Application of 1663-45-2. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: 1,2-Bis(diphenylphosphino)ethane, is researched, Molecular C26H24P2, CAS is 1663-45-2, about Highly Photoluminescent Blue Ionic Platinum-Based Emitters.
New cycloplatinated N-heterocyclic carbene (NHC) compounds with chelate diphosphines (P^P) as ancillary ligands: [Pt(R-C^C*)(P^P)]PF6 (R = H, P^P = dppm (1A), dppe (2A), dppbz (3A); R = CN, P^P = dppm (1B), dppe (2B), dppbz (3B)) have been prepared from the corresponding starting material [{Pt(R-C^C*)(μ-Cl)}2] (R = H, A, R = CN, B) and fully characterized. The new compound A has been prepared by a stepwise protocol. The photophys. properties of 1A-3A and 1B-3B have been widely studied and supported by the time-dependent-d. functional theory. These compounds show an efficient blue (dppe, dppbz) or cyan (dppm) emission in PMMA films (5 weight %), with photoluminescence quantum yield (PLQY) ranging from 30% to 87% under an argon atm. This emission has been assigned mainly to transitions from 3ILCT [π(NHC) → π*(NHC)] excited states with some 3LL’CT [π(NHC) → π*(P^P)] character. The electroluminescence of these materials in proof-of-concept solution-processed organic light-emitting diodes containing 3A and 3B as dopants was investigated. The CIE coordinates for devices based on 3A (0.22, 0.41) and 3B (0.24, 0.44) fit within the sky blue region. Highly photoluminescent ionic platinum-based emitters, [Pt(R-C^C*)(P^P)]PF6, were prepared They show an efficient blue or cyan emission in PMMA films (5 weight %), with PLQY ranging from 30% to 87%. Solution-processed organic light-emitting diodes based on 3A and 3B show CIE coordinates (0.22, 0.41 (3A); 0.24, 044 (3B)) fitting within the sky blue region.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis