I am greatly pleased to write this letter in support of Dr. X’s fellowship application. When Dr. X started working under my supervision in September 2015, he had little to no experience in the photophysical characterization of organic semiconductor films. However, his professionalism, outstanding intellect, and scientific vocation allowed him to rapidly become an important and valuable member of our research group. Since he is a fast learner and a motivated scientist, I have no doubt that he would be an asset for any research group working in the fields of biophysics or physical chemistry. When conducting experiments, Dr. X is thorough and meticulous. When analysing data, he is creative and exhaustive. He can work independently with minimal supervision. Additionally, he has a knack for establishing productive and amicable relationships with his colleagues and collaborators. He is always humble and willing to listen to his colleagues’ ideas. It is worth noting that Dr. X has acquired considerable international experience. He received his PhD in Chemical Sciences from the University of X and then went on to occupy academic positions in Spain, Ireland, and Italy. This has helped him to attain a high level of maturity as a scientist. It has also helped him to hone his English language skills, which are excellent. He can communicate his ideas in a concise and fluid English. He is also able to discuss scientific concepts in Italian, despite the fact that he has lived in Italy for a relatively short period of time. To summarize, I am certain that Dr. X will be able to successfully carry out the research activities outlined in his research plan. I therefore highly recommend him to you, without reservation. If you need further information about Dr. X, please feel free to contact me. Regarding the expected benefits for Dr. X's career, I believe that this fellowship will provide him with valuable skills that will significantly contribute to the realization of his goals. In particular, this fellowship will allow him to increase his knowledge of fluorescence microscopy, which is one of the central aspirations of his career. Concerning the research plan, to the best of my knowledge it is an excellent research plan that could result in important advancements in the understanding of the mechanisms of DNA-repair. Furthermore, it seems that the results derived from the implementation of this research plan could have a direct impact on the prognosis and quality of life of cancer patients, which would be, of course, a very desirable outcome.