Temperature-responsive supramolecular assembly and morphology of arborescent copolymer micelles with a solvophilic core-solvophobic shell structure

Seok Il Yun, Gerry E. Gadd, Victor Lo, Mario Gauthier, Abdul Munam

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This paper describes the supramolecular assembly of arborescent (dendrigraft) copolymers in solution. The dendritic copolymers remained as unimolecular (nonassociated) micelles in toluene at temperatures above the critical self-assembly temperature (est) but aggregated into supramolecular structures with a diameter of a few micrometers below the est. Small-angle neutron scattering (SANS) measurements in toluene revealed that the P2VP shell of the unimolecular micelles was swollen above the est. The supramolecular aggregates obtained below the est had a spherical topology and a relatively uniform size according to electron microscopy analysis. The temperature- responsive self-assembly process was fully reversible. The est varied with the copolymer concentration and shifted to higher temperatures as the length of the P2VP chains in the shell increased. The self-assembly mechanism reported provides a path to new types of "smart" supramolecular structures.

Original languageEnglish
Pages (from-to)7166-7172
Number of pages7
JournalMacromolecules
Volume41
Issue number19
DOIs
Publication statusPublished - Oct 14 2008

Fingerprint

Micelles
Copolymers
Self assembly
Toluene
Temperature
Neutron scattering
Electron microscopy
Topology

ASJC Scopus subject areas

  • Organic Chemistry
  • Materials Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry

Cite this

Temperature-responsive supramolecular assembly and morphology of arborescent copolymer micelles with a solvophilic core-solvophobic shell structure. / Yun, Seok Il; Gadd, Gerry E.; Lo, Victor; Gauthier, Mario; Munam, Abdul.

In: Macromolecules, Vol. 41, No. 19, 14.10.2008, p. 7166-7172.

Research output: Contribution to journalArticle

@article{f41e0f312c36415e909a4519060e84f9,
title = "Temperature-responsive supramolecular assembly and morphology of arborescent copolymer micelles with a solvophilic core-solvophobic shell structure",
abstract = "This paper describes the supramolecular assembly of arborescent (dendrigraft) copolymers in solution. The dendritic copolymers remained as unimolecular (nonassociated) micelles in toluene at temperatures above the critical self-assembly temperature (est) but aggregated into supramolecular structures with a diameter of a few micrometers below the est. Small-angle neutron scattering (SANS) measurements in toluene revealed that the P2VP shell of the unimolecular micelles was swollen above the est. The supramolecular aggregates obtained below the est had a spherical topology and a relatively uniform size according to electron microscopy analysis. The temperature- responsive self-assembly process was fully reversible. The est varied with the copolymer concentration and shifted to higher temperatures as the length of the P2VP chains in the shell increased. The self-assembly mechanism reported provides a path to new types of {"}smart{"} supramolecular structures.",
author = "Yun, {Seok Il} and Gadd, {Gerry E.} and Victor Lo and Mario Gauthier and Abdul Munam",
year = "2008",
month = "10",
day = "14",
doi = "10.1021/ma801222v",
language = "English",
volume = "41",
pages = "7166--7172",
journal = "Macromolecules",
issn = "0024-9297",
publisher = "American Chemical Society",
number = "19",

}

TY - JOUR

T1 - Temperature-responsive supramolecular assembly and morphology of arborescent copolymer micelles with a solvophilic core-solvophobic shell structure

AU - Yun, Seok Il

AU - Gadd, Gerry E.

AU - Lo, Victor

AU - Gauthier, Mario

AU - Munam, Abdul

PY - 2008/10/14

Y1 - 2008/10/14

N2 - This paper describes the supramolecular assembly of arborescent (dendrigraft) copolymers in solution. The dendritic copolymers remained as unimolecular (nonassociated) micelles in toluene at temperatures above the critical self-assembly temperature (est) but aggregated into supramolecular structures with a diameter of a few micrometers below the est. Small-angle neutron scattering (SANS) measurements in toluene revealed that the P2VP shell of the unimolecular micelles was swollen above the est. The supramolecular aggregates obtained below the est had a spherical topology and a relatively uniform size according to electron microscopy analysis. The temperature- responsive self-assembly process was fully reversible. The est varied with the copolymer concentration and shifted to higher temperatures as the length of the P2VP chains in the shell increased. The self-assembly mechanism reported provides a path to new types of "smart" supramolecular structures.

AB - This paper describes the supramolecular assembly of arborescent (dendrigraft) copolymers in solution. The dendritic copolymers remained as unimolecular (nonassociated) micelles in toluene at temperatures above the critical self-assembly temperature (est) but aggregated into supramolecular structures with a diameter of a few micrometers below the est. Small-angle neutron scattering (SANS) measurements in toluene revealed that the P2VP shell of the unimolecular micelles was swollen above the est. The supramolecular aggregates obtained below the est had a spherical topology and a relatively uniform size according to electron microscopy analysis. The temperature- responsive self-assembly process was fully reversible. The est varied with the copolymer concentration and shifted to higher temperatures as the length of the P2VP chains in the shell increased. The self-assembly mechanism reported provides a path to new types of "smart" supramolecular structures.

UR - http://www.scopus.com/inward/record.url?scp=54849422228&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=54849422228&partnerID=8YFLogxK

U2 - 10.1021/ma801222v

DO - 10.1021/ma801222v

M3 - Article

VL - 41

SP - 7166

EP - 7172

JO - Macromolecules

JF - Macromolecules

SN - 0024-9297

IS - 19

ER -