Multiply Configurable Optical-Logic Systems Based on Cationic Conjugated Polymer/DNA Assemblies


  • The authors are grateful to the “100 Talents” program of the Chinese Academy of Sciences, the National Natural Science Foundation of China (Nos. 20421101 and 20574073), the Institute for Collaborative Technologies, and the NSF (DMR-0097611) for financial support.


original image

Information processing by integrated logic gates capable of YES, NOT, AND, NAND, INH, and INHIBIT operations can be simulated using fluorescence resonance energy transfer (FRET) in cationic conjugated polymer/DNA/ ethidium bromide (EB) intercalating-dye assemblies. Additionally, a reversible XNOR logic gate can be designed and implemented with these materials. The figure shows the scheme for the INHIBIT logic gate.