Probing ultrafast excited state dynamics and nonlinear absorption properties of three star-shaped conjugated oligomers with 1,3,5-triazine core
文献类型：期刊论文
| 作者 | Wang, Yaochuan1; Yin, Shuhui1; Liu, Jianyong2; Yao, Li1; Wang, Guiqiu1; Liu, Dajun1; Jing, Bo1; Cheng, Lihong1; Zhong, Haiyang1; Shi, Xiaorong3 |
| 刊名 | rsc advances
 |
| 出版日期 | 2014 |
| 卷号 | 4期号:21页码:10960-10967 |
| 英文摘要 | the effects of different bridging fluorene units on the two-photon absorption (tpa) properties and ultrafast response of organic conjugated oligomers were investigated for three star-shaped oligomers named tft-1, tft-2 and tft-3. these three oligomers are composed of the same central core 1,3,5-triazine, with three arms that consist of specific numbers of bridging fluorene groups and with triphenylamine as electron-donating group at the terminal end of each arm. the studies on these oligomers were carried out by using two-photon excited fluorescence (tpf), degenerate pump-probe techniques, transient absorption spectroscopy and time-resolved photoluminescence (trpl) methods. the tpa cross-sections were determined to be 1509 gm, 1260 gm and 789 gm for tft-1, tft-2 and tft-3, respectively, decreasing with the increase of bridging fluorene number. ultrafast dynamics results show that there is a fast intramolecular charge transfer (ict) formation time of about several ps and a relatively long decay process of the ict state. the formation time of ict was found to increase from tft-1 (1.9 ps), to tft-2 (3.0 ps) and tft-3 (6.3 ps), with the increased number of the fluorene bridge, which may explain the action of fluorene bridge on the electron transmission properties, the ict properties and the tpa behavior. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | optical-limiting properties ; 2-photon absorption ; spectral properties ; cross-section ; main-chain ; fluorescence ; dye ; molecules ; excitation ; polymers |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332061900064 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/145809]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Maritime Univ, Dept Phys, Dalian 110626, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 110626, Peoples R China 3.SIPO, Patent Off, Beijing Patent Examinat Cooperat Ctr, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Shanghai Inst Organ Chem, Lab Polymer Mat, Shanghai 200032, Peoples R China 5.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Yaochuan,Yin, Shuhui,Liu, Jianyong,et al. Probing ultrafast excited state dynamics and nonlinear absorption properties of three star-shaped conjugated oligomers with 1,3,5-triazine core[J]. rsc advances,2014,4(21):10960-10967. |
| APA | Wang, Yaochuan.,Yin, Shuhui.,Liu, Jianyong.,Yao, Li.,Wang, Guiqiu.,...&Qian, Shixiong.(2014).Probing ultrafast excited state dynamics and nonlinear absorption properties of three star-shaped conjugated oligomers with 1,3,5-triazine core.rsc advances,4(21),10960-10967. |
| MLA | Wang, Yaochuan,et al."Probing ultrafast excited state dynamics and nonlinear absorption properties of three star-shaped conjugated oligomers with 1,3,5-triazine core".rsc advances 4.21(2014):10960-10967. |
入库方式： OAI收割
来源：大连化学物理研究所
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