Construction of multiple logic gates based on anthocyanin derivative

Abstract

An optically active anthocyanin compound containing hydroxyl functionality was designed, synthesized and characterized. A change in optical absorption is observed on addition of excess Fluoride, H+ or OH− in methanol. Deprotonation of hydroxyl groups of quinonoidal form of anthocyanin derivative (AC) occurs after addition of excess fluoride ion. From optical absorption spectra it is revealed that flavylium cation of anthocyanin derivative (ACH+) is formed either on addition of H+ in AC or in deprotonated species generated by fluoride ion. We demonstrated multiple logic operations using different ionic inputs as H+, Fe2+, OH− and F−.