Carbohydrate polymers 2015-06-05

Fluorescent imino and secondary amino chitosans as potential sensing biomaterials.

Sorel Jatunov, Antonio Franconetti, Rafael Prado-Gotor, Angeles Heras, Marian Mengíbar, Francisca Cabrera-Escribano

文献索引：Carbohydr. Polym. 123 , 288-96, (2015)

全文：HTML全文

摘要

A variety of fluorescent imino and secondary amino chitosans were synthesized under very mild conditions by reaction of the biopolymer amino functions with aromatic aldehydes in an acidified methanolic suspension. Simultaneous reactions of several aldehydes with chitosan were successfully carried out, and kinetic studies showed that 1-pyrenecarboxaldehyde reacts the fastest among them. An unprecedented study on the evaluation of the degree of N-substitution (DS, ranging from 31.7% to 12.0%) for the chitosan Schiff bases by using solid state CPMAS (13)C NMR is performed. A linear correlation between the DS obtained for the secondary amino chitosans by (1)H NMR (55.3-10.2%) and those obtained by CPMAS (13)C NMR (34.4-13.8%) has allowed us to calculate an empirical correlation factor that could be applied on chitosan-based aromatic systems. The new chiral-labelled chitosan derivatives exhibit a stable fluorescent behaviour, which was used to explore solvent sensoring applications. Copyright © 2015 Elsevier Ltd. All rights reserved.

相关化合物

  • 4-羟基苯甲醛; 对羟...
  • 对硝基苯甲醛
  • 1-芘甲醛
  • 4-联苯甲醛

相关文献：

Effect of electron donating groups on polyphenol-based antioxidant dendrimers.

2015-04-01

[Biochimie 111 , 125-34, (2015)]

Steam explosion distinctively enhances biomass enzymatic saccharification of cotton stalks by largely reducing cellulose polymerization degree in G. barbadense and G. hirsutum.

2015-04-01

[Bioresour. Technol. 181 , 224-30, (2015)]

Convenient QSAR model for predicting the complexation of structurally diverse compounds with β-cyclodextrins

2009-01-01

[Bioorg. Med. Chem. 17 , 896-904, (2009)]

Formation of trichloronitromethane and dichloroacetonitrile in natural waters: precursor characterization, kinetics and interpretation.

2015-01-01

[J. Hazard. Mater. 283 , 218-26, (2014)]

3D-QSAR and molecular docking studies of benzaldehyde thiosemicarbazone, benzaldehyde, benzoic acid, and their derivatives as phenoloxidase inhibitors.

2007-03-01

[Bioorg. Med. Chem. 15 , 2006-15, (2007)]

更多文献...