Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware

doi:10.3390/s110707055

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Sensors 2011, 11(7), 7055-7062; doi:10.3390/s110707055

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Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware

John Canning^1,2,* , Angelica Lau^1,2, Masood Naqshbandi^1,2, Ingemar Petermann^1,2 and Maxwell J. Crossley²

¹ Interdisciplinary Photonic Laboratories (iPL), School of Chemistry, The University of Sydney, NSW 2006, Australia ² School of Chemistry, The University of Sydney, NSW 2006, Australia

* Author to whom correspondence should be addressed.

Received: 18 May 2011; in revised form: 17 June 2011 / Accepted: 21 June 2011 / Published: 6 July 2011

(This article belongs to the Section Physical Sensors)

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Abstract: The blue OLED emission from a mobile phone was characterised, revealing a sharp emission band centred at λ = 445 nm with a 3dB bandwidth Δλ ~ 20 nm. It was used to excite Rhodamine 123 doped within a “giant” mesostructured silica sphere during fabrication through evaporative self-assembly of silica nanoparticles. Fluorescence was able to be detected using a standard optical microscope fitted with a green transmission pass filter and cooled CCD and with 1 ms exposure time demonstrating the potential of mobile platforms as the basis for portable diagnostics in the field.

Keywords: biological sensing and sensors; optical diagnostics for medicine; fluorescence; optoelectronics; light-emitting diodes; fluorescence microscopy; nanomaterials; silica; optical instruments; smartphones; mobile platforms

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MDPI and ACS Style

Canning, J.; Lau, A.; Naqshbandi, M.; Petermann, I.; Crossley, M.J. Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware. Sensors 2011, 11, 7055-7062.

AMA Style

Canning J, Lau A, Naqshbandi M, Petermann I, Crossley MJ. Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware. Sensors. 2011; 11(7):7055-7062.

Chicago/Turabian Style

Canning, John; Lau, Angelica; Naqshbandi, Masood; Petermann, Ingemar; Crossley, Maxwell J. 2011. "Measurement of Fluorescence in a Rhodamine-123 Doped Self-Assembled “Giant” Mesostructured Silica Sphere Using a Smartphone as Optical Hardware." Sensors 11, no. 7: 7055-7062.

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