Widely tunable band filling in a molecular metal. Chemical and physical consequences of electrochemically doping a cofacially joined metallomacrocyclic assembly

John G. Gaudiello, Manuel Almeida, Tobin J Marks, William J. McCarthy, John C. Butler, Carl R. Kannewurf

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Abstract

The cofacially joined metallomacrocyclic polymer [Si(Pc)O]n (Pc = phthalocyaninato) can be reversibly oxidized electrochemically as a slurry to yield a "molecular metal". As monitored by controlled potential coulometry, X-ray powder diffraction, infrared spectroscopy, specular reflectance spectroscopy, and thermoelectric power, the stoichiometry of the resulting {[Si(Pc)O](BF4)y}n polymers can be continuously varied from y = 0.00 to 0.50. This broad, incremental tuning of the band filling (the first time for a molecular metal) is accompanied by a continuous evolution of the optical and charge transport properties from those of a semiconductor to those of a low-dimensional metal-like material.

Original languageEnglish
Pages (from-to)4917-4920
Number of pages4
JournalJournal of Physical Chemistry
Volume90
Issue number21
Publication statusPublished - 1986

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ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

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