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Development and Evaluation of the Chromatic Behavior of an Intelligent Packaging Material Based on Cellulose Acetate Incorporated with Polydiacetylene for an Efficient Packaging
Open AccessCommunication

Smartphone and Paper-Based Fluorescence Reader: A Do It Yourself Approach

Biophotonic Nanosensors Laboratory, Centro de Investigaciones en Óptica A. C., León 37150, Mexico
Author to whom correspondence should be addressed.
Biosensors 2020, 10(6), 60;
Received: 18 May 2020 / Revised: 28 May 2020 / Accepted: 29 May 2020 / Published: 2 June 2020
(This article belongs to the Special Issue Cellulose-Based Biosensing Platforms)
Given their photoluminescent character, portable quantum dot readers are often sophisticated and relatively expensive. In response, we engineered a “do it yourself” fluorescence reader employing paper materials and a mid-range smartphone camera. Black paperboard facilitated a versatile, lightweight and foldable case; whereas cellophane paper was observed to behave as a simple, yet effective, optical bandpass filter leading to an advantageous device for the quantitative interrogation of quantum dot nanocrystals concentrations (from 2.5 to 20 nM), which are suitable for optical point-of-care biosensing. The streptavidin-coated nanocrystals employed are commercially available and the developed reader was benchmarked with a standard portable quantum dot reader, thereby demonstrating advantages in terms of cost and linear analytical range. View Full-Text
Keywords: biosensing; point-of-care; photoluminescence; portable devices; miniaturization biosensing; point-of-care; photoluminescence; portable devices; miniaturization
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Ireta-Muñoz, L.A.; Morales-Narváez, E. Smartphone and Paper-Based Fluorescence Reader: A Do It Yourself Approach. Biosensors 2020, 10, 60.

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