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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 49: Poster Session II
CPP 49.26: Poster
Dienstag, 17. März 2020, 14:00–16:00, P1A
Energy transfer mechanism in fluorescent carbon nanoparticle/dye composite — •Sumesh Sofin R. G1, Abey Issac1, Malik R. S. Al Naabi1, Myo T. Zar Myint1, Htet H. Kyaw2, and Osama K. Abou-Zied3 — 1Department of Physics, College of Science, Sultan Qaboos University, Al Khoud, Muscat, Sultanate of Oman. — 2Nano Chair, College of Science, Sultan Qaboos University, Al Khoud, Muscat, Sultanate of Oman. — 3Department of Chemistry, College of Science, Sultan Qaboos University, Al Khoud, Muscat, Sultanate of Oman.
The photoluminescence of carbon nanoparticles (CNPs) is fascinating due to its application potential though the PL mechanism is not completely understood. Energy transfer between fluorophores and CNPs is also an important aspect in the field of green energy harvesting. In this work, we studied the energy transfer process between CNPs Rhodamine 6G dye molecules. CNPs were prepared using microwave assisted green synthesis method. The prepared particles were characterized using various tools to understand the structure and morphology. UV-Vis absorption/emission spectroscopy and time-resolved fluorescence decay measurements were done on particles and particle/dye composites. The results were analysed using Stern-Volmer quenching and Fluorescence resonance energy transfer models. Deconvolution analysis were performed on all the emission peaks to get in-depth details of energy transfer mechanism. Quantum yield and molar extinction coefficient of CNPs were estimated in this work. These studies may shine some light on the emission mechanism of CNPs.