title: Highly efficient thermally activated fluorescence of a new rigid Cu(I) complex [Cu(dmp)(phanephos)]+.
abstract: The rigid [Cu(dmp)(phanephos)](+) complex displays a high luminescence quantum yield of 80% at ambient temperature. In contrast to the long-lived phosphorescence of 240 μs at T < 120 K with a radiative rate of k(r) = 3 × 10(3) s(-1), the ambient-temperature emission represents a thermally activated delayed fluorescence (DF) with a decay time of only 14 μs and a radiative rate of k(r)(DF) = 6 × 10(4) s(-1). Evidence for the involvement of the excited singlet state in the emission process is presented. This material has high potential to be applied in efficient OLEDs taking advantage of the singlet harvesting mechanism.
authors.affiliation: Universität Regensburg, Institut für Physikalische und Theoretische Chemie, Universitätstr. 31, D-93040 Regensburg, Germany. rafal.czerwieniec@ur.de
authors.forename: Rafał
authors.initials: R
authors.lastname: Czerwieniec
authors.forename: Konrad
authors.initials: K
authors.lastname: Kowalski
authors.forename: Hartmut
authors.initials: H
authors.lastname: Yersin
mesh_terms: D003300:Copper / Q000737:chemistry*; D005453:Fluorescence; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010618:Phenanthrolines / Q000737:chemistry*; D010720:Phosphines / Q000737:chemistry*; D011083:Polycyclic Compounds / Q000737:chemistry*; D013696:Temperature
chemical_list: C585681:4,12-bis(diphenylphosphino)-(2.2)paracyclophane; D009942:Organometallic Compounds; D010618:Phenanthrolines; D010720:Phosphines; D011083:Polycyclic Compounds; D003300:Copper; C002701:neocuproine