Preparation and characterization of vanillin-chitosan Schiff base zinc complex for a novel Zn2+ sustained released system

2021 ◽  
Author(s):  
Chaoqiang Huang ◽  
Haiyan Liao ◽  
Xuhong Liu ◽  
Min Xiao ◽  
Songyi Liao ◽  
...  
Keyword(s):  
Schiff Base ◽  
Zinc Complex ◽  
Chitosan Schiff Base

Preparation and Characteristics of Novelty Chitosan Schiff Base and its Zinc Complexes

2011 ◽  
Vol 239-242 ◽  
pp. 1364-1367 ◽  
Author(s):  
Xue Wen Wu ◽  
Yan Xiong
Keyword(s):  
Schiff Base ◽  
Elemental Analysis ◽  
Water Loss ◽  
Zinc Complex ◽  
Physicochemical Characteristics ◽  
Zinc Complexes ◽  
Thermal Behaviors ◽  
Ft Ir ◽  
And Performance ◽  
Chitosan Schiff Base

In this paper, a new kind of chitosan schiff base and its zinc complexes were prepared. Chitosan schiff base (CS-DBSB) was obtained when 3, 5-Di-tert-butyl salicylaldehyde was introduced to the C-2 nitrogen position of chitosan. Its zinc complex of CS-DBSB (CS-DBSB-Zn) was also prepared. The structure and performance of physicochemical characteristics of CS-DBSB and CS-DBSB-Zn were examined by FT-IR, elemental analysis, thermogravimetric (TG). The thermal behaviors of CS-DBSB and CS-DBSB-Zn were described. TG curves presented three events including water loss, decomposition of the polysaccharide generating a carbonaceous residue that burns at higher temperatures.

Synthesis, and characterization of chitosan bearing pyranoquinolinone moiety for textile dye adsorption from wastewater

2020 ◽  
Vol 81 (3) ◽  
pp. 421-435
Author(s):  
Shaimaa M. Ibrahim ◽  
Hany M. Hassanin ◽  
Marwa M. Abdelrazek
Keyword(s):  
Schiff Base ◽  
Dye Adsorption ◽  
Freundlich Isotherm ◽  
Textile Dye ◽  
Order Kinetic ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Remazol Red ◽  
Chitosan Schiff Base

Abstract A novel compound was synthesized by the reaction of the amino group of the chitosan with the formyl group of pyrano[3,2-c]quinoline-3-carboxaldehyde moiety, which produced chitosan modified with a Schiff base (chitosan Schiff base). The structure of the newly prepared composite was elucidated. Chitosan Schiff base was used to remove the textile anionic remazol red (RR) dye from wastewater. The kinetic data and adsorption isotherm were best fitted by the pseudo-second-order kinetic model and the Freundlich isotherm, respectively. Thermodynamic parameters were calculated. Chitosan Schiff base resulted in 100% removal of carcinogenic dye at 2 min only with qm 344.8 mg/g, and may do the same for other anionic reactive dyes, thus avoiding secondary pollution.

On the importance of RH3C•••N tetrel bonding interactions in the solid state of a dinuclear zinc complex with a tetradentate Schiff base ligand

CrystEngComm ◽  
2021 ◽  
Author(s):  
IPSITA MONDAL ◽  
Antonio Frontera ◽  
Shouvik Chattopadhyay
Keyword(s):  
Schiff Base ◽  
Solid State ◽  
Schiff Base Ligand ◽  
Zinc Complex ◽  
X Ray ◽  
Tetradentate Schiff Base

The synthesis and X-ray characterization of a new dinuclear Zn complex using a tetradentate N2O2 donor Schiff base and azide as anionic co-ligand of formula [(DMSO)2ZnL(µ1,1-N3)Zn(N3)2] (1) is reported herein....

Synthesis and characterization of novel nano-chitosan Schiff base and use of lead (II) sensor

2012 ◽  
Vol 51 (5) ◽  
pp. 1159-1166 ◽  
Author(s):  
Nuriye Kocak ◽  
Mustafa Sahin ◽  
Semahat Kücükkolbasi ◽  
Zehra Ozden Erdogan
Keyword(s):  
Schiff Base ◽  
Synthesis And Characterization ◽  
Chitosan Schiff Base

Synthesis and Characterization of Some New Esters Containing Heterocyclic and Derived From Azo Dyes

2019 ◽  
Vol 9 (02) ◽  
Author(s):  
Zena G. Alrecabi ◽  
Zainab Amer ◽  
Naeemah Al-Lami
Keyword(s):  
Schiff Base ◽  
13C Nmr ◽  
Azo Dyes ◽  
Spectral Methods ◽  
Anthranilic Acid ◽  
Heterocyclic Compounds ◽  
Synthesis And Characterization ◽  
Cooh Group ◽  
Molecular Weights

This study including prepared new colored esters containing heterocyclic with high molecular weights. In the first part of work we synthesized azo dyes [1,2] from the reaction p-toluidine with β-naphthol and o-nitro phenol, thin we synthesized Schiff bases [3,4] by the reaction anthranilic acid with benzaldehyde and dimethyl benzaldehyde. The reaction azo dyes (contain OH group) with Schiff base (contain COOH group) these led to produce the new colored esters [A1-A4]. The second part of work was modification the (C=N-) group in esters to heterocyclic compounds by reacting with phenyl iso cyanide to produce new β-lactam [B1-B4] and with anthranilic acid to get new hydroquinazoline [C1-C4]. All these compounds were characterized by physical properties and spectral methods FTIR, 1H-NMR and 13C-NMR.

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