Wydział Chemii

Marcin Stępień

Bertrand Donnio

Jonathan L. Sessler

2007

Chemistry-A European Journal

13

6853-6863

10.1002/chem.200700125

Naukowa

Angielski

Artykuł

A number of substituted zinc(II) porphycenes and porphyrins have been synthesized as potentially mesogenic materials. One of the resulting porphycenes, bearing eight decyloxy chains, exhibits two mesophases, a transient lamellar phase (Lam) and a highly ordered lamello‐columnar phase (L_Col), with remarkably different structural characteristics. The same zinc(II) porphycene also forms an electron donor–acceptor (EDA) complex with tetracyanoquinodimethane (TCNQ), generating a hexagonal columnar mesophase (Col_h) that is thermally stable up to ca. 200 °C. The EDA interaction between porphycene and TCNQ has been probed using electronic and vibrational spectroscopy. A mixture of zinc(II) porphyrins, isomeric with the above porphycene complex, forms a rectangular columnar mesophase (Col_r).

https://doi.org/10.1002/chem.200700125

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