SENSOR COMPOUNDS AND ASSOCIATED METHODS AND DEVICES
申请人:UNIVERSITY OF UTAH RESEARCH FOUNDATION
公开号:US20180201612A1
公开(公告)日:2018-07-19
Methods of detecting a non-explosive analyte can include exposing a sensor compound to a non-explosive analyte and displaying a change in the sensor compound upon exposure of the sensor compound to the non-explosive analyte. A variety of sensor compounds for detecting a target analyte, including both explosive and non-explosive analytes, is also described. Sensor devices for detecting a target analyte can include a substrate and a sensor compound positioned on the substrate in a plurality of detection zones.
Well-defined ultrathin nanoribbons have been fabricated from an amphiphilic electron donor acceptor (D-A) supramolecule comprising perylene tetracarboxylic diimide as the backbone scaffold to enforce the one-dimensional intermolecular assembly via strong a-stacking. These nanoribbons demonstrated high photoconductivity upon illumination with white light. The high photoconductivity thus obtained is likely due to the optimal molecular design that enables a good kinetic balance between the two competitive processes, the intramolecular charge recombination (between D and A) and the intermolecular charge transport along the nanoribbon. The photoconduction response has also proven to be prompt and reproducible with the light turning on and off. The photogenerated electrons within the nanoribbon can be efficiently trapped by the adsorbed oxygen molecules or other oxidizing species, leading to depletion of the charge carriers (and thus the electrical conductivity) of the nanoribbon, as typically observed for n-type semiconductor materials as applied in chemiresistors. Combination of this sensitive modulation of conductivity with the unique features intrinsic to the nanoribbon morphology (large surface area and continuous nanoporosity when deposited on a substrate to form a fibril film) enables efficient vapor sensing of nitro-based explosives.
[EN] PHOTOCONDUCTIVE SENSOR MATERIALS FOR DETECTION OF EXPLOSIVE VAPOR<br/>[FR] MATÉRIAUX PHOTOCONDUCTEURS DE CAPTEURS UTILISÉS DANS LA DÉTECTION DE VAPEUR EXPLOSIVE
申请人:UNIV UTAH
公开号:WO2011079296A3
公开(公告)日:2011-12-01
[EN] SENSOR COMPOUNDS AND ASSOCIATED METHODS AND DEVICES<br/>[FR] COMPOSÉS DE DÉTECTION ET PROCÉDÉS ET DISPOSITIFS ASSOCIÉS
申请人:UNIV UTAH RES FOUND
公开号:WO2017008074A1
公开(公告)日:2017-01-12
Methods of detecting a non-explosive analyte can include exposing a sensor compound to a non-explosive analyte and displaying a change in the sensor compound upon exposure of the sensor compound to the non-explosive analyte. A variety of sensor compounds for detecting a target analyte, including both explosive and non-explosive analytes, is also described. Sensor devices for detecting a target analyte can include a substrate and a sensor compound positioned on the substrate in a plurality of detection zones.