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题名: Optical limiting properties and ultrafast dynamics of six-branched styryl derivatives based on 1,3,5-triazine
作者: Wang, Yaochuan1, 2;  Jiang, Yihua3;  Hua, Jianli3;  Tian, He3;  Qian, Shixiong1
刊名: JOURNAL OF APPLIED PHYSICS
发表日期: 2011-08-01
DOI: 10.1063/1.3619796
卷: 110, 期:3
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Applied
研究领域[WOS]: Physics
英文摘要: A tri-branched compound T03-a with 1,3,5-triazine as the core, together with two other T03a-based six-branched compounds T03-b and T03-c, was synthesized. Femtosecond Z-scan technique, two-photon excited fluorescence, two-color pump-probe spectroscopy, together with steady-state absorption and fluorescence emission measurements, were employed to investigate the optical properties and the ultrafast dynamics of these compounds in chloroform solutions. The two-photon absorption cross sections (measured by femtosecond Z-scan technique at wavelength of 800 nm) of six-branched compounds T03-b and T03-c were determined to be 4000 GM and 6100 GM, showing 9.5-fold and 14.5-fold enhancement over that of the tri-branched counterparts, T03-a (420 GM). The enhancement was attributed to cooperative interaction between branches, the increased chromophore intensity, as well as the increased delocalization of the electron cloud. Obvious fluorescence quenching and aggregation-induced enhancement of two-photon fluorescence emission were observed in compounds T03-b and T03-c. The excited state dynamics results reveal an ultrafast charge localization from the excited state to the intramolecular charge transfer state in picosecond domain, and different relaxation dynamics happen in the three compounds. The fluorescence quenching of compounds T03-b and T03-c was also discussed by excited state dynamic results. The two-photon absorption-based optical limiting properties of these compounds in the femtosecond domain were also investigated, and the results indicate these materials being good candidates for optical limiting devices. (C) 2011 American Institute of Physics. [doi:10.1063/1.3619796]
关键词[WOS]: 2-PHOTON ABSORPTION PROPERTIES ;  COOPERATIVE ENHANCEMENT ;  ABSORBING MATERIALS ;  CROSS-SECTIONS ;  FLUORESCENCE ;  CHROMOPHORE ;  REGIME
语种: 英语
WOS记录号: WOS:000293956600040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142425
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Fudan Univ, Dept Phys, State Key Lab, Surface Phys Lab, Shanghai 200433, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China

Recommended Citation:
Wang, Yaochuan,Jiang, Yihua,Hua, Jianli,et al. Optical limiting properties and ultrafast dynamics of six-branched styryl derivatives based on 1,3,5-triazine[J]. JOURNAL OF APPLIED PHYSICS,2011,110(3).
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