蛍光レシオ型Force Probeの開発と高分子物理への展開

抄録

A comprehensive understanding of the transmission of nanoscale forces in the pico-to-nanonewton range is essential in the field of polymer physics. While physical approaches have limitations in analyzing the local force distribution in condensed environments, chemical analysis using probes represents a promising avenue. In this topic, we will outline recent advances in the development of ratiometric fluorescent force probes and newly obtained insights into polymer physics. After an overview of the photophysical properties of the force probes, the following studies will be presented: 1) quantitative evaluation of local stress concentration in crosslinked polyurethane elastomer, 2) development of a force probe that works in polymer gels, and 3) simultaneous monitoring of polymer chain stretching and subsequent strain-induced crystallization. The combinational use of the dual-emissive force probe and the ratiometric fluorescence imaging is a universal approach for the development of soft matter physics.