首页 | 本学科首页   官方微博 | 高级检索  
     


Metal enhanced fluorescence of the fluorescent brightening agent Tinopal-CBX near silver island film
Authors:Hirdyesh MishraYongxia Zhang  Chris D Geddes
Affiliation:a Institute of Fluorescence, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD 21202, USA
b Department of Chemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD 21202, USA
Abstract:Metal-enhanced fluorescence (MEF) studies of the optical brightener Tinopal-CBS (4,4′- distyrylbiphenyl sulfonic sodium salt) have been undertaken using steady-state and time resolved fluorescence measurements on silver island films (SiFs) deposited on glass slides and silver nano-particles adsorbed onto cellulose based filter paper. Nearly a 4.5 fold enhancement in fluorescence intensity is observed from both SiFs and nano-particle deposited cellulose filter paper. In addition an enhanced photostability and decrease in decay time is also observed on SiFs. These results are consistent with two distinct mechanisms of MEF, firstly coupling and transferring of the excited states energies of fluorophores to surface plasmons in the silver island deposited glass films, and secondly, an electric field enhancement effect, which facilitates enhanced absorption of the fluorophores. Our findings reveal significant benefits of enhanced luminescence and prolonged photostability of Tinopal CBS. As such, Plasmon-tinopal constructs offer new material opportunities as well as multifarious applications in the life sciences.
Keywords:Metal-enhanced fluorescence  Optical brightener tinopal-CBS  Surface plasmons  Plasmon enhanced fluorescence  Surface plasmon enhanced fluorescence  Photostability
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号