Accession Number : ADA264751


Title :   Optically Switchable Conductive Polymers


Descriptive Note : Final rept. 15 Jun-14 Dec 1992


Corporate Author : EIC LABS INC NORWOOD MA


Personal Author(s) : Rose, Timothy L ; Kon, Allan B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264751.pdf


Report Date : Feb 1993


Pagination or Media Count : 15


Abstract : The objectives of the project were to synthesize and characterize a polymer which could be switched to its conductive state by intramolecular electron transfer initiated by absorption of light. By covalently bonding the electron donating moiety to the polymer, the rate of switching should be fast and uniform giving it potential applications in optical processing devices. The initial polymer system selected was a polythiophene substituted at the 3 position with a diphenyliodonium salt. Photodissociation of diphenyliodonium chloride in physical contact with the polymer formed the highly oxidizing phenyliodonium radical cation which in turn oxidized the polythiophene backbone. Several approaches tried to synthesize the covalently bound substituted polythiophene were unsuccessful. Polymerization of 3-ferrocenylpyrrole, which also has potential photodoping properties, was also unsuccessful.


Descriptors :   *CONDUCTIVITY , *POLYMERS , *OPTICAL SWITCHING , CATIONS , PROCESSING , COVALENT BONDS , FILMS , IRON , CHLORIDES , BONDING , IODINE COMPOUNDS , THIOPHENES , PHENYL RADICALS , OPTICAL PROCESSING , ELECTRON TRANSFER , SALTS , ABSORPTION , ELECTRON DONORS , PYRROLES , ELECTRONS , RATES , LIGHT , POLYMERIZATION , PHOTODISSOCIATION , MOLECULAR STATES


Subject Categories : Polymer Chemistry
      Electrooptical and Optoelectronic Devices
      Electricity and Magnetism
      Optics


Distribution Statement : APPROVED FOR PUBLIC RELEASE