TEMPO Containing Polynorbornene Block Copolymers Prepared via ROMP and Their use as Scaffolds in Sol/Gel-Process

被引：4
|
作者：
Kir, Onur [1 ]
Huesing, Nicola [2 ]
Enke, Dirk [3 ]
Binder, Wolfgang H. [1 ]
机构：
[1] Univ Halle Wittenberg, Fac Nat Sci 2, Inst Chem Macromol Chem, TGZ 3, Heinrich Damerow Str 4, D-06120 Halle, Saale, Germany
[2] Uni Ulm, Inst Anorganische Chemie 1, Albert Einstein Alle, D-89081 Ulm, Germany
[3] Univ Halle Wittenberg, Inst Chem Tech, D-06099 Halle, Germany
来源：
OLEFIN METATHESIS | 2010年 / 293卷
关键词：
block copolymers; ROMP; sol/gel; TEMPO; titanium dioxide; OLEFIN METATHESIS; CATALYSTS;
D O I：
10.1002/masy.200900023
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Block copolymers (B50T30 and B21T30) containing free nitroxide-radicals with two different chain lengths derived from the monomers (+/-) endo,exo-bicyclo[2,2,1]-hept-5-ene-2,3-dicarboxylic acid-bis-O-tert.-butyl ester (monomer B) and (+/-)endo,exo-bicyclo[2,2,1]-hept-5-ene-2,3-dicarboxylic acid-bis-O-2,2,6,6-piperidinoxyl-ester (monomer T) were polymerized via ring opening metathesis polymerization (ROMP). The ter.-butyl-moiety in block B could then be hydrolyzed to obtain amphiphilic block copolymers which were used as scaffolds in subsequent sol/gel-process. The resulting block copolymers were analyzed via small angle X-Ray scattering (SAXS) to investigate microphase separation and the sol/gel products were analyzed by X-Ray Diffraction (XRD) to prove the formation of ordered TiO2 crystals.
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页码：67 / +
页数：2
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