Solid State and Solution Self-Assembly of Helical Polypeptides Tethered to Polyhedral Oligomeric Silsesquioxanes

Autor:	Shiao-Wei Kuo, Feng-Chih Chang, Kwang-Un Jeong, Wu-Jang Huang, Hsin-Fang Lee
Rok vydání:	2009
Předmět:	Polymers and Plastics Chemistry Hydrogen bond Organic Chemistry Ring-opening polymerization Silsesquioxane Inorganic Chemistry chemistry.chemical_compound Polymerization Intramolecular force Polymer chemistry Materials Chemistry Copolymer Self-assembly Macromolecule
Zdroj:	Macromolecules. 42:1619-1626
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma802370y
Popis:	New macromolecular self-assembling building blocks, polyhedral oligo- silsesquioxane (POSS)- helical polypeptide copolymers, have been synthesized through the ring-opening polymerization (ROP) of γ-benzyl- L-glutamate N-carboxyanhydride (γ-Bn-Glu NCA) using aminopropyl isobutyl-POSS as a macroinitiator. The incorporation of POSS units at the chain ends of PBLG moieties has two important effects: allowing intramolecular hydrogen bonding between the POSS and PBLG units to enhance the latter's R-helical conformations in the solid state and preventing the aggregation of nanoribbons through the POSS blocks' protrusion from the ribbons to allow the formation of clear gels in solution.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::28e2d1bcbe22bf131d7fab5db4cf2d11 https://doi.org/10.1021/ma802370y Zobrazit plný text záznamu