title: Logical regulations of the aggregation/dispersion of gold nanoparticles via programmed chemical interactions.
abstract: Nanoparticles that respond to various chemical and physical stimuli form the basis for various conceivable applications including sensors, chemical logic, biomedical imaging, and therapies. In this work, we demonstrate that the electrostatic and chemical (complexing and gold-thiol bonding) interactions existing in a gold nanoparticle/Zn(2+)/dithiothreitol-based ternary chemical system is "programmable" and can be utilized to regulate the aggregation and dispersion of nanoparticles via XOR and INHIBIT logics. The resulting solutions alter their colors according to different input combinations because of the well-controlled aggregation or dispersion of plasmonic gold nanoparticles, opening up new possibilities for the developments of advanced sensors and nanobiomedical devices based on the coupling, gating, and signaling of different chemical stimuli.
authors.affiliation: CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Yulin
authors.initials: Y
authors.lastname: Li
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Han
authors.forename: Zhaoxiang
authors.initials: Z
authors.lastname: Deng
mesh_terms: D004229:Dithiothreitol / Q000737:chemistry; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008956:Models, Chemical; D036103:Nanotechnology
chemical_list: D006046:Gold; D004229:Dithiothreitol