Projects per year
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.
Original language | English |
---|---|
Pages (from-to) | 132-139 |
Number of pages | 8 |
Journal | Sensors and Actuators B: Chemical |
Volume | 185 |
DOIs | |
Publication status | Published - Aug 2013 |
Keywords
- thin-films
- sensitivity
- polymers
- laser
- biosensors
- semiconductor
- plastic
- distributed-feedback
- neutron
- truxene
- sensor
- integrated optics
- organic
- organic semiconductor laser
- star-shaped truxene-core oligomers
- refractive index sensing
Fingerprint
Dive into the research topics of 'An organic semiconductor laser based on star-shaped truxene-core oligomers for refractive index sensing'. Together they form a unique fingerprint.Projects
- 3 Finished
-
Gallium nitride enabled hybrid and flexible photonics
Dawson, M., Calvez, S., Gu, E., Martin, R., Skabara, P. & Watson, I.
EPSRC (Engineering and Physical Sciences Research Council)
1/04/11 → 31/03/15
Project: Research
-
An EPSRC Life Sciences Interface Doctoral Training Centre for Medical Devices | Haughey, Anne-Marie
Dawson, M., Burley, G. & Haughey, A.
EPSRC (Engineering and Physical Sciences Research Council)
1/10/10 → 23/12/14
Project: Research Studentship - Internally Allocated