Dr. Dragoș - Lucian Isac, carry out an internship in the field of computational chemistry. In this internship he improved his knowledge on the calculation of excited states of organic compounds by applying adiabatic and non-adiabatic methods. Also, during the internship he employed different programs to calculate the excited states, such as NEWTON X, MOPAC-PISA. Within the Prof Mario Barbatti group, he participated in seminars on the application of the "machine learning" algorithm for the calculation and interpretation of data following electronic excitation processes. The stage allowed for networking activities development and collaborations with Prof. Mario Barbarbatti from "Institute de Chimie Radicalaire Aix-Marseille University".