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Block Copolymer Stabilized Liquid Nanodroplets Facilitate Efficient Triplet Fusion-Based Photon Upconversion in Solid Polymer Matrices
Block Copolymer Stabilized Liquid Nanodroplets Facilitate Efficient Triplet Fusion-Based Photon Upconversion in Solid Polymer Matrices
- Source :
- ACS applied materialsinterfaces. 13(36)
- Publication Year :
- 2021
-
Abstract
- Sensitized triplet-triplet annihilation-based photon upconversion is a photo-physical process that affords anti-Stokes-shifted emission after annihilation of two metastable triplet excitons of an emitter dye and the formation of a fluorescent singlet state. While this process readily occurs in solutions under conditions where the mobility of the dye molecules is high, particular architectures are required to facilitate efficient energy transfers in solid polymers. One possibility is to incorporate liquid upconverting domains into solid polymer matrices. Another possibility is to reduce the intermolecular distance between the dyes below the Dexter radius, allowing exciton migration via triplet hopping. We introduce herein nanostructured materials that combine both of these features. These glassy nanostructured polymer systems contain liquid upconverting nanodroplets that are stabilized with a block copolymer surfactant and are fabricated under ambient conditions in a facile one-step protocol. The dyes concentrate in the nanostructured liquid domains, and this enables hopping-mediated ET and TTA between the dyes and leads to an upconversion efficiency of similar to 20%.
- Subjects :
- Materials science
nanostructured polymer
Exciton
Physics::Optics
block copolymer surfactant
nmr
energy-transfer
nanofibers
Copolymer
Molecule
General Materials Science
Singlet state
Physics::Chemical Physics
chemistry.chemical_classification
anti-stokes emitters
Intermolecular force
sensitized triplet−triplet annihilation
subsolar irradiance
wavelength shifting
aqueous-solutions
Polymer
anti-Stokes emitter
photon upconversion
Fluorescence
Photon upconversion
Condensed Matter::Soft Condensed Matter
chemistry
annihilation
Chemical physics
cells
sensitized triplet-triplet annihilation
Subjects
Details
- ISSN :
- 19448252
- Volume :
- 13
- Issue :
- 36
- Database :
- OpenAIRE
- Journal :
- ACS applied materialsinterfaces
- Accession number :
- edsair.doi.dedup.....d58207bef5c37cd2064dcebaa56d7725