國立高雄大學圖資館 |

Language: English

Back

New strategies in metal-catalyzed li...

Grigoras, Cristian.

New strategies in metal-catalyzed living radical polymerization.

Record Type:	Electronic resources : Monograph/item
Title/Author:	New strategies in metal-catalyzed living radical polymerization.
Author:	Grigoras, Cristian.
Description:	243 p.
Notes:	Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 0924.
Notes:	Supervisor: Virgil Percec.
Contained By:	Dissertation Abstracts International66-02B.
Subject:	Chemistry, Polymer.
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165685
ISBN:	0542005816

New strategies in metal-catalyzed living radical polymerization.
Grigoras, Cristian.

New strategies in metal-catalyzed living radical polymerization. - 243 p.

Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 0924.

Thesis (Ph.D.)--University of Pennsylvania, 2005.

Based on application of the metal-catalyzed living radical polymerization (LRP) technique we have identified new classes of universal initiators and developed new synthetic strategies. Investigations of universal initiators indicate that arylsulfonyl bromides, arylsulfonyl iodides, N-Chloro amides, N-Chloro lactams, N-Chloro carbamates, N-Chloro imides and N-Chloro sulfonamides are successfully initiating the metal-catalyzed LRP of commercial monomers including methacrylates, styrenes and acrylates. By combining polymer synthesis with organic transformations, we demonstrated a novel concept, TERMINI, derived from a TERminator M&barbelow;ultifunctional INItiator. Combination of highly selective and quantitative organic transformations with metal-catalyzed LRP of commercial monomer methyl methacrylate (MMA) has allowed us to generate dendritic macromolecules. Several modifications of the TERMINI method accelerated the synthesis. New techniques were developed for the construction of dendritic macromolecules with different degrees of compactness and derived from a single monomer. The TERMINI concept gives unprecedented architectural control and access to a panoply of functional materials.

ISBN: 0542005816Subjects--Topical Terms:

227045
Chemistry, Polymer.

New strategies in metal-catalyzed living radical polymerization.
LDR:03188nmm _2200277 _450 001 167336
005 20061005085900.5
008 090528s2005 eng d
020 $a 0542005816
035 $a 00197952
040 $a UnM $c UnM
100 0 $a Grigoras, Cristian. $3 237482
245 1 0 $a New strategies in metal-catalyzed living radical polymerization.
300 $a 243 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 0924.
500 $a Supervisor: Virgil Percec.
502 $a Thesis (Ph.D.)--University of Pennsylvania, 2005.
520 # $a Based on application of the metal-catalyzed living radical polymerization (LRP) technique we have identified new classes of universal initiators and developed new synthetic strategies. Investigations of universal initiators indicate that arylsulfonyl bromides, arylsulfonyl iodides, N-Chloro amides, N-Chloro lactams, N-Chloro carbamates, N-Chloro imides and N-Chloro sulfonamides are successfully initiating the metal-catalyzed LRP of commercial monomers including methacrylates, styrenes and acrylates. By combining polymer synthesis with organic transformations, we demonstrated a novel concept, TERMINI, derived from a TERminator M&barbelow;ultifunctional INItiator. Combination of highly selective and quantitative organic transformations with metal-catalyzed LRP of commercial monomer methyl methacrylate (MMA) has allowed us to generate dendritic macromolecules. Several modifications of the TERMINI method accelerated the synthesis. New techniques were developed for the construction of dendritic macromolecules with different degrees of compactness and derived from a single monomer. The TERMINI concept gives unprecedented architectural control and access to a panoply of functional materials.
520 # $a Further exploitation of the arylsulfonyl chlorides to initiate LRP of MMA has been investigated in the presence of room temperature ionic liquids (RTIL). Polymerizations catalyzed by self-regulated Cu2O/bpy catalyst has provided a process that combines all the elements of a perfect metal-catalyzed LRP: fast process, moderate temperatures, low catalyst concentrations (5--10%), controlled polymerization (low molecular weight distribution polymer, control of molecular weight and functionality), facile catalyst removal from the polymer, and use of environmentally sound solvent.
520 # $a The renaissance of radical polymerization in recent years was driven by new synthetic strategies, mechanistic studies, and the growing demand for functionalized, well-defined materials for applications ranging from coatings to biomaterials. For precision polymer synthesis, the most used method is "living" polymerization that provides control over the molecular weight, molecular weight distributions, chain end functionality and architecture.
590 $a School code: 0175.
650 # 0 $a Chemistry, Polymer. $3 227045
690 $a 0495
710 0 # $a University of Pennsylvania. $3 212781
773 0 # $g 66-02B. $t Dissertation Abstracts International
790 $a 0175
790 1 0 $a Percec, Virgil, $e advisor
791 $a Ph.D.
792 $a 2005
856 4 0 $u http://libsw.nuk.edu.tw:81/login?url=http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165685 $z http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165685