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

Author(s)

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

Affiliation

^[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

• Document type: Journal article
• Source: MACROMOLECULES; v. 54, n. 21, p. 9888-9895, NOV 9 2021.
• Web of Science Citations: 0

Abstract

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)

• FAPESP's process: 19/06882-1 - Photophysical study of triplet state in pi-conjugated donor-acceptor systems in platinum (II)-carbene derivative chromophers for phosphorescent OLED application
• Grantee: Raquel Aparecida Domingues
• Support Opportunities: Scholarships abroad - Research