Synthesis, characterization, catalytic and splinting activity of nano Ag end capped <scp>l</scp>‐glutathione bridged amphiphilic diblock copolymer

A novel Ni complexed aminoclay (AC) catalyst was prepared by complexation method followed by reduction reaction. Various analytical techniques such as FTIR spectroscopy, UV-visible spectroscopy, DSC, TGA, SEM, HRTEM, EDX, XPS and WCA measurement are used to characterize the synthesized material. The AC-Ni catalyst system exhibited improved thermal stability and fiber-like morphology. The XPS results declared the formation of Ni nanoparticles. Thus, synthesized catalyst was tested towards the Schiff base formation reaction between various bio-medical polymers and aniline under air atmosphere at 85°C for 24 h. The catalytic activity of the catalyst was studied by varying the % weight loading of the AC-Ni system towards the Schiff base formation. The Schiff base formation was quantitatively calculated by the 1 H-NMR spectroscopy. While increasing the % weight loading of the AC-Ni catalyst, the % yield of Schiff base was also increased. The k app and Ti values were determined for the reduction of indole and a-terpineol in the presence of AC-Ni catalyst system. The experimental results were compared with the literature report.

show abstract

“…ions. Thus, the appearance of new peaks and shifting in the peak position (Jeyapriya et al 2016) confirmed the Nickel complex formation with AC.…”

Section: Resultsmentioning

confidence: 59%

“…Figure 1a indicates the FTIR spectrum of AC. A broad peak around 3432 cm -1 is due to O-H stretching (Jeyapriya et al 2016). A twin peak at 2937 and 3048 cm -1 are corresponding to the free -NH 2 stretching.…”

Section: Resultsmentioning

confidence: 97%

Synthesis, characterization and catalytic activity of nanosized Ni complexed aminoclay

Ranchani

Parthasarathy

Devi³

et al. 2017

Appl Nanosci

View full text Add to dashboard Cite

show abstract

“…The PCL was prepared by ROP of CL through bulk polymerization method. The standard procedure in brief is mentioned below: In a 25‐mL capacity round bottomed flask (RBF), 2‐g CL monomer is taken. 0.001‐g catalyst, S.O was added into the RBF.…”

Section: Methodsmentioning

confidence: 99%

“…Thus prepared nano Ag doped diblock copolymer was tested for its catalytic activity. For this purpose, reduction of NiP was considered . 6.7 × 10 −3 g NiP was accurately weighed and dissolved in 50‐mL DD water.…”

Section: Methodsmentioning

confidence: 99%

Low temperature splinting activity and catalytic behavior of nano Ag doped sulphamicacid bridged diblock copolymer

Anbarasan

Jeyapriya²,

Meenarathi³

et al. 2018

Polymers for Advanced Techs

View full text Add to dashboard Cite

A novel silver nanoparticle doped diblock copolymer was synthesized by a 3‐step process via bulk polymerization process under nitrogen atmosphere. The above prepared polymer is characterized by FTIR spectroscopy, fluorescence emission spectroscopy, circular dichroism (CD), HRTEM, and FESEM. The sulphamicacid end capped poly(ε‐caprolactone) (P1) system exhibited higher tensile strength than the sulphamicacid bridged diblock copolymer (P2) and nano Ag doped sulphamicacid bridged diblock copolymer (P3) systems. The splinting activity of the diblock copolymers was tested and confirmed the low temperature splinting activity of the diblock copolymer. The Ag nanoparticle catalyzed catalytic reduction of p‐nitrophenol (NiP) was tested, and the apparent rate constant (kapp) was determined as 7.36 × 10−3 sec−1. The thermal studies were carried out by DSC and TGA methods. The TGA study declared that the P1 system has higher degradation temperature than the P2 and P3 systems. The P1 system has higher melting temperature (Tm) (75.5°C) than the P2 and P3 systems. The CD study indicated that the conformation of sulphamicacid was not changed even after the formation of nano Ag doped sulphamicacid bridged diblock copolymer.

show abstract

“…Recently, polymer‐supported catalyst systems have been used to prevent decreases in the concentration of catalyst and to control the reaction. For example, a silver nanoparticle end capped diblock copolymer was used for the reduction of NiP . Similarly, other systems, such as diblock copolymer–V 2 O 5 , fluorescent polyimide–V 2 O 5 nanocomposite, chitosan Schiff base–V 2 O 5 , poly(epichlorohydrin‐ g ‐acid fuchsin)–hydroxyapatite, poly (caprolactone‐ co ‐morpholine)–silver, poly(lactide)–palldium, poly(urethane)–gold, polyhydroxyalkonate–silver, poly(dimethyl aminoethyl methacrylate)–grapheneoxide, chitosan–iron, and polyacrylamide–gold systems, have been used for the catalytic reduction of NiP.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, spectral analysis, and catalytic activity of poly(aniline‐co‐congored)–metal oxide nanocomposites

Ponprapakaran¹,

Subramani²,

Baskaran³

et al. 2018

J of Applied Polymer Sci

View full text Add to dashboard Cite

Electrically conducting, water‐soluble fluorescent copolymer nanocomposites were synthesized by a solution polymerization method under different experimental conditions in the presence of CuO and V2O5 nanoparticles. The prepared copolymer nanocomposites were characterized with analytical tools, including Fourier transform infrared spectroscopy, ultraviolet–visible (UV–vis) spectroscopy, and fluorescence emission spectroscopy. The order of copolymerization was determined on the basis of the UV–vis absorption spectra and fluorescence emission spectra. The copolymer–CuO nanocomposite system exhibited the highest electrical conductivity. The scanning electron microscopy image showed the presence of more CuO nanoparticles on the surface of the copolymer. Furthermore, the catalytic activity of the copolymer nanocomposites was tested for the reduction of p‐nitrophenol. All three types of polymer systems exhibited almost the same apparent rate constant values. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46469.

show abstract

Synthesis, characterization, catalytic and splinting activity of nano Ag end capped l‐glutathione bridged amphiphilic diblock copolymer

Cited by 13 publications

References 43 publications

Synthesis, characterization and catalytic activity of nanosized Ni complexed aminoclay

Synthesis, characterization and catalytic activity of nanosized Ni complexed aminoclay

Low temperature splinting activity and catalytic behavior of nano Ag doped sulphamicacid bridged diblock copolymer

Synthesis, spectral analysis, and catalytic activity of poly(aniline‐co‐congored)–metal oxide nanocomposites

Contact Info

Product

Resources

About