Synthesis and Fluorescence Properties of Chiral Near‐Infrared Emissive Polymers Incorporating BODIPY Derivatives and (S)‐Binaphthyl

Abstract

AbstractA new series of π‐conjugated chiroptical polymers consisting of styryl BODIPYs moieties and (S)‐binaphthyl units has been firstly synthesized via Sonogashira polymerization. The resulting polymers were characterized by 1H NMR spectroscopy, gel permeation chromatography (GPC), UV–Vis absorption spectroscopy, cyclic voltammetry (CV), circular dichroism (CD), and density functional theory (DFT) calculations. The chiral polymers have moderate molecular weights, high solubility in commonly solvents and stable chiroptical conformation. And more importantly, the four chiral polymers can exhibit near‐infrared (NIR) emissive and good anisotropic fluorescence. We anticipate these chiral NIR polymers will be useful in biological measurements and cellular imaging where NIR emission is beneficial.