title: Molecular logic operations based on surfactant nanoaggregates.
abstract: Two molecular logic gates, FS1 and FS2, which display a UV and fluorescence behavior that is dependent on the pH value and the sodium dodecyl sulfate (SDS) surfactant concentration, are demonstrated based on the intramolecular charge-transfer mechanism. They are constructed according to the inorganic salts that induce transformation from premicelle to micelle. The absorption band of FS1 at 480 nm is significantly enhanced only when both SDS and Na(2)SO(4) are the input at high concentrations, in accordance with an AND logic gate. The OR logic function can be realized in a 3.5 mM SDS/FS2 aqueous solution with SDS and Na(2)SO(4) as inputs along with the emission intensity as output. Furthermore, half addition and half subtraction can be incorporated in FS1. This is facilitated by the surfactant, due to its versatility.
authors.affiliation: State Key Laboratory of Bioreactor Engineering and Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai 200237, China.
authors.forename: Junhong
authors.initials: J
authors.lastname: Qian
authors.forename: Yufang
authors.initials: Y
authors.lastname: Xu
authors.forename: Xuhong
authors.initials: X
authors.lastname: Qian
authors.forename: Shenyi
authors.initials: S
authors.lastname: Zhang
mesh_terms: D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D049329:Nanostructures / Q000737:chemistry*; D010777:Photochemistry; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D013053:Spectrophotometry; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D013501:Surface-Active Agents; D012967:Sodium Dodecyl Sulfate