Yan Ren;Jackv W.Y. Lam;Yongqiang Dong;本忠 唐;Kam Sing Wong
Hong Kong University of Science and Technology;Shandong University
发表时间:2005-1-27
期 刊:Journal of Physical Chemistry B
语 言:English
U R L: http://www.scopus.com/inward/record.url?scp=13444288025&partnerID=8YFLogxK
The aggregation-induced emission (AIE) properties of 1,1,2,3,4,5- hexaphenylsilole (HPS) and poly{11-[(1,2,3,4,5-pentaphenylsilolyl)oxy]-1-phenyl- 1-undecyne} (PS9PA) were studied by time-resolved fluorescence technique. The enhanced fluorescence and long fluorescent lifetime were obtained for the sample in an aggregate state as compared to the sample in solution. The time-decay of fluorescence of HPS and PS9PA in high viscosity solvents and low-temperature glasses has also been measured in detail to further investigate the possible mechanism for AIE. Enhanced light emission and long fluorescence lifetime were detected for both HPS and PS9PA in the solution-thickening and -cooling experiments. These results provided direct evidence that the enhanced photoluminescence (PL) efficiency is due to restricted intramolecular motion, which ascribes AIE to the deactivation of nonradiative decay caused by restricted torsional motions of the molecules in the solid state or aggregate form.
化合物
工程与材料科学
物理与天文学
Scopus度量
年份 | CiteScore | SJR | SNIP |
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1996 | |||
1997 | |||
1998 | |||
1999 | 1.658 | 1.785 | |
2000 | 2.138 | 1.529 | |
2001 | 2.177 | 1.5 | |
2002 | 2.201 | 1.513 | |
2003 | 2.163 | 1.508 | |
2004 | 2.199 | 1.536 | |
2005 | 2.335 | 1.487 | |
2006 | 2.422 | 1.421 | |
2007 | 2.407 | 1.28 | |
2008 | 2.58 | 1.366 | |
2009 | 2.266 | 1.348 | |
2010 | 1.881 | 1.214 | |
2011 | 6.3 | 1.801 | 1.213 |
2012 | 6.7 | 1.943 | 1.243 |
2013 | 6.3 | 1.504 | 1.195 |
2014 | 5.9 | 1.449 | 1.13 |
2015 | 5.9 | 1.335 | 1.057 |
2016 | 6.1 | 1.345 | 1.017 |
2017 | 6 | 1.331 | 0.993 |
2018 | 5.8 | 1.109 | 0.979 |
2019 | 5.2 | 0.943 | 0.962 |
2020 | 5.1 | ||
2021 |
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