Germanium phthalocyanine films

Details Germanium phthalocyanine films Germanium phthalocyanine films

1994-01-19

1995-08-01

Thibodeau, Paul J.

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4274301, 4274343, 4274195, 540122, 540128, 540139, B32B 3300

Patent

active

054379296

ABSTRACT:
A process for preparing film structures comprising phthalocyanine oligomers having metal coordinating atoms in adjacent rings connected along a central axis through oxygen atoms. The ligands on the outermost rings of the structures are hydrophilic. The preferred coordinating atom is germanium and the structures may be prepared on a Langmuir-Blodgett balance using phthalocyanine oligomers in which one of the outermost rings is connected to a hydrophobic ligand while the other outermost ring is connected to a hydrophilic ligand. The pH of the subphase in the trough of the balance is maintained at a pH of from about 2 to 6, and the hydrophobic ligand is converted to a hydrophilic ligand during the process of coating a substrate by passing it upward through the film on the subphase.

REFERENCES:
patent: 4900817 (1990-02-01), Batzel et al.
patent: 5280183 (1994-01-01), Batzel et al.
"Phthalocyanine Langmiur--Blodgett Film Microsensors for Halogen Gases", H. Y. Wang, Wen H. Ko, D. A. Batzel, M. E. Kenney, and J. B. Lando, Sensors and Actuators, B1 (1990), pp. 138-141, Elsevier Sequoia: The Netherlands.

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