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- W4285999744 abstract "Herein, we scrutinize the photophysical and electronic changes on graphene quantum dots (GQDs) which occurs as a consequence of both type of covalent and non-covalent functionalization using Tetraaminophenylporphyrin (TAPP). Covalent functionalization resulted in amide bond between GQD and TAPP (GQD-CONH-TAPP), while electrostatic interactions, hydrogen bonding and π-π interactions together contribute to the binding in non-covalent functionalization. Outstanding difference between both of the functionalized GQDs were observed in their UV-Visible absorption spectra, photoluminescence (PL) spectra and time-correlated single photon counting (TCSPC) measurements. GQD-CONH-TAPP acts as a charge separated system having C1 point group. In case of GQD-TAPP, the non-covalent nanohybrid system, photoinduced electron transfer from TAPP to GQD occurs with a dynamic quenching constant of 21.89×103 M−1 and bimolecular rate constant of 2.77×1014 M−1s−1. Feasibility of this electron transfer is reinforced by the negative ΔGPET value and the theoretical studies." @default.
- W4285999744 created "2022-07-21" @default.
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- W4285999744 date "2022-07-20" @default.
- W4285999744 modified "2023-09-24" @default.
- W4285999744 title "Probing the Photophysics of Covalently and Non‐covalently Bonded Graphene Quantum Dots‐Tetraaminophenylporphyrin Nanohybrids" @default.
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- W4285999744 doi "https://doi.org/10.1002/slct.202201265" @default.
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