Amplified spontaneous emission in free-standing membranes incorporating star-shaped monodisperse π-conjugated truxene oligomers

作者：Guilhabert Benoit^*; Laurand Nicolas; Herrnsdorf Johannes; Chen Yujie; MacKintosh Allan R; Kanibolotsky Alexander L; Gu Erdan; Skabara Peter J; Pethrick R A; Dawson Martin D

来源：Journal of Optics, 2010, 12(3).

DOI：10.1088/2040-8978/12/3/035503

• Amplified spontaneous emissions
• Concentration of
• Free standing membranes
• Hydrophobic nature
• Monodisperse
• Optical amplifier
• Optical pulse
• Optically stimulated luminescence
• Organic semiconductor lasers
• Organics
• Photosensitive polymers
• Polymer based composite
• Soft-matter photonics
• Spin casting
• Truxene

A light-emitting photoresist comprising a vinyl-ether-based photosensitive polymer host doped with star-shaped π-conjugated truxene-core oligomers is shown to be a promising platform for the realization of soft-matter photonic devices. In particular, a simple process for the fabrication of free-standing membranes with no spin casting and peel-off steps is reported. The approach uses instead the hydrophobic nature of the nanocomposites. Membranes are fabricated, with a concentration of 20 mgml-1of the truxene oligomer denoted as T3, directly on deionized water by ultraviolet flood illumination. The resulting membrane is 94 μm thick on average with a diameter up to 50mm. Amplified spontaneous emission developing around 435nm above an ∼400 μJcm-2threshold is obtained by optical pulse pumping the sample at 355nm in an edge-emitting photoluminescence configuration. These membranes form a versatile platform for flexible organic semiconductor lasers and optical amplifiers.

• 出版日期2010
• 单位university of strathclyde