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Layer of metallomacrocyclic polymer on substrate
| Details |
Inventors: Wegner, Gerhard; Orthmann, Ernst;
Assignee: BASF Aktiengesellschaft (Ludwigshafen, DE)
Primary Examiner: Ives; P. C.
Assistant Examiner:
Attorney, Agent or Firm: Keil & Weinkauf
A layer element comprises a base having a hydrophobic surface and, applied on this, one or more solid, thin, ordered layers of defined uniform and regular structure, in particular monolayers or multilayers, having a uniform orientation of the layer-forming molecules in one direction. The said layers are formed from a metallomacrocyclic polymer which is fusible and/or soluble in an organic, water-immiscible solvent and is of the general formula [M(Pcyc)O].sub.n, where M is Si, Ge or Sn, (Pcyc) is a complex-forming centrosymmetric polycyclic ring system, in particular a phthalocyanine ring system having hydrophobic substituents, and n is the mean degree of polymerization and is equal to or greater than 3. The novel layer elements can advantageously be produced by the Langmuir-Blodgett technique, in which a solid-like monolayer produced on a water surface from the metallomacrocyclic polymers is transferred to a substrate having a hydrophobic surface by immersion and withdrawal of the said substrate. The layer elements according to the invention can be used, for example, as optical filters, e.g. grey filters, interference filters or polarization filters, in electrochemistry and the electrical industry, for example as electrodes, sensors, catalysts etc., as photosensitive elements for electrophotography, and for many other applications. |
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DETAILED DESCRIPTION We claim: 1.
A layer element which comprises a base having a hydrophobic surface and, applied on the said base, one or more solid, thin, ordered layers having a defined uniform and regular structure with uniform orientation of the molecules in one direction and formed of a metallomacrocyclic polymer which is fusible and/or soluble in an organic water-immiscible solvent and is of the formula [M(Pcyc)0].
sub.
n, where M is Si, Ge or Sn, Pcyc is a complexforming centrosymmetric polycyclic ring system and n is the mean degree of polymerization and is equal to or greater than 3.
2.
A layer element as defined in claim 1, wherein the solid, thin, ordered layer or layers contains or contain a mixture of the metallomacrocyclic polymers and monomeric metallomacrocyclic compounds of the formula [M(Pcyc)X.
sub.
2 ], where M is Si, Ge or Sn, Pcyc is a complex-forming centrosymmetric polycyclic ring system and X is a terminal group bonded to M.
3.
A layer element as defined in claim 1, wherein the metallomacrocyclic polymer is a phthalocyaninatopolymetalloxane of the formula [M(Pc)0].
sub.
n, where M is Si, Ge or Sn, Pc is a phthalocyanine ring system having a hydrophobic substituent and n is the mean degree of polymerization and is equal to or greater than 3.
4.
A layer element as defined in claim 3, wherein the solid, thin, ordered layer of the phthalocyaninatopolymetalloxanes also contains, mixed with these compounds, monomeric silicon, germanium or tin phthalocyaninatometalloxanes possessing hydrophobic substituents.
5.
A layer element as defined in claim 1, wherein the solid, thin, ordered layers of the metallomacrocyclic polymers have a monolayer or multilayer structure.
6.
A layer element as defined in claim 1, wherein the molecules of the metallomacrocyclic polymers in the solid, thin, ordered layers are oriented so that the polymer chains are parallel to one another and are in the plane of the layer.
7.
A layer element as defined in claim 1, wherein the solid, thin, ordered layers of the metallomacrocyclic polymers have been heated at from 50
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