ICCAS OpenIR
Design of star-shaped molecular architectures based on carbazole and phosphine oxide moieties: towards amorphous bipolar hosts with high triplet energy for efficient blue electrophosphorescent devices
Ding, Junqiao1; Wang, Qi1,2; Zhao, Lei1; Ma, Dongge1; Wang, Lixiang1; Jing, Xiabin1; Wang, Fosong1
2010
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume20Issue:37Pages:8126-8133
AbstractWith a carbazole moiety as the electron donor and a phosphine-oxide moiety as the electron acceptor, two novel star-shaped bipolar hosts, 4,4',4 ''-tri(N-carbazolyl)triphenylphosphine oxide (TCTP) and 3,6-bis(diphenylphosphoryl)-9-(4'-(diphenylphosphoryl)phenyl)carbazole (TPCz), have been designed and synthesized. Their topology structure differences are that the phosphine-oxide moiety is located in the molecular centre and the periphery for TCTP and TPCz, respectively. The star-shaped architecture imparts them with high decomposition temperatures (T(d): 497 degrees C for TCTP and 506 degrees C for TPCz) and results in the formation of a stable amorphous glassy state (T(g): 163 degrees C for TCTP and 143 degrees C for TPCz), while the phosphine oxide linkage ensures the disrupted conjugation and the high triplet energy (>3.0 eV). In addition, both TCTP and TPCz possess a bipolar transporting capability. However, TCTP mostly transports holes and TPCz primarily conducts electrons. On the basis of appropriate device configurations, high performance blue electrophosphorescent devices with comparable efficiency (35.0-36.4 cd A(-1), 15.9-16.7%) have been realized using TCTP and TPCz as the host for the blue phosphor, respectively. Compared with the unipolar host, 4,4',4 ''-tri(N-carbazolyl)triphenylamine (TCTA, 15.9 cd A(-1), 7.8%), the efficiency is improved by more than two-fold. As far as the obtained state-of-the-art performance is concerned, we think that these novel materials should provide an avenue for the design of amorphous bipolar hosts with high triplet energy used for blue PhOLEDs on a star-shaped scaffold.
DOI10.1039/c0jm00846j
Indexed BySCI
Language英语
WOS IDWOS:000281726600032
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:114[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70572
Collection中国科学院化学研究所
Corresponding AuthorWang, Lixiang
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Ding, Junqiao,Wang, Qi,Zhao, Lei,et al. Design of star-shaped molecular architectures based on carbazole and phosphine oxide moieties: towards amorphous bipolar hosts with high triplet energy for efficient blue electrophosphorescent devices[J]. JOURNAL OF MATERIALS CHEMISTRY,2010,20(37):8126-8133.
APA Ding, Junqiao.,Wang, Qi.,Zhao, Lei.,Ma, Dongge.,Wang, Lixiang.,...&Wang, Fosong.(2010).Design of star-shaped molecular architectures based on carbazole and phosphine oxide moieties: towards amorphous bipolar hosts with high triplet energy for efficient blue electrophosphorescent devices.JOURNAL OF MATERIALS CHEMISTRY,20(37),8126-8133.
MLA Ding, Junqiao,et al."Design of star-shaped molecular architectures based on carbazole and phosphine oxide moieties: towards amorphous bipolar hosts with high triplet energy for efficient blue electrophosphorescent devices".JOURNAL OF MATERIALS CHEMISTRY 20.37(2010):8126-8133.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ding, Junqiao]'s Articles
[Wang, Qi]'s Articles
[Zhao, Lei]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ding, Junqiao]'s Articles
[Wang, Qi]'s Articles
[Zhao, Lei]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ding, Junqiao]'s Articles
[Wang, Qi]'s Articles
[Zhao, Lei]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.