中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Probing ultrafast excited state dynamics and nonlinear absorption properties of three star-shaped conjugated oligomers with 1,3,5-triazine core
作者: Wang, Yaochuan1;  Yin, Shuhui1;  Liu, Jianyong2;  Yao, Li1;  Wang, Guiqiu1;  Liu, Dajun1;  Jing, Bo1;  Cheng, Lihong1;  Zhong, Haiyang1;  Shi, Xiaorong3;  Fang, Qiang4;  Qian, Shixiong5
刊名: RSC ADVANCES
发表日期: 2014
DOI: 10.1039/c3ra45544k
卷: 4, 期:21, 页:10960-10967
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
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.
关键词[WOS]: OPTICAL-LIMITING PROPERTIES ;  2-PHOTON ABSORPTION ;  SPECTRAL PROPERTIES ;  CROSS-SECTION ;  MAIN-CHAIN ;  FLUORESCENCE ;  DYE ;  MOLECULES ;  EXCITATION ;  POLYMERS
语种: 英语
WOS记录号: WOS:000332061900064
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145809
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


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

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Wang, Yaochuan]'s Articles
 [Yin, Shuhui]'s Articles
 [Liu, Jianyong]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Wang, Yaochuan]‘s Articles
 [Yin, Shuhui]‘s Articles
 [Liu, Jianyong]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

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

 

 

Valid XHTML 1.0!
Powered by CSpace