**Author details**

António Pereira1,2\*, Sérgio Martins1 and Ana Teresa Caldeira1,2

1 HERCULES Laboratory, Évora University, Évora, Portugal

2 Chemistry Department, School of Sciences and Technology, Évora University, Évora, Portugal

\*Address all correspondence to: amlp@uevora.pt

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
