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- W2092124529 abstract "The electronic structures and photophysical properties of eight Pt-complexes with different N-heterocyclic carbene ligands and potential to serve as light emitting diode materials were investigated by density functional theory and time-dependent density functional theory, employing the BP86 functional for geometry optimisations, SAOP potential for excited state calculations and all-electron TZ2P basis set throughout. Non-radiative and radiative decay rate constants were determined for each system through analyses of the geometric relaxations, d-orbital splitting and spin–orbit couplings at the optimised S0 and T1 geometries. Three Pt-systems bound to two N-heterocyclic carbenes were shown to be nonemissive, while a fourth was shown to be emissive from the T1 excited state. Similar T1-initated emission was observed for three other Pt-systems investigated, each bound to four N-heterocyclic carbenes, while a fourth similarly tetra-ligated system showed T2-initation of emission. The results highlight the coupling of ligand-identity to photophysical properties and more importantly, the potential for rational optimisation and tuning of emission wavelengths and phosphorescent efficiencies. Encouragingly, two of the tetra-N-heterocyclic carbene ligated systems show strong potential to serve as highly-efficient blue and green light emitting materials, respectively." @default.
- W2092124529 created "2016-06-24" @default.
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- W2092124529 date "2011-01-01" @default.
- W2092124529 modified "2023-09-23" @default.
- W2092124529 title "Forward molecular design for highly efficient OLED emitters: A theoretical analysis of photophysical properties of platinum(ii) complexes with N-heterocyclic carbene ligands" @default.
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- W2092124529 doi "https://doi.org/10.1039/c0dt01299h" @default.
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