Helical structure of sugar-carrying polystyrene in aqueous solution by circular dichroism

Glycodynamers: Fluorescent Dynamic Analogues of Polysaccharides

“…Indeed, the 1 H NMR signals of the main chain are so broadened that they can no longer bee seen, whereas those of the flexible saccharide side chains are still observable. Furthermore, the fluorescence intensity markedly decreases (by a factor of more than three) upon heating the polymer solution from 23 °C to 85 °C; this effect is presumably due to the destabilization of the highly packed structure 28. A similar result is obtained on dissolving polymer 1 a ⋅ 2 b in DMSO, a solvent which is expected to lead to “denaturation” 23…”

Glycodynamers: Fluorescent Dynamic Analogues of Polysaccharides

“…Furthermore, the fluorescence intensity markedly decreases (by a factor of more than three) upon heating the polymer solution from 23 8C to 85 8C; this effect is presumably due to the destabilization of the highly packed structure. [28] A similar result is obtained on dissolving polymer 1 a·2 b in DMSO, a solvent which is expected to lead to "denaturation". [23] Demonstration of the dynamic character of the present glycopolymers was achieved by adding an equimolar amount of the dihydrazide monomer 1 b to the polymer 1 a·2 b and monitoring its incorporation into the backbone of the polymeric structure by 1 H NMR spectroscopy.…”

Glycopolymer Nanobiotechnology

“…169−171 Polystyrene carrying lactose (PVLA) glycopol- ymers formed isotactic structures and showed strong circular dichroism based on the amphiphilicity and chirality of the polymers. 172 PVLA polymers formed helical rodlike structures with a hydrophobic cavity. The Miura group reported the nanowire formation with the self-assembling ability of PVLA glycopolymers for nanowire formation.…”

“…Polystyrene-substituted glycopolymers form helical rodlike structures because of the amphiphilicity and chiral properties of the glycopolymers. Wataoka et al have reported rodlike structures formed by maltopentaose and lactose carrying polystyrene polymers using small-angle X-ray scattering analysis. − Polystyrene carrying lactose (PVLA) glycopolymers formed isotactic structures and showed strong circular dichroism based on the amphiphilicity and chirality of the polymers . PVLA polymers formed helical rodlike structures with a hydrophobic cavity.…”