Room temperature aqueous phase synthesis and characterization of novel nano-sized coordination polymers composed of copper(II), nickel(II), and zinc(II) metal ions with p-phenylenediamine (PPD) as the bridging ligand

Abstract

Green chemistry approaches for the synthesis of metallic nanoparticles have become a new and promising field of research in recent years. Synthesis of metal nanoparticles [like gold (Au), silver (Ag), lead (Pb), platinum (Pt), copper (Cu), iron (Fe), cadmium (Cd), and other metal oxides such as titanium oxide (TiO), zinc oxide (ZnO), etc.] by various chemical and physical approaches as well as the biological approaches mediated by number of microorganisms have been actively found. Plant-mediated synthesis approaches are found to be more reliable and economic route to synthesize these metal nanoparticles. Owing to the biodiversity of plant biomasses, the actual mechanism by which the plant constituents have contributed to the synthetic process is yet to be fully known. Although the feasibility of controlling, the size and shape of nanoparticles by variation in reaction conditions have been demonstrated in many studies. Conventionally, nanoparticles are synthesized by chemicals and physicochemical methods using several chemicals which later on become accountable for various risk due to their general toxicity, so that solving the objective biological approaches is coming up to fill these gaps. The plant-mediated synthesis process undergoes highly controlled approaches for making them suitable for metal nanoparticle synthesis. In addition, biological synthesis of metallic nanoparticles is inexpensive, one-step, and eco-friendly method. In addition, the plant-mediated nanoparticles are used as potential pharmaceutical agents for various diseases such as malaria, HIV, cancer, hepatitis, and other diseases. Including this some other relevant information regarding nanopharmaceutical products, companies that are involve in the manufacturing and commercialization process and their clinical trial status are also discussed. This review article gives an overview of the plant-mediated synthesis of metal nanoparticles, possible compounds, and mechanisms that might be responsible for the reduction process as well as the potential pharmacological applications, currently available nanopharmaceutical products and their marketing status.

Dual-Emissive Carbon Dots: Exploring Their Fluorescence Properties for Sensitive Turn-Off–On Recognition of Ferric and Pyrophosphate Ions and Its Application in Fluorometric Detection of the Loop-Mediated Isothermal Amplification Reaction

“…The sharp peak observed at 1626 cm –1 can be assigned to the N–H bending mode of the NH 2 group. The bands located at 1258, 3015, and 1513 cm –1 are due to the C–N, C–H, and CC aromatic vibrations, respectively. ,− …”

Development of Fluorescent Carbon Nanoparticle-Based Probes for Intracellular pH and Hypochlorite Sensing

“…The spectral features of mPA CNPs are comparatively more apparent than those of m-PD CDs, further confirming the greater retention of pyrolytic m-PD/AA polymers. For the FT-IR spectra of mPA CNPs and m-PD CDs depicted in Figure S3, the peaks observed at 3408 and 3313 cm −1 , the broad band around 3212 cm −1 , and the peak at 3035 cm −1 were attributed to the stretching vibrations of N-H, O-H, and aromatic C-H, respectively [45]. The intense signal centered at around 1632 cm −1 conveyed signals from quinoid imine stretching, -C=C-ring stretching and -NH 2 bending, and the peaks registered at 1500 and 1334 cm −1 were separately assigned to the C=C and C-N stretching vibrations of benzenoid amine [46,47].…”

“…The N1s XPS peaks at 399, 399.9, and 401.1 eV were assigned to pyridinic N, amino N and the sum of graphitic N and protonated amino N, respectively[43,44]. The aliphatic-to-aromatic N ratio signal detected in mPA CNPs is stronger than m-PD CDs, indicating that there are abundant amino groups decorated on the surface/polymer chains.For the FT-IR spectra of mPA CNPs and m-PD CDs depicted in FigureS3, the peaks observed at 3408 and 3313 cm −1 , the broad band around 3212 cm −1 , and the peak at 3035 cm −1 were attributed to the stretching vibrations of N-H, O-H, and aromatic C-H, respectively[45]. The intense signal centered at around 1632 cm −1 conveyed signals from quinoid imine stretching, -C=C-ring stretching and -NH2 bending, and the peaks registered at 1500 and 1334 cm −1 were separately assigned to the C=C and C-N stretching vibrations of benzenoid amine[46,47].…”

Hemidirected Coordination Sphere on Novel Lead(II) Nano Coordination Polymer: Synthesis, Structural Characterization and DFT Calculation of [Pb(p-2-einh)ClO4(MeOH)2]n

“…Several different synthetic methods have been offered for the preparation of coordination polymers. Some of them are (a) slow diffusion of the reactants into a polymeric matrix, (b) diffusion from the gas phase, (c) evaporation of the solvent at ambient or reduced temperatures, (d) precipitation or recrystallization from a mixture of solvents, (e) temperature controlled cooling and (f) hydrothermal synthesis [19][20][21][22][23][24][25][26][27][28][29].…”