Colorimetric logic gates through molecular recognition and plasmonic nanoparticles

Yunlei Xianyu; Zhuo Wang; Jiashu Sun; Xuefei Wang; Xingyu Jiang

doi:10.1002/smll.201400479

Colorimetric logic gates through molecular recognition and plasmonic nanoparticles

Small. 2014 Dec 10;10(23):4833-8. doi: 10.1002/smll.201400479. Epub 2014 Sep 5.

Authors

Yunlei Xianyu¹, Zhuo Wang, Jiashu Sun, Xuefei Wang, Xingyu Jiang

Affiliation

¹ Beijing Engineering Research Center for BioNanotechnology & Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, Beijing, 100190, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China.

PMID: 25196388
DOI: 10.1002/smll.201400479

Abstract

A colorimetric logic system capable of AND, OR, INHIBIT and AND + OR logic operations is constructed. The principle is modulation of the distance between arginine (lysine)-modified gold nanoparticles via metal ions. A lab-on-chip format for the assembly of versatile logic gates is demonstrated as a proof of concept. These logic gates allow a straightforward readout by the naked eye.

Keywords: amino-acid; colorimetry; gold nanoparticles; logic gates; microfluidics.

Publication types

Research Support, Non-U.S. Gov't