Synthesis and spectral studies on metal complexes of s-triazine based ligand and non linear optical properties

Shanmugakala, R.; Tharmaraj, P.; Sheela, C.D.

doi:10.1016/j.molstruc.2014.08.012

Cited by 16 publications

(9 citation statements)

References 41 publications

(35 reference statements)

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“…The IR spectrum of the pristine melamine sponge shows the characteristic stretching vibration modes of CN and C−N on the triazine ring at 1542 cm −1 (CN), 13 and 1329 cm −1 (C−N). 22,23 For the spectrum of MII-HMS, the vibration modes at 1542 and 1329 cm −1 shift to the lower wavenumbers of 1539−1541 and 1321−1327 cm −1 , respectively, suggesting that the triazine N atom forms the coordination bonds, 24,25 presumably with the metal ion Fe 3+ . The vibration mode of the amino C−NH shifts from 1468 cm −1 in the pristine melamine sponge to the higher wavenumbers of 1471−1478 cm −1 in MII-HMS, supporting the formation of the coordination bonds between the amino N atom and the metal ion.…”

Section: Resultsmentioning

confidence: 99%

One-Step Preparation of Highly Hydrophobic and Oleophilic Melamine Sponges via Metal-Ion-Induced Wettability Transition

Ding

et al. 2018

ACS Appl. Mater. Interfaces

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Hydrophobic and oleophilic absorbent materials have received wide attention in recent years for potential applications in pollutant removal from accidental spills of oil or organic chemicals. In this work, we report a metal-ion-induced hydrophobic melamine sponge (MII-HMS) prepared by a one-step solution immersion process. The commercial melamine sponge (intrinsically superhydrophilic with a water contact angle of ∼0°) is immersed in an aqueous solution of transition metal ions (e.g., FeCl, Fe(NO), Zn(NO), Ni(NO), and Co(NO)) for a short period, followed by drying. This simple process renders the transition of the superhydrophilic melamine sponge to become highly hydrophobic (a water contact angle of ∼130°). Results from X-ray photoelectron spectroscopy and infrared spectroscopy suggest that the unprecedented transition is likely due to the formation of metal complexes during immersion. The MII-HMS is also oleophilic, exhibiting excellent oil absorption capabilities, ∼71-157 times of its weight, for a wide range of oils and organic solvents. Our work offers a simple, scalable, and economical approach to fabricate highly efficient absorbent materials for potential applications in oil spill recovery and environmental remediation.

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Section: Resultsmentioning

confidence: 99%

One-Step Preparation of Highly Hydrophobic and Oleophilic Melamine Sponges via Metal-Ion-Induced Wettability Transition

Ding

et al. 2018

ACS Appl. Mater. Interfaces

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“…It was expected that N-pyridine and amine groups of MS would be strongly coordinated with Cu 2+ in Cu-CPP (Fig. S3), allowing facile deposition of Cu-CPP on MS surface [39][40][41][42][43][44][45].…”

Section: Synthesis Of Cu-cpp/ms Hybrid Air Filtermentioning

confidence: 99%

“…Melamine sponge (MS) consisting of formaldehyde-melamine-sodium bisulfite copolymer has a welldefined pore structure, allowing polluted air to flow consistently in sponge channels, thus minimizing pressure drop and energy consumption [37,38]. Importantly, MS featuring a high density of amine functional groups is advantageous for nucleation and chemical adhesion between Cu-CPPs functioning as an antimicrobial component [39][40][41][42][43][44][45]. Although MS has been reported to be effective for water disinfection [38,46,47], no study has reported its pathogen disinfection ability in an air phase.…”

Section: Introductionmentioning

confidence: 99%

Melamine sponge-based copper-organic framework (Cu-CPP) as a multi-functional filter for air purifiers

Thanh

Kang

et al. 2022

Korean J. Chem. Eng.

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COVID-19 has drawn great attention on the necessity for establishing pathogen-free indoor air. This paper offers an insight into the potential application of a multi-purpose filter to remove fine particulates and disinfect pathogens using melamine sponge with a copper-organic framework. In-situ growth dip coating method was applied to coat Cu-based coordination polymer particle (Cu-CPP) on melamine sponge (MS). The integration of Cu-CPPs with high crystallinity and highly active surface area (1,318.1 m 2 /g) enabled Cu-CPP/MS to have an excellent capture rate (99.66%) and an instant disinfection rate of 99.54% for Escherichia coli . Electrostatic attraction seemed to play a crucial role in capturing negative-charged pathogens effectively by positive charges on Cu-CPP arising from unbalanced copper ions in Cu-CPP. Disinfection of pathogens was mainly attributed to catalytically active Cu 2+ sites. Organic ligand played an important role in bridging and maintaining Cu 2+ ions within the framework. This study highlights the design of a new capture-and-disinfection (CDS) air filter system for pathogens using Cu-CPP/MS. It can be applied as a substitute for conventional high-efficiency particulate air (HEPA) filters. Electronic Supplementary Material Supplementary material is available for this article at 10.1007/s11814-021-1000-4 and is accessible for authorized users.

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“…The resulting Co(II) complexes 213 and 214 were tested for their nonlinear optical (NLO) and antimicrobial activities. [170] Chen et al in 2013 reported the synthesis of novel oxovanadium pincer complexes 216, 217 and 220 with bis-pyrazolo-s-triazine ligand shown in Scheme 84 as a potential functional model of bromoperoxidase. [171] The synthesized complexes were prepared using the hydrothermal method.…”

Section: Pyrazolo-s-triazine Derivatives and Their Metal Complexesmentioning

confidence: 99%

s‐Triazine pincer ligands: Synthesis of their metal complexes, coordination behavior, and applications

Barakat

El‐Faham

Haukka

et al. 2021

Applied Organom Chemis

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Pincer ligands are interesting chelating agents due to their high ability to motivate the metal ion characteristics leading to diverse types of applications. These ligands and their metal complexes are smart materials which have a great impact in the development of diverse applications helped alot in the advancement of the field of coordination chemistry. In homogenous catalytic transformations, pincer ligands improved the chemical and thermal stability that serve to minimize the leaching of the metal during the catalytic cycle. Also, they offered the ability to fine‐tune the electronic properties for the metal center, thereby increasing the scope of their coordination chemistry and applications especially the pincer ligands comprising s‐triazine core. This review discusses some of the general synthetic protocols of these s‐triazine pincer ligands and their metal complexes with various applications in different fields. In addition, their structural diversity and the ligand coordination behaviors with different metal ions were also explored.

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Synthesis and spectral studies on metal complexes of s-triazine based ligand and non linear optical properties

Cited by 16 publications

References 41 publications

One-Step Preparation of Highly Hydrophobic and Oleophilic Melamine Sponges via Metal-Ion-Induced Wettability Transition

One-Step Preparation of Highly Hydrophobic and Oleophilic Melamine Sponges via Metal-Ion-Induced Wettability Transition

Melamine sponge-based copper-organic framework (Cu-CPP) as a multi-functional filter for air purifiers

s‐Triazine pincer ligands: Synthesis of their metal complexes, coordination behavior, and applications

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