TY - JOUR
T1 - Synthesis and functional properties of oligofluorenyl-dibenzothiophene S,S′-dioxides end-capped by diphenylamine moieties
AU - Yang, Fan
AU - Sun, Kang
AU - Cao, Zi Jian
AU - Li, Zhong Hui
AU - Wong, Man Shing
N1 - Funding Information:
This work was supported by Scientific & Technological Support Project of Sichuan Province (No.2008GZ0041), China.
PY - 2008/6
Y1 - 2008/6
N2 - 2,7- and 3,6-Bis [7-diphenylamino-9,9-di(n-butyl) fluorene-2-yl]dibenzo-thiophene S,S′-dioxides, 2,7-OF(2)BTO-NPh and 3,6-OF(2)BTO-NPh have been synthesized by a convergent approach using palladium-catalyzed Suzuki cross-coupling or copper-catalyzed Buchwald's amination as the key reactions. The functional properties including thermal stabilities, optical properties, electrochemical properties of these two oligomers, as well as the performance of 2,7-OF(2)BTO-NPh-based OLEDs have been investigated and discussed. With a simple three-layer structure of ITO/3,6-OF(2)BTO-NPh (40 nm)/F-TBB (15 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (75 nm), the luminance efficiency of 3,6-OF(2)BTO-NPh-based OLEDs can also reach up to 0.42 cd/A with a maximum brightness of 1620 cd/m2.
AB - 2,7- and 3,6-Bis [7-diphenylamino-9,9-di(n-butyl) fluorene-2-yl]dibenzo-thiophene S,S′-dioxides, 2,7-OF(2)BTO-NPh and 3,6-OF(2)BTO-NPh have been synthesized by a convergent approach using palladium-catalyzed Suzuki cross-coupling or copper-catalyzed Buchwald's amination as the key reactions. The functional properties including thermal stabilities, optical properties, electrochemical properties of these two oligomers, as well as the performance of 2,7-OF(2)BTO-NPh-based OLEDs have been investigated and discussed. With a simple three-layer structure of ITO/3,6-OF(2)BTO-NPh (40 nm)/F-TBB (15 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (75 nm), the luminance efficiency of 3,6-OF(2)BTO-NPh-based OLEDs can also reach up to 0.42 cd/A with a maximum brightness of 1620 cd/m2.
KW - Dibenzothiophene S,S′-dioxide
KW - Electroluminescent property
KW - Functional properties
KW - OLED
KW - Oligomer
KW - Synthesis
UR - http://www.scopus.com/inward/record.url?scp=45049088815&partnerID=8YFLogxK
U2 - 10.1016/j.synthmet.2008.02.012
DO - 10.1016/j.synthmet.2008.02.012
M3 - Journal article
AN - SCOPUS:45049088815
SN - 0379-6779
VL - 158
SP - 391
EP - 395
JO - Synthetic Metals
JF - Synthetic Metals
IS - 10
ER -