Abstract:For the first time, using scanning probe microscopy, the supramolecular structures of terbium porphyrin double-decker complexes were observed on single-walled carbon nanotubes surfaces, where the molecules formed a well-ordered self-assembled array.
“…3 . This blue shift is possibly due to the non-covalent interaction (i.e., π–π stacking) between C12P and rGO, which agrees with the reported results 32 , 49 – 52 . Figure 3 UV–Visible spectrum (measured in CHCl 3 ) of raw rGO, porphyrin, and rGO-P nanocomposite.…”
This study presents the synthesis and doping of reduced graphene oxide (rGO) with synthesized porphyrin (5,15-bisdodecyl porphyrin, C12P) nanoparticles to fabricate reduced graphene oxide-porphyrin (rGO-P) nanocomposite as well as demonstrates their outstanding removal activity of azo dye and antimicrobial potential. The synthesized porphyrin, rGO, and rGO-P nanocomposites were characterised using SEM, HRTEM, Raman spectroscopy, XRD, 1H-NMR, mass spectrometry, and UV–Visible spectroscopy. The ability of the synthesized rGO-P nanocomposite was then investigated (as catalyst and/or adsorbent) to impact its removal efficacy against Congo red (CR) as a well-known toxic, mutagenic and carcinogenic synthetic dye. The findings indicated that 0.01 g of rGO-P nanocomposite achieved 78.0% removal of CR at pH 3.0. Besides, the removal efficacy was evaluated while studying many aspects i.e. pH, CR initial concentration, and rGO-P nanocomposite amount. Moreover, the minimum inhibitory concentration (MIC) and zone of inhibition (ZOI) of antimicrobial activity against pathogenic bacteria and yeast were evaluated. The antimicrobial results showed that rGO-P nanocomposite revealed the greatest antimicrobial activity against Candida albicans, Enterococcus faecalis, and Staphylococcus aureus with ZOI values of 24.3, 21.8, and 22.1 mm, respectively. Consequently, it demonstrates the substantial potential of rGO-P nanocomposite in the effective removal of pollutant dyes as well as significant antibacterial and antifungal properties.
“…3 . This blue shift is possibly due to the non-covalent interaction (i.e., π–π stacking) between C12P and rGO, which agrees with the reported results 32 , 49 – 52 . Figure 3 UV–Visible spectrum (measured in CHCl 3 ) of raw rGO, porphyrin, and rGO-P nanocomposite.…”
This study presents the synthesis and doping of reduced graphene oxide (rGO) with synthesized porphyrin (5,15-bisdodecyl porphyrin, C12P) nanoparticles to fabricate reduced graphene oxide-porphyrin (rGO-P) nanocomposite as well as demonstrates their outstanding removal activity of azo dye and antimicrobial potential. The synthesized porphyrin, rGO, and rGO-P nanocomposites were characterised using SEM, HRTEM, Raman spectroscopy, XRD, 1H-NMR, mass spectrometry, and UV–Visible spectroscopy. The ability of the synthesized rGO-P nanocomposite was then investigated (as catalyst and/or adsorbent) to impact its removal efficacy against Congo red (CR) as a well-known toxic, mutagenic and carcinogenic synthetic dye. The findings indicated that 0.01 g of rGO-P nanocomposite achieved 78.0% removal of CR at pH 3.0. Besides, the removal efficacy was evaluated while studying many aspects i.e. pH, CR initial concentration, and rGO-P nanocomposite amount. Moreover, the minimum inhibitory concentration (MIC) and zone of inhibition (ZOI) of antimicrobial activity against pathogenic bacteria and yeast were evaluated. The antimicrobial results showed that rGO-P nanocomposite revealed the greatest antimicrobial activity against Candida albicans, Enterococcus faecalis, and Staphylococcus aureus with ZOI values of 24.3, 21.8, and 22.1 mm, respectively. Consequently, it demonstrates the substantial potential of rGO-P nanocomposite in the effective removal of pollutant dyes as well as significant antibacterial and antifungal properties.
“…In 2019, Abd El-Mageed et al reported a supramolecular structure formed by a Tb(BDP) 2 –SWCNT hybrid material, in which Tb 3+ -5,15-bisdodecylporphyrin (BDP) double-decker SMMs were attached to the outside of an SWCNT. 423 Scanning tunneling microscopy (STM) confirmed an ordered, self-organized spiral array on the SWCNT surface stabilized by non-sharing (π-stacking) interactions. In addition, atomic force microscopy (AFM) images exhibited a distinctive debundling effect due to the adsorption of the SMMs on the SWCNT surface with some helical array structures.…”
Section: Development Of the Functionalities Of Sandwich Tetrapyrrole ...mentioning
This review summarises advances in chemistry of tetrapyrrole sandwiches with rare earth elements and highlights the current state of their use in single-molecule magnetism, organic field-effect transistors, conducting materials and nonlinear optics.
“…Prominent members of the SMM family are bisphthalocyanine complexes of lanthanides (Ln) in their radical form, of general formula [Ln 3+ (Pc 2− )(Pc •-)] (hereafter called LnPc 2 for simplicity; where Pc is phthalocyanine ligand) [1][2][3][4][5][6][7][8][9]; Other common synonyms are lanthanide diphthalocyanines and double-decker lanthanide phthalocyanines. In these molecules, the Ln ion is sandwiched between two Pc ligands, with face-to-face stacking interaction, forming a structure with (ideally) D 4h or D 4d symmetry, where in principle two extreme conformations can be observed: a more common one with the two Pc macrocycles rotated by a 'skew' angle of 45 • with respect to each other, called 'staggered' conformation (D 4d symmetry).…”
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