Polypyrrole for use in information storage

Electrically conducting polymers: a review of the electropolymerization reaction, of the effects of chemical structure on polymer film properties, and of applications towards technology

“…As shown in the scheme below, adapted from Meyer et al (73), polypyrrole is electrochemically grown onto an anode with a surface relief pattern. Polypyrrole is then peeled off and made to adhere to a solid substrate, leaving exposed the inverse surface relief pattern of the anode.…”

“…The high electrical conductivity of polypyrrole may then be utilized for information storage as long as the information is stored as a relief pattern on the polymer film surface. The information is accessed by reading it capacitively with an electrode (73). Subsequent testing of this material in a video disk machine, as a disk of 210-rnm diameter and supported by a substrate, revealed a virtually defect-free material of constant signal-to-noise ratio over the entire information containing disk; i.e., a high degree of surface relief replication with no distortion of information was achieved.…”

“…In a novel application exploiting the high electrical conductivity of polypyrrole, Meyer et al (73) have explored the possibility of its use for high-density information storage (74). As shown in the scheme below, adapted from Meyer et al (73), polypyrrole is electrochemically grown onto an anode with a surface relief pattern.…”

Solid Phase and Combinatorial Chemistry in the Heterocyclic Field

“…A further element of diversity can be introduced into the pyrrolidine ring during the cleavage step (multidirectional electrophilic cleavage) with different electrophiles (HCl, acid chlorides, allyl iodide, and so on) to furnish collections of pyrrolidines of type 124 in good yields (Scheme 28.38) [159]. Substituted pyrroles are commonly found in natural products [160,161], drugs [162,163], conducting materials [164,165] and insecticides [166]. The pyrrole ring system has been synthesized on solid-supports by few methods.…”

Comformational Analysis and Electronic Properties of Fluoromethylfuran Oligomers: Semiempirical and DFT Study

“…In addition to their orientations, size of the electric dipole moment vector of the monomers and their interactions with the solvent and support electrolyte are the key factors in their selection for electro-polymerization. Furthermore, the structure of the electrical double layer at the surface of electrodes which determines the kinetics of the diffusion-controlled electrode reactions depends on the dipole moment of the solute molecules [20,23]. Thus, the calculated values of the electric dipole moment vectors for FMF monomers and their corresponding oligomers have been listed in Table 3.…”