Enhancement of the intrinsic fluorescence of adenine using aluminum nanoparticle arrays

Year: 2015

Authors: Jha S.K., Mojarad N., Agio M., Löffler J.F., Ekinci Y.

Autors Affiliation: ETH, Dept Mat, Lab Met Phys & Technol, CH-8093 Zurich, Switzerland; Paul Scherrer Inst, Lab Micro & Nanotechnol, CH-5232 Villigen, Switzerland; ETH, Dept Mech & Proc Engn, CH-8803 Ruschlikon, Switzerland; Natl Inst Opt CNR INO, I-50019 Sesto Fiorentino, Italy; European Lab Nonlinear Spect LENS, I-50019 Sesto Fiorentino, Italy.

Abstract: This study demonstrates the metal-enhanced fluorescence of adenine using aluminum nanoparticle arrays in the deep UV range. It achieves the reproducible intensity enhancement of intrinsic fluorescence up to 80 on well-defined aluminum nanoparticle arrays at 257 nm excitation. In addition to a high signal enhancement, a strong modification of the fluorescence emission spectrum of adenine is observed. This study illustrates that the label-free detection of DNA bases and proteins that have low intrinsic fluorescence and absorption bands in the deep UV range can be facilitated using aluminum nanostructures. (C) 2015 Optical Society of America

Journal/Review: OPTICS EXPRESS

Volume: 23 (19)      Pages from: 24719  to: 24729

More Information: Financial supports by an ETH Research Grant (TH-29/07-3) and a SNF Grant (200020_149891) are gratefully acknowledged. Part of this work was performed at the Swiss Light Source (SLS), Paul Scherrer Institute, Switzerland.
KeyWords: Aluminum; Emission spectroscopy; Metal nanoparticles; Nanoparticles; Nanostructures; Aluminum nanoparticles; DNA basis; Fluorescence emission spectra; High signals; Intensity enhancement; Intrinsic fluorescence; Label-free detection; Metal enhanced fluorescence; Fluorescence
DOI: 10.1364/OE.23.024719

ImpactFactor: 3.148
Citations: 27
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