Stimuli-responsive Behaviors for Room-temperature Fluorescent Liquid Materials based on N-Heteroacenes and their Mixtures in Response to HCl Vapor and their Facile Synthesis

Anal Sci. 2021 Mar 10;37(3):469-473. doi: 10.2116/analsci.20SCP05. Epub 2020 Nov 6.

Abstract

In this paper, we report on stimuli-responsive behaviors for room temperature fluorescent liquid materials based on N-heteroacene frameworks in response to HCl vapor. These liquid materials as well as their mixtures prepared by varying the combination can provide various emission colors and stimuli-responsive properties in liquid states. Also, we achieved an improvement in total synthetic yield (>40%) by redesigning the molecular structures of liquid materials as compared to previous liquid materials (<10%).

Keywords: N-heteroacene; Stimuli-responsive liquid; acid sensing; disorder-order transition; security ink.