ABSTRACT
The consequent physicochemical dynamics from light absorption on the ultraviolet and visible regions (UV/Vis) by molecular systems are the object of study to many scientific fields. The development of such systems has countless applications including the design of optoelectronic devices (Guo et al., 2013; Reiss, 2011) such as organic light-emitting diodes (OLEDs) (Orgiu and Samori, 2014; Reineke et al., 2013; Uoyama et al., 2012), solar cells (Kang et al., 2016; Mazzio and Luscombe, 2015; Facchetti, 2011), sensors (Sonawane and Asha, 2016; Singh et al., 2016; Baeg et al., 2013; Chen et al., 2011) and imaging (Lerch et al., 2016; Reineke et al., 2013; Zheng et al., 2013; Ito et al., 2010). In this sense, the purpose of this chapter is to present an overview of basic concepts related to the photophysics of organic aromatic molecules. These ideas will be built starting from small molecules until macromolecules, specifically semiconducting polymers (SemPolys), focusing on their applications.
