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Synthesis and characterization of photosensitive 4,4′‐bis(dimethylamino)diphenylmethyl ethers of cellulose
Author(s) -
Heinze Thomas,
Erler Ulrich,
Heinze Ute,
Camacho Juan,
Grummt UlrichWalter,
Klemm Dieter
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960613
Subject(s) - chemistry , dimethylacetamide , cellulose , dimethylformamide , ether , polymer chemistry , absorption spectroscopy , absorption (acoustics) , tetrahydrofuran , flash photolysis , photodissociation , photochemistry , solvent , organic chemistry , materials science , kinetics , physics , quantum mechanics , reaction rate constant , composite material
Soluble 4,4′‐bis(dimethylamino)diphenylmethyl ethers of cellulose ( 2 ) with a degree of substitution from 0,5 to 1,0 were prepared by therification of cellulose dissolved in N,N ‐dimethylacetamide/LiCl. These ethers 2 show typical absorption spectra with an absorption maximum at 265 nm. While in neutral and basic medium 2 are stable, under acidic conditions a significant cleavage of the ether bonds occurs and thereby the formation of Michler's hydrol blue (absorption maximum at 604 nm). 2 was found to be photoconducting as film cast from a N,N ‐dimethylformamide solution, for instance. Preliminary studies of the behavior of solutions of 2 by irradiation by means of flash photolysis and UV spectroscopy were carried out as well.