Blue-emitting Ir(III) phosphors with ancillary 4,6-difluorobenzyl diphenylphosphine based cyclometalate.
Treatment of difluorobenzyldiphenylphosphine with the Ir(III) dimer [(dfppy)2Ir(mu-Cl)]2 gives (N,N)-trans-[Ir(dfppy)2(dfbdpH)Cl], followed by skeletal isomerization to form its (N,N)-cis analogue, and then the fully cyclometalated complex [Ir(dfppy)2(dfbdp)]; the last complex and its derivative are suitable for fabrication of true-blue phosphorescent OLEDs.
Hung
Jui-Yi
JY
Department of Chemistry, National Tsing Hua University, Hsinchu, 300, Taiwan.
Chi
Yun
Y
Pai
I-Hsuan
IH
Yu
Ya-Chien
YC
Lee
Gene-Hsiang
GH
Chou
Pi-Tai
PT
Wong
Ken-Tsung
KT
Chen
Chung-Chia
CC
Wu
Chung-Chih
CC