Mechanochromism, thermochromism, protonation effect and discrimination of CHCl3 from organic solvents in a Et2N-substituted Salicylaldehyde Schiff base

2021 ◽  
pp. 109708
Author(s):  
Jun Shu ◽  
Tong Ni ◽  
Xiaoqiang Liu ◽  
Bin Xu ◽  
Lang Liu ◽  
...  
Keyword(s):  
Schiff Base ◽  
Organic Solvents ◽  
Protonation Effect

A New Fluorescent Material of Zn (II) Complex with 1-Acetyl-2-Naphthol-4, 4’-Diaminodiphenylmethane

2011 ◽  
Vol 399-401 ◽  
pp. 1026-1029
Author(s):  
Li Hua Wang
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Organic Solvents ◽  
Green Fluorescence ◽  
Blue Fluorescence ◽  
Complex Material ◽  
Fluorescent Material

A novel bi-Schiff-base Zn (II) complex, 1-acetyl-2-naphthol-4, 4’-diaminodiphenylmethane Zn (II), has been synthesized. The luminescent characterizations of the Zn (II) complex material have been studied in solid state and in organic solvents, and the effect of Mg (II) ion on the fluorescence of Zn (II) complex has also been investigated in organic solvents. The results show that the Zn (II) complex material emits weak green fluorescence at 536 nm in solid, emits strong blue fluorescence 451 nm in DMSO. However, there do have luminescent emissions in methanol and in ethanol duo to the influence of overtones.

Lyotropic liquid crystallinity in mixed-tautomer Schiff-base macrocycles

2015 ◽  
Vol 51 (90) ◽  
pp. 16205-16208 ◽  
Author(s):  
Jian Jiang ◽  
Ronald Y. Dong ◽  
Mark J. MacLachlan
Keyword(s):  
Schiff Base ◽  
Liquid Crystal ◽  
Organic Solvents ◽  
Lyotropic Liquid Crystal ◽  
Organic Cations ◽  
Liquid Crystallinity ◽  
Schiff Base Macrocycles

New Schiff-base macrocycles that combine keto-enamine and enol-imine tautomers are reported. As well as forming host–guest complexes with organic cations, these macrocycles form a lyotropic liquid crystal in organic solvents.

Synthesis and Spectral Characterization of a New Mg (II)-Schiff Base Luminescent Materials

2011 ◽  
Vol 366 ◽  
pp. 145-148
Author(s):  
Xi Shi Tai
Keyword(s):  
Schiff Base ◽  
Infrared Spectrum ◽  
Organic Solvents ◽  
Elemental Analysis ◽  
Schiff Base Ligand ◽  
Luminescent Materials ◽  
Fluorescent Intensity ◽  
Complex Material ◽  
Factors Influencing

A new Schiff base ligand, salicylaldehyde-4, 4'-diaminodiphenyl ether (L), and its complexes with Mg (II) have been synthesized. The Mg (II) complex was characterized by elemental analysis and infrared spectrum. The results indicate that the Mg (II) ion coordinates to the nitrogen atoms and oxygen atoms of the ligand. The fluorescence properties of Mg (II) complex material in solid and in organic solvents were studied. The solvent factors influencing the fluorescent intensity are discussed.

Synthesis and Luminescent Properties of Two Zn (II) Complexes with Schiff-Base Ligand

2011 ◽  
Vol 322 ◽  
pp. 341-344 ◽  
Author(s):  
Yi Min Feng
Keyword(s):  
Schiff Base ◽  
Organic Solvents ◽  
Schiff Base Ligand ◽  
Luminescence Intensity ◽  
Zinc Acetate Dihydrate ◽  
Luminescent Properties ◽  
Luminescent Intensity ◽  
Dmso Solution ◽  
Acetate Dihydrate ◽  
Schiff Base Ligands

