4 papers
Vibrations Drive Ultrafast Intersystem Crossing of a Photoexcited Cr(III) Complex
Ying You, James K. McCusker, Arshad Mehmood +1
The Cr(III) coordination complex serves as an archetypical 3d transition metal system for probing ultrafast excited-state dynamics with spin conversion due to its intrinsic intersy…
Chemical and Conformational Control of the Spectroscopic Properties of Multi-Layer and Multi-Defect Carbon Dots
Arshad Mehmood, Caitlin V. Hetherington, Zain Zaidi +1
Carbon dots (CDs) are renowned for their bright and tunable photoluminescence (PL), stability, and biocompatibility, yet it remains challenging to link their heterogeneous structur…
Simulating Ultrafast Transient Absorption Spectra from First Principles using a Time-Dependent Configuration Interaction Probe
Arshad Mehmood, Myles C. Silfies, Andrew S. Durden +2
Transient absorption spectroscopy (TAS) is among the most common ultrafast photochemical experiments, but its interpretation remains challenging. In this work, we present an effici…
IR Spectroscopy of Carboxylate-Passivated Semiconducting Nanocrystals: Simulation and Experiment
Jakub K. Sowa, Danielle M. Cadena, Arshad Mehmood +3
Surfaces of colloidal nanocrystals are frequently passivated with carboxylate ligands which exert significant effects on their optoelectronic properties and chemical stability. Exp…