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Mechanoluminescence Color Conversion by Spontaneous Fluorescent-Dye-Diffusion in Elastomeric Zinc Sulfide Composite

Title
Mechanoluminescence Color Conversion by Spontaneous Fluorescent-Dye-Diffusion in Elastomeric Zinc Sulfide Composite
Authors
Jeong, SM[Jeong, Soon Moon]Song, S[Song, Seongkyu]Kim, H[Kim, Hyunmin]Joo, KI[Joo, Kyung-Il]Takezoe, H[Takezoe, Hideo]
DGIST Authors
Jeong, SM[Jeong, Soon Moon]; Song, S[Song, Seongkyu]; Kim, H[Kim, Hyunmin]; Joo, KI[Joo, Kyung-Il]
Issue Date
2016-07-19
Citation
Advanced Functional Materials, 26(27), 4848-4858
Type
Article
Article Type
Article
Keywords
ColorColor ConversionsColorful DisplaysDicyanomethyleneDiffusionDyeDye LasersDyeingElectroluminescenceFluorescenceFluorescent DyesLightLightingMechanoluminescenceRed LuminescenceShort WavelengthsSiliconesSolid State LasersSolid State LightingTriboluminescenceTuningZincZinc SulfideZinc Sulfide (ZnS)
ISSN
1616-301X
Abstract
Color conversion, long-wavelength light emission by absorbing short-wavelength light, is an attractive approach for developing a broad-color expression technology and is widely used in solid-state lighting, dye-lasers, and colorful displays. Up to now, many papers have been published reporting various mechanoluminescent materials emitting color of ultraviolet, blue, green, orange, and red. However, the strategies of previous reports have focused on color-tuning of mechanoluminescent material itself through newly developing inorganic mechanoluminescent compounds. Here, a new strategy for the color manipulation of mechanoluminescence (ML) is introduced by physically combining fluorescent dyes with existing mechanoluminescent materials. An elastomeric zinc sulfide (ZnS) composite is prepared in a polydimethylsiloxane framework with spontaneously diffused 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB), and red luminescence by complete color conversion via DCJTB is demonstrated, which fully absorbed green ML from ZnS. Based on this approach, color-tuning of ML from red to green is successfully achieved and color expression range is expanded by employing electroluminescence (EL). Various-color-emitting EL/ML electromechanical display is demonstrated using color discrepancy between DCJTB employed EL and ML. As the implementation is fairly straightforward, it is believed that present color conversion is a viable and common method to manipulate broader color expression for future ML applications. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI
http://hdl.handle.net/20.500.11750/2236
DOI
10.1002/adfm.201601461
Publisher
Wiley-VCH Verlag
Files:
There are no files associated with this item.
Collection:
Division of Nano∙Energy Convergence Research1. Journal Articles


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