ICCAS OpenIR
Ir(ppy)(3) phosphorescent microrods and nanowires: promising micro-phosphors
Wang, Hao1,2; Liao, Qing1; Fu, Hongbing1; Zeng, Yi1,2; Jiang, Ziwen1,2; Ma, Jinshi1; Yao, Jiannian1
2009
Source PublicationJOURNAL OF MATERIALS CHEMISTRY
ISSN0959-9428
Volume19Issue:1Pages:89-96
AbstractWe prepared crystalline Ir(ppy)(3) microrods through a facile self-assembly growth method by employing the so-called reprecipitation technique, and Ir(ppy)(3) nanowires by a solvent-evaporation route. Both have lengths up to several tens of micrometer, but possess significantly different diameters: 1 mu m for microrods and 100 nm for nanowires. The electron diffraction (ED) and X-ray diffraction (XRD) results clarify that both microrods and nanowires preferentially grow along the crystal [001] direction. However, the former have a regular hexagonal geometry and single crystalline in nature, while the latter are polycrystalline with a round cross section. Remarkably, microrods and nanowires of Ir(ppy)(3) present distinct optical properties. The phosphorescence decay of Ir(ppy)(3) microrods and nanowires is much faster than that in degassed solution and polymethylmethacrylate (PMMA) film. The phosphorescence green color of microrods is similar to that of Ir(ppy)(3) molecules doped in PMMA films, while nanowires actually emit yellow light probably from the low-energy trap as a result of its polycrystalline nature. Furthermore, the transverse nanoscale and longitudinal microscale dimensions and well-defined faceting nature of microrods enable the observation of evident optical waveguiding. No optically pumped lasing is observed because of intense triplet-triplet exciton annihilation. Our results afford a novel strategy of phosphorescence emission color tuning by controlling the nano- to microstructure dimensions. The microrod phosphorescence waveguides may be used as building blocks for future miniaturized photonic devices.
DOI10.1039/b814007c
Indexed BySCI
Language英语
WOS IDWOS:000263271900011
PublisherROYAL SOC CHEMISTRY
Citation statistics
Cited Times:46[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67446
Collection中国科学院化学研究所
Corresponding AuthorFu, Hongbing
Affiliation1.Chinese Acad Sci, Inst Chem, BNLMS, Key Lab Photochem, Zhongguancun Beijing 100190, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hao,Liao, Qing,Fu, Hongbing,et al. Ir(ppy)(3) phosphorescent microrods and nanowires: promising micro-phosphors[J]. JOURNAL OF MATERIALS CHEMISTRY,2009,19(1):89-96.
APA Wang, Hao.,Liao, Qing.,Fu, Hongbing.,Zeng, Yi.,Jiang, Ziwen.,...&Yao, Jiannian.(2009).Ir(ppy)(3) phosphorescent microrods and nanowires: promising micro-phosphors.JOURNAL OF MATERIALS CHEMISTRY,19(1),89-96.
MLA Wang, Hao,et al."Ir(ppy)(3) phosphorescent microrods and nanowires: promising micro-phosphors".JOURNAL OF MATERIALS CHEMISTRY 19.1(2009):89-96.
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
[Wang, Hao]'s Articles
[Liao, Qing]'s Articles
[Fu, Hongbing]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang, Hao]'s Articles
[Liao, Qing]'s Articles
[Fu, Hongbing]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang, Hao]'s Articles
[Liao, Qing]'s Articles
[Fu, Hongbing]'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.