Premium
Nonconjugated Biocompatible Macromolecular Luminogens for Sensing and Removals of Fe(III) and Cu(II): DFT Studies on Selective Coordination(s) and On‐Off Sensing
Author(s) -
Dutta Arnab,
Mahapatra Manas,
Deb Mousumi,
Ghosh Narendra Nath,
Chattopadhyay Pijush Kanti,
Singha Nayan Ranjan
Publication year - 2021
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.202000522
Subject(s) - monomer , methacrylate , x ray photoelectron spectroscopy , polymerization , polymer chemistry , dynamic light scattering , quenching (fluorescence) , thermogravimetric analysis , fourier transform infrared spectroscopy , chemistry , fluorescence , methacrylic acid , photochemistry , fluorescence spectroscopy , materials science , polymer , chemical engineering , organic chemistry , nanotechnology , nanoparticle , physics , quantum mechanics , engineering
This work reports the design and synthesis of two nonaromatic biocompatible macromolecular luminogens, i.e., 2‐(dimethylamino)ethyl methacrylate‐ co ‐2‐(dimethylamino)ethyl 3‐( N ‐(methylol)acrylamido)‐2‐methylpropanoate‐ co ‐ N ‐(methylol)acrylamide/DMAEMA‐ co ‐DMAENMAMP‐ co ‐NMA ( P1 ) and methacrylic acid‐ co ‐3‐( N ‐(methylol)acrylamido)‐2‐methylpropanoic acid‐ co ‐ N ‐(methylol)acrylamide/MEA‐ co ‐NMAMPA‐ co ‐NMA ( P2 ), prepared through in situ anchored acrylamido‐ester/DMAENMAMP and acrylamido‐acid/NMAMPA third comonomers, respectively, in a facile polymerization of two non‐luminous monomers in water medium to circumvent the drawbacks related to aggregation‐caused quenching of aromatic luminogens. The structures of P1 / P2 , in situ anchored comonomers, fluorophores, N ‐branching associated n–π* interactions, and hydrogen bonding assisted aggregation‐enhanced emissions are comprehended by nuclear magnetic resonance, Fourier transform infrared (FTIR), X‐ray photoelectron spectroscopy (XPS), ultraviolet‐visible, thermogravimetric analysis (TGA), dynamic light scattering (DLS), transmission electron microscopy (TEM), fluorescence lifetime, and fluorescence imaging. P1 and P2 are appropriate for sensitive detections/exclusions of Fe(III)/Cu(II) and cell‐imaging. The intrinsic fluorescence, on‐off sensing, selective coordinations of Fe(III) and Cu(II) with fluorophores, emission quenching mechanisms, and removals of Fe(III) and Cu(II) are investigated by DFT/NTO analyses of P1 / P2 and Fe(III)‐ P1 and Cu(II)‐ P2 complexes, XPS, and isotherms and kinetics parameters. The excellent biocompatibilities, comparable limit of detections, i.e., 1.70 × 10 −7 and 1.59 × 10 −7 [ m ], and higher adsorption capacities, i.e., 77.25 and 154.13 mg g −1 , at low ppm; 303 K; and pH = 7 compel P1 / P2 to be acceptable for multipurpose applications.