Two Zn (II) complexes have been prepared by reaction of zinc acetate dihydrate with Schiff-base ligands. The IR spectra of complexes were measured. The luminescence properties of the Zn (II) complexes in solid and in methanol, ethanol and DMSO solution were investigated and the effects of organic solvents on the luminescent intensity of Zn (II) complexes also were studied. The results show that the Zn (II) ions formed stable complexes. The complexes exhibited maximum fluorescence emissions in blue region and the organic solvents have effect on the luminescence intensity.

scholarly journals Attempt to Reduce Potentially Flammable Organic Solvents in Chemical Synthesis

2021 ◽  
pp. 16-18
Author(s):  
Takashiro Akitsu ◽  
Yuika Onami ◽  
Tetsundo Furuya
Keyword(s):  
Schiff Base ◽  
Organic Solvent ◽  
Organic Solvents ◽  
Synthesis Methods ◽  
Chemical Laboratory ◽  
X Ray ◽  
X Ray Crystallography ◽  
Research Article ◽  
Schiff Base Metal Complexes

A fire sometimes ignited an organic solvent in a chemical laboratory. A mechanochemical synthesis may be a good way to reduce the amount of organic solvents or without organic solvents compared to conventional synthesis in solutions. The solvent affected the product, namely solvent methanol acted as a ligand, although the quality of the data of X-ray crystallography is usually difficult to report in a strict research article in the case of our Azo-Schiff base metal complexes. Thus substitution of synthesis methods associated with potentially dangerous organic solvents may be possible depending on the application or purpose.

Fluorescent Properties of Mg (II) Complex with 1-Acetyl-2-Naphthol-4, 4’-Diaminodiphenylmethane

2012 ◽  
Vol 424-425 ◽  
pp. 14-17
Author(s):  
Li Hua Wang
Keyword(s):  
Schiff Base ◽  
Organic Solvents ◽  
Schiff Base Ligand ◽  
Luminescent Material ◽  
Fluorescent Properties ◽  
Complex Material

A mono-ligand neutral Mg (II) complex of a Schiff base ligand derived from 1-acetyl-2-naphthol and 4, 4’-diaminodiphenylmethane was prepared and characterized. The Schiff base acts as a double, negatively charged quadridentate ligand forming stable neutral Mg (II) complex. The luminescent characterizations of the Mg (II) complex material in solid and in organic solvents show that the Mg (II) complex has strong luminescent emission at ca. 452 nm when excited at 323 nm. The Mg (II) complex synthesized may be an excellent luminescent material.

Novel liquid crystalline organogelators based on terephthalic acid and terephthalaldehyde derivatives: properties and promotion through the formation of halogen bonding

2020 ◽  
Vol 44 (2) ◽  
pp. 614-625
Author(s):  
Yaodong Huang ◽  
Xiaojie Zhang ◽  
Wei Cui ◽  
Xin Wang ◽  
Bin Li ◽  
...  
Keyword(s):  
Schiff Base ◽  
Organic Solvents ◽  
Terephthalic Acid ◽  
Liquid Crystalline ◽  
Halogen Bonding

Terephthalic acid-based aromatic amides A1 and A2 and a terephthalaldehyde Schiff-base SB are synthesized, allowing stable gelation with numerous types of organic solvents.

The Colorimetric Signaling of Water Content by a Deprotonated Schiff Base in some Aprotic Organic Solvents

2020 ◽  
Vol 5 (30) ◽  
pp. 9547-9553 ◽  
Author(s):  
Karishma Tiwari ◽  
Monika Mishra ◽  
Saumya Singh ◽  
Vinod P. Singh
Keyword(s):  
Schiff Base ◽  
Water Content ◽  
Organic Solvents

Zirconyl schiff base complex-functionalized MCM-41 catalyzes dehydration of fructose into 5-hydroxymethylfurfural in organic solvents

2019 ◽  
Vol 30 (2) ◽  
pp. 359-362 ◽  
Author(s):  
Yongdi Xie ◽  
Wenwen Yuan ◽  
Yi Huang ◽  
Chunyan Wu ◽  
Haijun Wang ◽  
...  
Keyword(s):  
Schiff Base ◽  
Organic Solvents ◽  
Schiff Base Complex ◽  
Base Complex ◽  
Mcm 41
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