Department of Chemistry and Center for Advanced Engineering Fibers and Films, Howard L. Hunter Chemistry Laboratory, Clemson University, Clemson, South Carolina 29634-0973, Department of Chemistry, Furman University, Greenville, South Carolina 29613-0420, and Department of Physics and Astronomy, Kinard Laboratory, Clemson University, Clemson, South Carolina 29634-0978 (At 2002-03-16)
