Polyoxometalate/laccase-mediated oxidative polymerization of catechol for textile dyeing.
The synergistic effect between polyoxometalates (POMs), namely K(5)[SiW(11)V(V)O(40)]·11H(2)O and H(5)[PMo(10)V(V) (2)O(40)]·13H(2)O and laccase from ascomycete Myceliophthora thermophila has been employed for the first time in oxidative polymerization of catechol. Such a laccase-mediator system allowed the formation of a relatively high molecular weight polycatechol as confirmed by size exclusion chromatography and electrospray ionization mass spectrometry (ESI-MS) (3990 Da when using K(5)[SiW(11)V(V)O(40)]·11H(2)O and 3600 Da with H(5)[PMo(10)V(V) (2)O(40)]·13H(2)O). The synthesized polymers were applied as dyes for the dyeing of flax fabrics. The color intensity of flax fabrics colored with polymer solutions was evaluated by diffuse reflectance spectrophotometry via k/s measurements (+10% of fixation ratio). A new synthetic process allowed a dyeing polymer, provided upon flax coloration, better color fixation and color resistance when compared to that obtained by conventional synthesis with laccase solely or with addition of organic mediator (1-hydroxybenzotriazole).
Textile Engineering Department, University of Minho, 4800-058 Guimarães, Portugal.
Suyeon
S
Kim
Carla
C
Silva
Dmitry V
DV
Evtuguin
José A F
JA
Gamelas
Artur
A
Cavaco-Paulo
D002396:Catechols / Q000737:chemistry / Q000378:metabolism*; D002850:Chromatography, Gel; D004396:Coloring Agents / Q000378:metabolism*; D042845:Laccase / Q000302:isolation & purification / Q000378:metabolism*; D008970:Molecular Weight; D058105:Polymerization; D020037:Sordariales / Q000201:enzymology*; D021241:Spectrometry, Mass, Electrospray Ionization; D013783:Textile Industry / Q000379:methods*; D013784:Textiles; D017973:Tungsten Compounds / Q000378:metabolism*; D000099294:Polyoxometalates
D002396:Catechols; D004396:Coloring Agents; D042845:Laccase; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates; C034221:catechol