A novel multicomponent polymer poly[(S)-ML-PPCA], bearing three distinct functional groups (i.e. azoaromatic, carbazole and chiral of one single configuration) jointly linked to the side chain has been synthesized and its properties compared to those of a similar derivative poly[M-PPCA], lacking of the chiral moiety, as far as photochromism and photoconductivity are concerned. Due to the presence of the chiral moiety, poly[(S)-ML-PPCA], besides higher optical activity than the related monomer, displays additional chiroptical properties with respect to poly[M-PPCA], allowing in particular the assessment of its photoresponsive properties connected to the trans-cis isomerization of the azoaromatic double bond by circular dichroism measurements and giving therefore the possibility of application as chiroptical switch too.
Effect of a chiral substituent on the photochromic and photoconductive properties of a methacrylic polymer bearing side chain azocarbazole moieties
ANGIOLINI, LUIGI;BENELLI, TIZIANA;GIORGINI, LORIS;MAZZOCCHETTI, LAURA;
2014
Abstract
A novel multicomponent polymer poly[(S)-ML-PPCA], bearing three distinct functional groups (i.e. azoaromatic, carbazole and chiral of one single configuration) jointly linked to the side chain has been synthesized and its properties compared to those of a similar derivative poly[M-PPCA], lacking of the chiral moiety, as far as photochromism and photoconductivity are concerned. Due to the presence of the chiral moiety, poly[(S)-ML-PPCA], besides higher optical activity than the related monomer, displays additional chiroptical properties with respect to poly[M-PPCA], allowing in particular the assessment of its photoresponsive properties connected to the trans-cis isomerization of the azoaromatic double bond by circular dichroism measurements and giving therefore the possibility of application as chiroptical switch too.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.