TY  - JOUR
T1  - Synthesis and electroluminescence properties of highly efficient dual core chromophores with side groups for blue emission
A1  - Lee, Hayoon
A1  - Kim, Beomjin
A1  - Kim, Seungho
A1  - Kim, Joonghan
A1  - Lee, Jaehyun
A1  - Shin, Hwangyu
A1  - Lee, Ji-Hoon
A1  - Park, Jongwook
Y1  - 2014
SP  - 4737
EP  - 4747
JF  - Journal of Materials Chemistry C
JO  - J. Mater. Chem. C
VL  - 2
IS  - 24
PB  - The Royal Society of Chemistry
SN  - 2050-7526
DO  - 10.1039/C4TC00075G
M3  - 10.1039/C4TC00075G
UR  - http://dx.doi.org/10.1039/C4TC00075G
N2  - Highly efficient blue emitting materials consisting of dual core derivatives with phenyl and/or naphthyl side groups and asymmetric or symmetric structures were designed and synthesized. The asymmetric structures 1-naphthalen-1-yl-6-(10-phenyl-anthracen-9-yl)-pyrene (Ph-AP-Na) and 1-(10-naphthalen-1-yl-anthracen-9-yl)-6-phenyl-pyrene (Na-AP-Ph), and the symmetric structures 1-phenyl-6-(10-phenyl-anthracen-9-yl)-pyrene (Ph-AP-Ph) and 1-naphthalen-1-yl-6-(10-naphthalen-1-yl-anthracen-9-yl)-pyrene (Na-AP-Na) were synthesized. Of the synthesized compounds, Na-AP-Na was found to exhibit the highest EL device efficiency of 5.46 cd A−1. Ph-AP-Na, Na-AP-Ph, Ph-AP-Ph, and Na-AP-Na exhibit EL maximum values of real blue color in the range 455 nm to 463 nm. The y values of their color coordinates are within the range 0.125 to 0.142, so these compounds exhibit good blue color coordinates for displays. The lifetime of the Na-AP-Na device was more than three times longer than that of the AP dual core (1-anthracen-9-yl-pyrene) device.
ER  -