Browse Prior Art Database

Method for Producing Oriented Layers of Polyimide with Preferred Orientation

IP.com Disclosure Number: IPCOM000114241D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2005-Mar-28
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Dimitrakopoulos, C: AUTHOR [+3]

Abstract

Disclosed is a method for producing oriented layers of thin polyimide films with prefered orientation with respect to the substrate. This method involves using self assembled monolayers (1) to provide the template for the polyimide layers. The polyimide layers are grown by molecular beam deposition (2).

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Method for Producing Oriented Layers of Polyimide with Preferred
Orientation

      Disclosed is a method for producing oriented layers of thin
polyimide films with prefered orientation with respect to the
substrate.  This method involves using self assembled monolayers (1)
to provide the template for the polyimide layers.  The polyimide
layers are grown by molecular beam deposition (2).

      The first step of this method is the production of the template
layer on the desired substrate.  The template layer is produced by
using self assembled monolayer techniques (1).  The self assembled
monolayer technique uses a molecule such as a long chain alkane thiol
which produces an ordered monolayer.  The long chain thiol molecule
has a terminal end group.  For the case of producing oriented
polyimide layers, aniline or carboxylic acid groups are examples of
approriate end groups.  The orientation is determined by the
orientation of these end groups.  Thus with an aniline end group, the
NH&sub2.  could be in the para or meta position.  Once the template
layer is in place, the polyimide is grown on top of the template
using molecular beam deposition technique.  For example polyimide can
be grown from pyromelitic dianhydride and oxydianiline.  In the case
of a aniline terminated template layer, the pyromelltic dianhydride
will react with the terminal NH&sub2.  group of the self assembled
monolayer which determines it orientation and the continuous growth
of the p...