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metadata.artigo.dc.title: Inclusion complexes of Schiff bases as phytogrowth inhibitors
metadata.artigo.dc.creator: Fernandes, Sergio Antonio
Tavares, Eder do Couto
Teixeira, Róbson Ricardo
Silva, Cleiton Moreira da
Montanari, Ricardo Marques
Fátima, Ângelo de
Anconi, Cleber Paulo Andrada
Almeida, Wagner Batista de
Santos, Hélio Ferreira dos
Silva, Antônio Alberto da
metadata.artigo.dc.subject: Schiff base
Host–guest systems
Molecular dynamics
Base de Schiff
Sistemas host-convidado
metadata.artigo.dc.publisher: Springer Feb-2013
metadata.artigo.dc.identifier.citation: FERNADES, S. A. et al. Inclusion complexes of Schiff bases as phytogrowth inhibitors. Journal of Inclusion Phenomena and Macrocyclic Chemistry, Dordrecht, v. 75, n. 1-2, p. 197-204, Feb. 2013.
metadata.artigo.dc.description.abstract: This article details the preparation, characterization and phytotoxic evaluation of several Schiff base inclusion complexes obtained from β-cyclodextrin and p-sulfonic acid calix[6]arene. The inclusion complexes (1:1 molar ratio) were prepared by mixing a 5 mmol L−1 aqueous solution (containing 1 % DMSO) of Schiff bases (guests) with aqueous solution (containing 1 % DMSO) of 5 mmol L−1 of β-cyclodextrin or p-sulfonic acid calix[6]arene (hosts). The host–guest systems were characterized via a series of NMR experiments. The ability of the complexes to interfere with the radicle elongation of Sorghum bicolor (dicotyledonous species) and Cucumis sativus (monocotyledonous species) was evaluated. After 48 h, the inclusion complexes inhibited the radicle elongation of both species from 11 to 56 %. The formation of inclusion complexes was also investigated theoretically by molecular dynamics simulations in aqueous solution through implicit approach. Based on the experimental observation, the phytotoxic activity evaluated can be attributed to the formation of host–guest systems. This was supported by the theoretical findings based on stable interaction energy analyses for all the studied supramolecular systems.
metadata.artigo.dc.language: en_US
Appears in Collections:DQI - Artigos publicados em periódicos

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