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We present a truxene-based distributed feedback laser sensor and demonstrate its sensing capabilities. Results for bulk refractive index sensing, detection of nano-layer adsorption at the laser surface and specific biomolecule sensing are shown.
We report the fabrication and characterization of a mechanically flexible 4 4 array of organic semiconductor lasers using blue-emitting tris(trifluorene)truxene oligomers as the gain medium. The device was fabricated entirely by soft lithography from the reproduction of a 1-D silica master grating. The grating array pattern was created directly on the master by a polymeric mask. Each element,...
Tunable random laser emission over a 7-nm waveband is demonstrated using a green-emitting π-conjugated polymer infiltrated into a photonic glass formed by micron- and submicron-size monodisperse silica spheres. Corresponding scattering cross-section, scattering length and transport mean free paths are calculated using the Mie scattering theory and, along with experimental results, indicate that this...
Mechanically flexible deep-blue emitting organic semiconductor distributed feedback (DFB) lasers have been fabricated by a low-cost approach using soft lithography from a holographic grating. The devices are operated in ambient atmosphere above a 14.4 μJ/cm2 threshold.
Star-shaped oligofluorene consists of highly-fluorescent macromolecules of considerable interest for organic electronics. Here, we demonstrate controlled micro-patterning of these organic nanostructured molecules by blending them with custom-synthesized photo-curable aliphatic polymer matrices to facilitate solventless inkjet printing. The printed microstructures are spherical with minimum dimensions...
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