Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 273, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2021.115396
Keywords
Co-oligomers; Pyrrole; Luminol; Optoelectronic properties; Optimised geometries; Theoretical band gap
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This study synthesized co-oligomers of pyrrole with luminol for the first time using chemical polymerization technique. Various analyses and calculations were conducted to explore the properties of the co-oligomers, offering new possibilities for designing bioimaging agents.
The present study reports for the first time, synthesis of co-oligomers of pyrrole with luminol via chemical polymerization technique. Co-oligomerization was investigated by H-1 NMR, FTIR spectroscopic studies showed that oligomerization occurred after the monomer feed ratio which formed blocks, the later carrying the same monomer ratio as the feed ratio. By applying DFT method, optimized geometries of the oligomers and co-oligomers, distribution of HOMO and LUMO orbitals, Mulliken charge were computed. The same theory with the above basis set was used to compute Fukui's indices: f(+), f(-) and fo to find out nucleophilic, electrophilic, and free radical points of attack on luminol and pyrrole monomers as well as dimers. Thermal degradation of co-oligomers was explored by TGA/DTG methods which revealed prominent degradation peak of luminol moiety. Since the co-oligomer is unexplored, modification of the molecular structure as well as opto-electronic properties could be attempted for designing bioimaging agents.
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