Conducting polyaniline filaments in a mesoporous channel host

Journal Article · Fri Jun 17 04:00:00 EDT 1994 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.264.5166.1757· OSTI ID:6860536

Wu, Chun-Guey; Bein, T ^[1]

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1. Purdue Univ., West Lafayette, IN (United States)

Conducting filaments of polyaniline have been prepared in the 3-nanometer-wide hexagonal channel system of the aluminosilicate MCM-41. Adsorption of aniline vapor into the dehydrated host, followed by reaction with peroxydisulfate, leads to encapsulated polyaniline filaments. Spectroscopic data show that the filaments are in the protonated emeraldine salt form, and chromatography indicates chain lengths of several hundred aniline rings. The filaments have significant conductivity while encapsulated in the channels, as measured by microwave absorption at 2.6 gigahertz. This demonstration of conjugated polymers with mobile charge carriers in nanometer channels represents a step toward the design of nanometer electronic devices.

• OSTI ID: 6860536
• Journal Information: Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 264:5166; ISSN SCIEAS; ISSN 0036-8075
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601 -- Other Materials-- Preparation & Manufacture
360606* -- Other Materials-- Physical Properties-- (1992-)
ADSORBENTS
AMINES
ANILINE
AROMATICS
CHEMICAL REACTIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MOLECULAR SIEVES
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
POLYMERIZATION