Photochemical study of an o-ethyl dibenzodioxocin molecule as a model for the photodegradation of non-phenolic lignin units of lignocellulosics

Autor: Aziz Nourmamode, William Hoareau, Bernard Siegmund, Christian Gardrat, Alain Castellan, Stéphane Grelier, Reinaldo Ruggiero

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 167:111-120

The photochemical behavior of compound 1 was studied as representative of a non-phenolic dibenzodioxocin lignin model, because the presence of both photoreactive α-O-4 and β-O-4 linkages in these structures should bring a high photosensivity of the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c0137bc9b629f4b1a7d038035ed48f06
https://doi.org/10.1016/j.jphotochem.2004.04.008

Synthesis and complexation properties of two new curcuminoid molecules bearing a diphenylmethane linkage

Autor: Alain Castellan, Aziz Nourmamode, Alain Fritsch, Agus Sundaryono, Christian Gardrat

Publikováno v: Journal of Molecular Structure. 649:177-190

Bis-curcuminoids 3 and 4 , bearing a diphenylmethane bridge for both compounds and a crown ether chain adapted to complex Li + for compound 4 , were synthesized and characterized by mass and NMR spectroscopies. By their preorganized geometry, they re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::796fdc670cc4d8cea746e1fb01734c13
https://doi.org/10.1016/s0022-2860(03)00050-4

Photosensitized Delignification of Residual Lignin and Chemical Pulp from Eucalyptus grandis Wood

Autor: Alain Castellan, Stéphane Grelier, Aziz Nourmamode, Antonio E.H. Machado, Denilson Da Silva Perez, Reinaldo Ruggiero

Publikováno v: Holzforschung. 56:595-600

Summary Bleached pulps were obtained from a Eucalyptus grandis peroxyformic/formic acid chemical pulp using oxygen, hydrogen peroxide, photosensitizers (methylene blue, Fe (II) 4,4′,4″,4‴-tetrasulfophthalocyanine, hemin, hematoporphyrin) and/or

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b21263bf5f17ec5ab36c65db8307cb4
https://doi.org/10.1515/hf.2002.091

Selective interaction in solution between ammonium groups of a cationic starch and aromatic probes revealed by fluorescence emission

Autor: P Looten, Stéphane Grelier, Aziz Nourmamode, M Norell, V Sartor, Alain Castellan

Publikováno v: Journal of Photochemistry and Photobiology A: Chemistry. 141:183-192

Two fluorescent sensors A1 and A2, designed to complex selectively ammonium groups of cationic starch were synthesized and their fluorescence properties evaluated. They display fluorescence intensity enhancement (FIE) due to the complexation of ammon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bfca30c9c3d3c72f261372f22c9d45c
https://doi.org/10.1016/s1010-6030(01)00464-6

The Improvement of the Bleaching of Peroxyformic Sugar Cane Bagasse Pulp by Photocatalysis and Photosensitization

Autor: M.G.H. Terrones, Denilson Da Silva Perez, Aziz Nourmamode, Antonio E.H. Machado, Reinaldo Ruggiero, Stéphane Grelier, Alain Castellan

Publikováno v: Scopus-Elsevier
Journal of the Brazilian Chemical Society v.10 n.3 1999
Journal of the Brazilian Chemical Society
Sociedade Brasileira de Química (SBQ)
instacron:SBQ
Journal of the Brazilian Chemical Society, Vol 10, Iss 3, Pp 197-202 (1999)
Journal of the Brazilian Chemical Society, Volume: 10, Issue: 3, Pages: 197-202, Published: 1999

Presented here is a new process in two stages for bleaching peroxyformic sugar cane bagasse pulp combining photosensitization and photocatalysis. The first stage consists of an irradiation (1h), with tungsten or mercury lamps, of the pulp under alkal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2697b6bc81104f7c7c81b0e579ae87cf
https://doi.org/10.1590/s0103-50531999000300007