Energy down converting organic fluorophore functionalized mesoporous silica hybrids for monolith-coated light emitting diodes.

ABSTRACT: The covalent attachment of organic fluorophores in mesoporous silica matrices for usage as energy down converting phosphors without employing inorganic transition or rare earth metals is reported in this article. Triethoxysilylpropyl-substituted derivatives of the blue emitting perylene, green emitting benzofurazane, and red emitting Nile red were synthesized and applied in the synthesis of mesoporous hybrid materials by postsynthetic grafting to commercially available MCM-41. These individually dye-functionalized hybrid materials are mixed in variable ratios to furnish a powder capable of emitting white light with CIE chromaticity coordinates of x = 0.33, y = 0.33 and an external quantum yield of 4.6% upon irradiation at 410 nm. Furthermore, as a proof of concept two different device setu

SUBMITTER: Borgardts M 

PROVIDER: S-EPMC5433209 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature