992
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 2 (10) , 1065-1068
- https://doi.org/10.1039/jm9920201065
Abstract
Octakis(dodecyloxy)platinum(II) phthalocyanine, (C12H25O)8PcPt, has been synthesized and its mesomorphic properties have been studied. It exhibits a liquid-crystalline phase from 77 °C to its decomposition temperature ( > 350 °C). X-Ray diffraction at small angles indicates a hexagonal columnar structure (intercolumnar distance 34.3 Å). A fairly narrow ring at 3.29 Å can be associated with the intracolumnar Pt–Pt spacing, indicating an important overlap of the dz 2 platinum orbitals. (C12H25O)8PcPt forms aggregates when dissolved in organic solvents. Dimerization constants have been estimated to be in the range 105–108 dm3 mol–1.Keywords
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