Multi C–C/ C–N Coupled Light‐Emitting Aliphatic Terpolymers: N–H Functionalized Fluorophore‐Monomers and High‐Performance Applications

摘要： For circumventing the costly fluorescent labelling, nonconventional multifunctional intrinsically fluorescent aliphatic-terpolymers, i.e., 1, 2, 3, 4, and 5, were synthesized via C–C/ C–N coupled in situ protrusions of fluorophore-monomers in solution polymerization of two non-emissive monomers. These scalable terpolymers were suitable for sensing and high-performance exclusion of Cu(II), logic-function, and bioimaging. The structures of terpolymers, fluorescent monomers, aggregation-induced enhanced emissions, bioimaging abilities, and the superadsorption were understood using 1H/ 13C NMR, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, ultraviolet-visible spectroscopy, atomic absorption spectroscopy, thermogravimetric analysis, high-resolution transmission electron microscopy, dynamic light scattering, electron paramagnetic resonance spectroscopy, solid-state fluorescence, fluorescence imaging, and fluorescence lifetime, along with isotherms, kinetics, and thermodynamic studies. The geometries and electronic structures of fluorophores and absorption-emission properties of terpolymers were examined using density functional theory, time-dependent DFT, and natural transition orbital analyses. For 1, 2, and 5, the limit of detection values were 1.03 × 10?7, 1.65 × 10?7, and 1.77 × 10?7 M, respectively. The maximum adsorption capacities were 1575.21, 1433.70, and 1472.21 mg g?1 for 1, 2, and 5, respectively.