Platinum Poly-yne Featuring N-Heterocyclic Carbene Ligands: Synthesis, Properties, and Organic Light-Emitting Diode Application

Autor(es)

He, Ru ^{[1, 2]} ; Domingues, Raquel A. ^{[3, 2]} ; Valandro, Silvano ^[2] ; Schanze, Kirk S. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Florida, Dept Chem, Gainesville, FL 32611 - USA

^[2] Univ Texas San Antonio, Dept Chem, San Antonio, TX 78249 - USA

^[3] Univ Fed Sao Paulo, Inst Sci & Technol, BR-12231280 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MACROMOLECULES; v. 54, n. 21, p. 9888-9895, NOV 9 2021.
• Citações Web of Science: 0

Resumo

We report the synthesis, characterization, and organic light-emitting diode (OLED) application of the first example of a platinum poly-yne (NPtAP) featuring N-heterocyclic carbene (NHC) ligands. NPtAP was synthesized via the Cu(I)-catalyzed AA/BB type polymerization reaction with M-n = 8400 g mol(-1) and D = 1.6. The bulky and strong sigma-donating NHC ligands bearing chiral 2-ethylhexyl substituents help to limit the interchain interaction and destabilize the nonemissive metal-centered d-d state, resulting in enhancement of the photoluminescence quantum yield of the platinum poly-yne. The prototype solution-processed OLEDs employing NPtAP as the emitter were successfully fabricated and display yellow-green electroluminescence (EL). (AU)

• Processo FAPESP: 19/06882-1 - Estudo fotofísico de estado triplete em sistemas doador-aceptor pi-conjugados em cromóforos derivados de carbenos de platina (II) para aplicação em OLEDs fosforescentes
• Beneficiário: Raquel Aparecida Domingues
• Modalidade de apoio: Bolsas no Exterior - Pesquisa