Supramolecular Pseudorotaxane Graft Copolymer from a Crown Ether Polyester and a Complementary Paraquat-Terminated Polystyrene Guest

被引：65

作者：

Lee, Minjae ^{[1
]}

Moore, Robert B. ^{[1
]}

Gibson, Harry W. ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA

来源：

MACROMOLECULES | 2011年 / 44卷 / 15期

基金：

美国国家科学基金会;

关键词：

MACROCYCLIC POLYMERS; POLYROTAXANES; ROTAXANE)S; HOST; POLYURETHANE; COMPLEXATION; MOLECULES; CHEMISTRY; BLOCK; STAR;

D O I：

10.1021/ma201241t

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The self-assembly of a polyester containing crown ether host repeat units and a paraquat-terminated polystyrene guest provides a supramolecular pseudorotaxane graft copolymer based on the bis(m-phenylene)-32-crown-10/ paraquat recognition motif. NMR chemical shift changes in solution gave evidence of the complexation of the crown ether and paraquat moieties. Solutions of the two polymers at 1:1 host:guest stoichiometry (crown ether:paraquat), but only 3 mass % crown polymer, possessed an intrinsic viscosity 1.9 times that of the paraquat-terminated polystyrene and 2.7 times that of the polyester. Differential scanning calorimetry revealed only one glass transition for a solid from evaporation of a solution at 3:1 host:guest (crown ether:paraquat) stoichiometry; this indicated complete phase mixing, as confirmed by optical microscopy and small-angle laser light scattering.

引用

页码：5987 / 5993

页数：7

共 88 条

[1] GRAFT-COPOLYAMIDE MOLECULAR COMPOSITES [J].

AHARONI, SM .

JOURNAL OF APPLIED POLYMER SCIENCE, 1994, 53 (12) :1615-1629

[2] COMPLEXATION OF PARAQUAT AND DIQUAT BY A BISMETAPHENYLENE-32-CROWN-10 DERIVATIVE [J].

ALLWOOD, BL ;

SHAHRIARIZAVAREH, H ;

STODDART, JF ;

WILLIAMS, DJ .

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1987, (14) :1058-1061

[3]

Araki J., 2008, SOFT MATTER, V4, P245

[4]

Beves JE, 2010, NAT CHEM, V2, P708, DOI [10.1038/nchem.745, 10.1038/NCHEM.745]

[5] A new cryptand: Synthesis and complexation with paraquat [J].

Bryant, WS ;

Jones, JW ;

Mason, PE ;

Guzei, I ;

Rheingold, AL ;

Fronczek, FR ;

Nagvekar, DS ;

Gibson, HW .

ORGANIC LETTERS, 1999, 1 (07) :1001-1004

[6] Compatibilizing effect of a graft copolymer on bacterial poly (3-hydroxybutyrate)/poly (methyl methacrylate) blends [J].

Ceccorulli, G ;

Scandola, M ;

Adamus, G .

JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2002, 40 (13) :1390-1399

[7] Transition-metal-complexed catenanes and rotaxanes in motion: Towards molecular machines [J].

Collin, JP ;

Heitz, V ;

Sauvage, JP .

MOLECULAR MACHINES, 2005, 262 :29-62

[8] Catenanes and threaded systems: from solution to surfaces [J].

Coronado, Eugenio ;

Gavina, Pablo ;

Tatay, Sergio .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (06) :1674-1689

[9] Active metal template synthesis of rotaxanes, catenanes and molecular shuttles [J].

Crowley, James D. ;

Goldup, Stephen M. ;

Lee, Ai-Lan ;

Leigh, David A. ;

McBurney, Roy T. .

CHEMICAL SOCIETY REVIEWS, 2009, 38 (06) :1530-1541

[10] MACROCYCLIC POLYMERS .2. SYNTHESIS OF POLY(AMIDE CROWN ETHER)S BASED ON BIS(5-CARBOXY-1,3-PHENYLENE)-32-CROWN-10 - NETWORK FORMATION THROUGH THREADING [J].

DELAVIZ, Y ;

GIBSON, HW .

MACROMOLECULES, 1992, 25 (19) :4859-4862

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