Concentration‐mediated multicolor fluorescence polymer carbon dots |
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| Authors: | Chan Jin Jeong Gibaek Lee Insik In Sung Young Park |
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| Institution: | 1. Department of IT Convergence, Korea National University of Transportation, Chungju, Republic of Korea;2. Department of Chemical and Biological Engineering, Korea National University of Transportation, Chungju, Republic of Korea;3. Department of Polymer Science and Engineering, Korea National University of Transportation, Chungju, Republic of Korea |
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| Abstract: | Polymer dots (PDs) showing concentration‐mediated multicolor fluorescence were first prepared from sulfuric acid‐treated dehydration of Pluronic® F‐127 in a single step. Pluronic‐based PDs (P‐PDs) showed high dispersion stability in solvent media and exhibited a fluorescence emission that was widely tunable from red to blue by adjusting both the excitation wavelengths and the P‐PD concentration in an aqueous solution. This unique fluorescence behavior of P‐PDs might be a result of cross‐talk in the fluorophores of the poly(propylene glycol)‐rich core inside the P‐PD through either energy transfer or charge transfer. Reconstruction of the surface energy traps of the P‐PDs mediated through aggregation may lead to a new generation of carbon‐based nanomaterials possessing a fluorescence emission and tunable by adjusting the concentration. These structures may be useful in the design of multifunctional carbon nanomaterials with tunable emission properties according to a variety of internal or external stimuli. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | Pluronic fluorescence concentration polymer dot multicolor |
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