Advances in inherently conducting polymers Page: 3 of 21
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ADVANCES IN INNZR3NTLY CONDUCTING POLYNME
Los Almos National Laboratory
Los Alamos, MM 67545
I NTRODUCT ION
since their discovery, conducting polymers have generated an
excitement about the possibility of combining some electronic and
optical properties of semiconductors and metals with the
attractive mechanical properties and processing possibilities of
polymers. Polymers as plastic materials have numerous
technological applications because of their low cost, lightness,
The main characteristic of a potentially conducting polymer
:s a conjugated backbone that can be subjected to
oz'dation/reduction by electron acceptors/donors resulting in a
polycation/polyanion or what are frequently termed p-type/n-type
doped materials. The conjugation of a polymer's backbone is
necessary for conduction. This conjugation is also responsible
for Ue environmental stability of most of these materials due to
the high reactivity of the double bonds (or of the charge
transfer complex obtained by doping) with oxygen, moisture, and
light. Therein lies some of the research challenge.
The initial polymer system were intractable and therefore,
tbir characterization and a full understanding of their
properties were difficult to obtain. It took a few years for
progres to be wade in that direction, resulting in the syxtbesis
of a few solution-processable polymers. Most of the potentially
conducting polymers possess an amorphous character with
icrostructur.s of various sines and shapes and of a certain
porosity that depends upon the aature of the polymer and its
synthesis technique. The modification of the morphology of some
of these materials toward a more ordered structure has been
investigated, and earlier work showed that alignment of the
polymer chains and th'ir aggregates enhances the optical and
electrical parties of the materials.
environmental Stability and ahair. and/or
_i n pp are the key elements in this discussion and
w ll be explained based on recant and earlier work.
I. MATER5AJ SURYY
The ia'ia! polymer system consisted of materials obtained
by conventional techniques that had been known for a long time. A
brief description of these earlier polymers and of the more
recent ones is given in this section. Note that the material
discussed here will be limited to organic polymers.
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Aldissi, M. Advances in inherently conducting polymers, article, September 1, 1987; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1108118/m1/3/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.