[1] Univ Strathclyde, Dept Pure & Appl Chem, West CHEM, Glasgow G1 1XL, Lanark, Scotland
[2] Beatson Inst Canc Res, Glasgow G61 1BD, Lanark, Scotland
[3] Univ Manchester, Sch Mat, Manchester M1 7HS, Lancs, England
[4] CUNY, ASRC, New York, NY 10031 USA
[5] CUNY, Hunter Coll, Dept Chem & Biochem, New York, NY 10065 USA