1. Departamento de Química, Cerro de la Venada s/n. Pueblito de Rocha. C.P. 36040, Universidad de Guanajuato, Guanajuato, Mexico
2. División de Ciencias e Ingenierías, Universidad de Guanajuato, Loma del Bosque 103, colonia Lomas del Campestre, CP 37150, León, Guanajuato, Mexico
3. Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, Texas 78249, USA
4. Department of Physics and Astronomy, The University of Texas at San Antonio, San Antonio, Texas 78249, USA