Detection of TNT and Picric Acid on Surfaces and in Seawater by Using Photoluminescent Polysiloles This work was supported through DARPA's Tactical Sensors Program through a Space and Naval Warfare Systems Center Contract (N66001-98-C-8514) and the National Science Foundation, Division of Material Research (Grant No. DMR 9900034). The technical point of contact for this DARPA program is Dr. Edward Carapezza.