International Conference on Nanoscience & Nanotechnology (ICONN) is a joint venture of the Department of Chemistry & Chemical Engineering, SBA School of Science & Engineering (SBASSE), Lahore University of Management Sciences (LUMS), Lahore, and the School of Chemical and Materials Engineering (SCME), National University of Science & Technology (NUST), Islamabad. The first conference (ICONN-2018) of this series was successfully held at NUST on Nov. 1-2, 2018, and the second conference (ICONN-2019) of this series will be held at LUMS on Nov. 1-2, 2019. This year, the joint venture to organise ICONN-2019 is further extended to the Preston Institute of NanoScience & Technology (PINSAT), Preston University, Islamabad.