Synthesis of an azo-Mn(<scp>ii</scp>) complex with mild pH control using a microfluidic device

Tanaka, Daiki; Sawai, Shunsuke; Yoon, Dong Hyun; Sekiguchi, Tetsushi; Akitsu, Takashiro; Shoji, Shuichi

doi:10.1039/c7ra06089k

Cited by 7 publications

(5 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electronic spectra of the pigment LR and its derivatives LR–Mn and LR–Co presented in Figure 3 showed very similar absorption pattern suggesting very similar composition for the three compounds. Absorption bands in the region 200–400 nm may be due to the electronic transition π →π * and n→π * (Tanaka et al , 2020; Tanaka et al , 2017), whereas the very intense absorption in the region 500–600 nm may be attributed to charge transfer from ligand to metal (Housecroft and Sharpe, 2012; Miessler et al , 2014).…”

Section: Resultsmentioning

confidence: 99%

Synthesis, spectroscopic and physico-chemical studies of novel pigments derived from Lithol Rubine

Abdelmaksoud¹,

Abo-Aly

Teleb

et al. 2022

PRT

View full text Add to dashboard Cite

Purpose The pursuit of manufacturing new inks with low financial cost is an urgent economic demand. Thus, the purpose of this paper is to synthesize some new pigments derived from Lithol Rubine (LR) via a successful simple route and to investigate their physicochemical properties for usage in the inks industry. Design/methodology/approach Two novel pigments were generated during the reaction of LR with Mn(II) and Co(II) salts in ethanolic solutions. The obtained pigments were isolated as solid compounds and characterized through elemental analysis, UV–vis, Fourier transform infrared, 1H NMR spectra, oil absorption, specific gravity, melting point, molar conductivity and magnetic moment measurements. Their dyeing and durability characteristics were examined using American Standard Testing Methods. The synthesized pigments were then applied in inks formulation. Findings The printing inks containing the two new pigments (LR–Mn and LR–Co) were compared to (GF 59-606 and GF 59-616), respectively. The results of this study showed that the performance of newly prepared pigments was comparable to that of commercial pigments currently in use in the inks industry. Practical implications LR and its new derivative pigments can be used in other different applications such as paper coating, crayon, rubber and paint industries. Originality/value The authors designed an efficient synthesis for some novel pigments. The synthesis technique is featured by a short reaction time, high yields and ease of use. The pigments developed would be good and cost-effective substitute for the original commercially available and expensive pigments used in the inks industry.

show abstract

Section: Resultsmentioning

confidence: 99%

Synthesis, spectroscopic and physico-chemical studies of novel pigments derived from Lithol Rubine

Abdelmaksoud¹,

Abo-Aly

Teleb

et al. 2022

PRT

View full text Add to dashboard Cite

show abstract

“…According to the previous studies of AQ‐based covalent organic frameworks (COFs) (46), the prominent peak at 1292.6 cm −1 in M‐AQ‐CTFs can be assigned as the stretching mode of ─C─N─. Based on the IR features of azo‐compounds (47), the peak at 1567.9 cm −1 in M‐AQ‐CTFs is clearly observed and corresponds to the stretching mode of ─N = N─. This IR band, corresponding to the group of ─N = N─, is absent in the spectrum of AQ monomer.…”

Section: Resultsmentioning

confidence: 99%

Covalent Triazine Framework as an Efficient Photocatalyst for Regeneration of NAD(P)H and Selective Oxidation of Organic Sulfide

Chaubey

Yadav

Tripathi

et al. 2021

Photochem & Photobiology

View full text Add to dashboard Cite

Covalent triazine frameworks (CTFs), belonging to the super‐family of covalent organic frameworks, have attracted significant attention as a new type of photosensitizer due to the superb light‐harvesting ability and efficient charge transfer originating from the large surface area. However, the wide optical band gap in CTFs, which is larger than 3.0 eV, hinders the efficient light harvesting in the visible range. To overcome this limitation, we developed the new type CTFs photocatalyst based on the donor–acceptor conjugation scheme by using melamine (M) and 2,6‐diaminoanthraquinone (AQ) as monomeric units. The melamine‐2,6‐diaminoanthraquinone‐based covalent triazine frameworks (M‐AQ‐CTFs) photocatalyst shows the excellent light‐harvesting capacity with high molar extinction coefficient, and the suitable optical band gap involving the internal charge transfer character. Combination of M‐AQ‐CTFs and artificial photosynthetic system including the organometallic rhodium complex, acting as an electron mediator, exhibited the excellent photocatalytic efficiency for the regeneration of the nicotinamide cofactors such as NAD(P)H. In addition, this photocatalyst showed the high photocatalytic efficiency for the metal‐free aerobic oxidation of sulfide. This study demonstrates the high potential of CTFs photocatalyst with the donor–acceptor conjugated scheme can be actively used for artificial photosynthesis.

show abstract

“…By devising the groove design of the microfluidic device, it is possible to separate product AB from the unreacted products, react product AB with reactant C, or separate the target ABC from unreacted AB or unreacted products. Therefore, refinement from C is not required [ 15 , 16 ]. (4) Space savings are evident when compared to the installation space of reaction vessels, draft columns, etc., in a typical chemical laboratory.…”

Section: Introductionmentioning

confidence: 99%

“…Y-shaped microfluidic devices have been designed to couple the product of a previous step to one of the reactants of the next step [ 10 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Towards Industrially Important Applications of Enhanced Organic Reactions by Microfluidic Systems

Zafar,

Takeda,

Manzoor

et al. 2024

Molecules

Self Cite

View full text Add to dashboard Cite

This review presents a comprehensive evaluation for the manufacture of organic molecules via efficient microfluidic synthesis. Microfluidic systems provide considerably higher control over the growth, nucleation, and reaction conditions compared with traditional large-scale synthetic methods. Microfluidic synthesis has become a crucial technique for the quick, affordable, and efficient manufacture of organic and organometallic compounds with complicated characteristics and functions. Therefore, a unique, straightforward flow synthetic methodology can be developed to conduct organic syntheses and improve their efficiency.

show abstract

Synthesis of an azo-Mn(ii) complex with mild pH control using a microfluidic device

Abstract: This study describes a new control method of pH for azo-Mn(ii) complexes that requiring an accurate pH control by fluidic device.

Cited by 7 publications

References 24 publications

Synthesis, spectroscopic and physico-chemical studies of novel pigments derived from Lithol Rubine

Synthesis, spectroscopic and physico-chemical studies of novel pigments derived from Lithol Rubine

Covalent Triazine Framework as an Efficient Photocatalyst for Regeneration of NAD(P)H and Selective Oxidation of Organic Sulfide

Towards Industrially Important Applications of Enhanced Organic Reactions by Microfluidic Systems

Contact Info

Product

Resources

About