Next Article in Journal
An Adaptive Fault-Tolerant Event Detection Scheme for Wireless Sensor Networks
Next Article in Special Issue
Near-Infrared Fluorescence Detection of Acetylcholine in Aqueous Solution Using a Complex of Rhodamine 800 and p-Sulfonato-calix[8]arene
Previous Article in Journal
Decentralized Sensor Fusion for Ubiquitous Networking Robotics in Urban Areas
Previous Article in Special Issue
Reduced Fluoresceinamine as a Fluorescent Sensor for Nitric Oxide
Article Menu

Export Article

Open AccessArticle
Sensors 2010, 10(3), 2315-2331;

Fluorescent Silicate Materials for the Detection of Paraoxon

Center for Bio/Molecular Science and Engineering, Naval Research Laboratory, Washington, DC 20375, USA
NOVA Research Incorporated, Alexandria, VA 22308, USA
Author to whom correspondence should be addressed.
Received: 4 January 2010 / Revised: 2 March 2010 / Accepted: 8 March 2010 / Published: 19 March 2010
(This article belongs to the Special Issue Fluorescent Chemosensors)
Full-Text   |   PDF [343 KB, uploaded 21 June 2014]   |  


Porphyrins are a family of highly conjugated molecules that strongly absorb visible light and fluoresce intensely. These molecules are sensitive to changes in their immediate environment and have been widely described for optical detection applications. Surfactant-templated organosilicate materials have been described for the semi-selective adsorption of small molecule contaminants. These structures offer high surface areas and large pore volumes within an organized framework. The organic bridging groups in the materials can be altered to provide varied binding characteristics. This effort seeks to utilize the tunable binding selectivity, high surface area, and low materials density of these highly ordered pore networks and to combine them with the unique spectrophotometric properties of porphyrins. In the porphyrin-embedded materials (PEMs), the organosilicate scaffold stabilizes the porphyrin and facilitates optimal orientation of porphyrin and target. The materials can be stored under ambient conditions and offer exceptional shelf-life. Here, we report on the design of PEMs with specificity for organophosphates and compounds of similar structure. View Full-Text
Keywords: mesoporous; organosilica; fluorescence; porphyrin; hierarchical; detection; organophosphate mesoporous; organosilica; fluorescence; porphyrin; hierarchical; detection; organophosphate

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Johnson, B.J.; Melde, B.J.; Thomas, C.; Malanoski, A.P.; Leska, I.A.; Charles, P.T.; Parrish, D.A.; Deschamps, J.R. Fluorescent Silicate Materials for the Detection of Paraoxon. Sensors 2010, 10, 2315-2331.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top