Electric Switching of Fluorescence Decay in Gold–Silica–Dye Nematic Nanocolloids Mediated by Surface Plasmons
- Univ. of Colorado, Boulder, CO (United States). Soft Materials Research Center
- Univ. of Colorado, Boulder, CO (United States). Soft Materials Research Center; National Renewable Energy Lab. (NREL), Golden, CO (United States). Renewable and Sustainable Energy Inst.
Tunable composite materials with interesting physical behavior can be designed through integrating unique optical properties of solid nanostructures with facile responses of soft matter to weak external stimuli, but this approach remains challenged by their poorly controlled coassembly at the mesoscale. Using scalable wet chemical synthesis procedures, we fabricated anisotropic gold–silica-dye colloidal nanostructures and then organized them into the device-scale (demonstrated for square-inch cells) electrically tunable composites by simultaneously invoking molecular and colloidal self-assembly. We show that the ensuing ordered colloidal dispersions of shape-anisotropic nanostructures exhibit tunable fluorescence decay rates and intensity. Here in this paper, we characterize how these properties depend on low-voltage fields and polarization of both the excitation and emission light, demonstrating a great potential for the practical realization of an interesting breed of nanostructured composite materials.
- Research Organization:
- Univ. of Colorado, Boulder, CO (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
- Grant/Contract Number:
- SC0010305
- OSTI ID:
- 1595097
- Journal Information:
- ACS Nano, Vol. 10, Issue 7; ISSN 1936-0851
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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