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Highly Ordered 2D‐Assemblies of Phase‐Segregated Block Molecules for Upconverted Linearly Polarized Emission by Martin H. C. Son; Anton M. Berghuis; Fabian Eisenreich; Bas Waal; Ghislaine Vantomme; Jaime Gómez Rivas; E. W. Meijer is a Engineering article available to read on EtoBox.
What is Highly Ordered 2D‐Assemblies of Phase‐Segregated Block Molecules for Upconverted Linearly Polarized Emission about?
Materials based on the laminar ordering of self-assembled molecules have a unique potential for applications requiring efficient energy migration through densely packed chromophores. Here, employing molecular assemblies of coil-rod-coil block molecules for triplet-triplet annihilation upconversion (TTA-UC) based on triplet energy migration with linearly polarized emission is reported. By covalently attaching discrete-length oligodimethylsiloxane (oDMS) to 9,10-diphenylanthracene (DPA), highly ordered 2D crystalline DPA sheets separated by oDMS layers are obtained. Transparent films of this material doped with small amounts of triplet sensitizer Pt octaethylporphyrin show air-stable TTA-UC under non-coherent excitation. Upon annealing, an increase in TTA-UC up to two orders of magnitude is observed originating from both an improved molecular ordering of DPA and an increased dispersion of the sensitizer. The molecular alignment in millimeter-sized domains leads to upconverted linearly polarized emission without alignment layers. By using a novel technique, upconversion imaging microscopy, the TTA-UC intensity is spatially resolved on a micrometer scale to visually demonstrate the imp
Who reads Highly Ordered 2D‐Assemblies of Phase‐Segregated Block Molecules for Upconverted Linearly Polarized Emission?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Martin H. C. Son; Anton M. Berghuis; Fabian Eisenreich; Bas Waal; Ghislaine Vantomme; Jaime Gómez Rivas; E. W. Meijer
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Wiley-Blackwell; Wiley; Research Square (ISSN 0935-9648)
- Published
- 2020
- Language
- EN
- Field
- Engineering (Physical Sciences)