Highly Efficient Photo- and Electroluminescence from Two-Coordinate Cu(I) Complexes Featuring Nonconventional N-Heterocyclic Carbenes

Autor: Moon Chul Jung, Peter I. Djurovich, Caleb Coburn, Daniel Sylvinson M. R., Abegail C. Tadle, Mark E. Thompson, Shuyang Shi, Stephen R. Forrest
Rok vydání: 2019
Předmět:
Zdroj: Journal of the American Chemical Society. 141(8)
ISSN: 1520-5126
Popis: A series of six luminescent two-coordinate Cu(I) complexes were investigated bearing nonconventional N-heterocyclic carbene ligands, monoamido-aminocarbene (MAC*) and diamidocarbene (DAC*), along with carbazolyl (Cz) as well as mono- and dicyano-substituted Cz derivatives. The emission color can be systematically varied over 270 nm, from violet to red, through proper choice of the acceptor (carbene) and donor (carbazolyl) groups. The compounds exhibit photoluminescent quantum efficiencies up to 100% in fluid solution and polystyrene films with short decay lifetimes (τ ≈ 1 μs). The radiative rate constants for the Cu(I) complexes ( k
Databáze: OpenAIRE