1. Department of Chemistry and Biochemistry, Utah State University, Logan, UT 84322 USA
2. Departamento de Fisica, Universidade Estadual de Maringa, Maringá, PR 87020-900, Brazil
3. CAPES Foundation, Ministry of Education of Brazil, Brasilia, DF 70040-020, Brazil
4. Universidade Tecnologica Federal do Parana, Toledo, PR 85902-490, Brazil
5. Universidade Tecnologica Federal do Parana, Santa Helena, PR 85892-000, Brazil