1. Department
of Chemistry, University of Massachusetts, Amherst, Massachusetts
01003, United States
2. Instituto
de Física, Universidade de São Paulo, C.P. 66318−05314-970
São Paulo, SP, Brazil
3. Department of Chemistry, Tulane University, New Orleans, Louisiana 70118, United
States
4. Department of Applied
Chemistry, Keio University, Yokohama 223-8522,
Japan