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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201702992
|2 doi
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|a pubmed24n0918.xml
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|a (DE-627)NLM275694283
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|a (NLM)28898468
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Vadrucci, Roberto
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Nanodroplet-Containing Polymers for Efficient Low-Power Light Upconversion
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1 |
|c 2017
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Sensitized triplet-triplet-annihilation-based photon upconversion (TTA-UC) permits the conversion of light into radiation of higher energy and involves a sequence of photophysical processes between two dyes. In contrast to other upconversion schemes, TTA-UC allows the frequency shifting of low-intensity light, which makes it particularly suitable for solar-energy harvesting technologies. High upconversion yields can be observed for low viscosity solutions of dyes; but, in solid materials, which are better suited for integration in devices, the process is usually less efficient. Here, it is shown that this problem can be solved by using transparent nanodroplet-containing polymers that consist of a continuous polymer matrix and a dispersed liquid phase containing the upconverting dyes. These materials can be accessed by a simple one-step procedure that involves the free-radical polymerization of a microemulsion of hydrophilic monomers, a lipophilic solvent, the upconverting dyes, and a surfactant. Several glassy and rubbery materials are explored and a range of dyes that enable TTA-UC in different spectral regions are utilized. The materials display upconversion efficiencies of up to ≈15%, approaching the performance of optimized oxygen-free reference solutions. The data suggest that the matrix not only serves as mechanically coherent carrier for the upconverting liquid phase, but also provides good protection from atmospheric oxygen
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4 |
|a Journal Article
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4 |
|a luminescence
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4 |
|a optically active materials
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4 |
|a polymeric materials
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4 |
|a self-assembly
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4 |
|a triplet-triplet annihilation upconversion
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| 700 |
1 |
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|a Monguzzi, Angelo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Saenz, Felipe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wilts, Bodo D
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Simon, Yoan C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Weder, Christoph
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 41 vom: 19. Nov.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:41
|g day:19
|g month:11
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|u http://dx.doi.org/10.1002/adma.201702992
|3 Volltext
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|a AR
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|d 29
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|e 41
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