Abstract
Plasmonic nanostructures and carbon dots (C-dots) are fascinating optical materials, utilized in imaging, sensing, and color generation. Interaction between plasmonic materials and C-dots may lead to new hybrid materials with controllable optical properties. Herein, we demonstrate for the first time coupling between plasmonic modes and C-dots deposited upon a plasmonic silver hole array. The coupling leads to a remarkable visual attenuation and shifts of the plasmonic wavelengths (i.e., color tuning). In particular, the C-dots-plasmon couplings and pertinent color transformations depend both upon the C-dots' fluorescence emission wavelengths and functional residues displayed upon the C-dots' surface. This optical modulation corresponds to energy level alignment and consequent energy transfer between the C-dots and the plasmonic silver hole array. Notably, the energy coupling observed in the C-dot-plasmonic hybrid system allows distinguishing between C-dots species exhibiting similar optical properties, albeit displaying different functional residues.
Original language | English |
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Pages (from-to) | 6080-6085 |
Number of pages | 6 |
Journal | Journal of Physical Chemistry Letters |
Volume | 8 |
Issue number | 24 |
DOIs | |
State | Published - 21 Dec 2017 |
Bibliographical note
Publisher Copyright:© 2017 American Chemical Society.
Funding
A.S. and L.E. acknowledge the GIF Grant No. 203785. S.K.B. is grateful to the Planning and Budgeting Committee (PBC) of the Israeli Council for Higher Education for an Outstanding Postdoctoral Fellowship. R.J. is grateful for financial assistance, MoST Infrastructure Grant No. 3-12974.
Funders | Funder number |
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German-Israeli Foundation for Scientific Research and Development | 203785 |
Ministry of Science and Technology, Taiwan | 3-12974 |
Council for Higher Education |