Patent · US Expired

Layer element having a plurality of monomolecular layers

US5402262A · kind A · utility

1Cited by

3References

10Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Uwe Falk · Könnern, DE
Werner Hickel · Ludwigshafen, DE
Donald Lupo · Frankfurt am Main, DE
Ude Scheunemann · Bad Soden am Taunus, DE

Key dates

Filing date	Aug 17, 1993
Grant date	Mar 28, 1995
Priority date	—
Expiry date	Aug 17, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/3188
WIPO fieldMicro-structural and nano-technology
WIPO sectorChemistry

Abstract

A layer element comprises a plurality of monomolecular layers in a regular and alternating arrangement ABABAB . . . on a substrate, wherein A is a layer of a dye whose chromophore has a donor-acceptor structure and B is a layer of cellulose whose hydroxyl groups are at least partly substituted by the radical ##STR1## where R.sup.1 and R.sup.2 are each independently of the other an alkyl radical of from 1 to 4 carbon atoms and R.sup.3 is an alkyl radical of from 1 to 18 carbon atoms or phenyl, tolyl or benzyl. It is useful for nonlinear optics.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.