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- Title
Blue-shift of photoluminescence induced by coupling effect of a nanohybrid composed of fluorophore-phenothiazine derivative and gold nanoparticles.
- Authors
Kong, Lin; Yang, Jia-xiang; Chen, Qi-yu; Zhang, Qiong; Ke, Wen-dong; Xue, Zhao-ming; Zhou, Hong-ping; Wu, Jie-ying; Jin, Bao-kang; Tian, Yu-peng
- Abstract
A flurophore-phenothiazine derivative {2-[(10-ethyl-10H-phenothiazin-3-yl)-methylene] malononitrile, abbreviated as L} is designed, synthesized, and characterized by single crystal X-ray diffraction analysis. Further, L is used to couple with Au NPs to construct L-Au nanohybrid. Upon the coupling effect between L and Au components, blue-shifted photoluminescence with an obvious increased FL lifetime has been achieved. Surface enhanced Raman scattering analysis reveals that L molecules couple with Au NPs through S atoms. The coupling 'hot spot' and the energy match between the Femi level of Au NPs and the frontier molecular orbital energy of L are effective factors in distributing the photogenerated electrons at the interface to tune the optical property. Graphical Abstract: [Figure not available: see fulltext.]A D-π-A type phenothiazine derivative (L) was synthesized and used to prepare nanohybrid with Au NPs. L molecules coupled with Au NPs through S atoms, which brought about significant blue-shift of the fluorescence and an obvious increase of FL lifetime.
- Subjects
PHOTOLUMINESCENCE; COUPLING agents (Chemistry); NANOCOMPOSITE materials; FLUOROPHORES; PHENOTHIAZINE; CHEMICAL derivatives; GOLD nanoparticles; MALONONITRILE
- Publication
Journal of Nanoparticle Research, 2014, Vol 16, Issue 3, p1
- ISSN
1388-0764
- Publication type
Article
- DOI
10.1007/s11051-014-2324-3