共轭体系
香豆素
荧光
对偶(语法数字)
链条(单位)
聚合物
方位(导航)
单位(环理论)
光化学
化学
材料科学
高分子化学
有机化学
计算机科学
光学
人工智能
物理
数学
艺术
数学教育
文学类
天文
作者
Yuya Kaneko,Aohan Wang
摘要
Abstract A series of novel π‐conjugated polymers bearing alternating coumarin and phenylene units in the main chain backbone was synthesized via Sonogashira coupling reaction. The red‐shifts in the absorption maxima of the polymers indicate the expansion of π‐conjugated system in the polymer main chains. These polymers exhibited strong green fluorescence in organic solvents. Clearly perceptible dual‐color halochromic fluorescence was confirmed for the polymers by the significantly reversible changes of emission color from green to blue during alkalization and acidification processes. The lactone ring opening and closing property in the coumarin molecule functioned as a controllable switch, broadening the applications of the coumarin‐based π‐conjugated polymers as acid–base responsive fluorescence materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI