Haughey, A.-M., Guilhabert, B., Kanibolotsky, A.L., Skabara, P.J. , Burley, G.A., Dawson, M.D. and Laurand, N. (2013) An organic semiconductor laser based on star-shaped truxene-core oligomers for refractive index sensing. Sensors and Actuators B: Chemical, 185, pp. 132-139. (doi: 10.1016/j.snb.2013.04.026)
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Abstract
The sensing capabilities of an all-organic semiconductor distributed feedback laser based on star-shaped truxene-core molecules are described. Two assays are presented as a proof-of-principle demonstration. In the first, concentration changes in the range of 5–60% (v/v) glycerol solution in water were measured with a bulk detection sensitivity of 21 nm per refractive index unit. Secondly, layer-by-layer adsorption of polyelectrolytes to the laser surface, up to a thickness of ≈45 nm, was measured. The experimental results from both assays are compared to, and shown to agree with, a theoretical model. Organic semiconductor lasers of this type have a number of attractions including ease of large-scale fabrication, incorporation into existing assay equipment and no rigid optical alignment constraints for excitation and collection of emission, which makes them well-suited to sensing applications. Therefore, it is expected that this technology will be useful in biosensing applications where label-free samples are investigated.
Item Type: | Articles |
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Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Skabara, Professor Peter |
Authors: | Haughey, A.-M., Guilhabert, B., Kanibolotsky, A.L., Skabara, P.J., Burley, G.A., Dawson, M.D., and Laurand, N. |
College/School: | College of Science and Engineering > School of Chemistry |
Journal Name: | Sensors and Actuators B: Chemical |
Publisher: | Elsevier |
ISSN: | 0925-4005 |
ISSN (Online): | 1873-3077 |
Published Online: | 17 April 2013 |
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