Highly Efficient Mechanochemical Scission of Silver-Carbene Coordination Polymers

被引：105

作者：

Karthikeyan, S. ^{[1
]}

Potisek, Stephanie L. ^{[1
]}

Piermattei, Alessio ^{[1
]}

Sijbesma, Rint P. ^{[1
]}

机构：

[1] Eindhoven Univ Technol, Lab Macromol & Organ Chem, NL-5600 MB Eindhoven, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 45期

关键词：

D O I：

10.1021/ja806887k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ultrasound-induced scission of silver carbene coordination complexes with polytetrahydrofuran-functionalized N-heterocyclic carbene ligands is reported. In solution, scission is very efficient, with complete conversion within 10 min when the polymers have a molecular weight of 6.7 kDa. The mechanochemical origin of the scission is supported by the molecular weight dependence of the scission rate and by the low reactivity of the silver complex with low molecular weight ligands. The mechanochemical process at room temperature is much faster than thermal scission at 60 C, which has a conversion of 30% in 18 h.

引用

页码：14968 / +

页数：3

共 28 条

[1]

Basedow A.M., 1977, ADV POLYM SCI, V22, P83

[2] Ultrasound-induced site-specific cleavage of azo-functionalized poly(ethylene glycol) [J].

Berkowski, KL ;

Potisek, SL ;

Hickenboth, CR ;

Moore, JS .

MACROMOLECULES, 2005, 38 (22) :8975-8978

[3] Mechanochemistry: The mechanical activation of covalent bonds [J].

Beyer, MK ;

Clausen-Schaumann, H .

CHEMICAL REVIEWS, 2005, 105 (08) :2921-2948

[4]

Casale A., 1978, POLYM STRESS REACTIO

[5] Synthesis of well-defined N-heterocyclic carbene silver(I) complexes [J].

de Frémont, P ;

Scott, NM ;

Stevens, ED ;

Ramnial, T ;

Lightbody, OC ;

Macdonald, CLB ;

Clyburne, JAC ;

Abernethy, CD ;

Nolan, SP .

ORGANOMETALLICS, 2005, 24 (26) :6301-6309

[6]

Dubreuil MF, 1999, MACROMOL RAPID COMM, V20, P383, DOI 10.1002/(SICI)1521-3927(19990701)20:7<383::AID-MARC383>3.0.CO

[7]

2-7

[8] ULTRASONIC DEGRADATION OF POLYVINYLPYRROLIDONE - EFFECT OF PEROXIDE LINKAGES [J].

ENCINA, MV ;

LISSI, E ;

SARASUA, M ;

GARGALLO, L ;

RADIC, D .

JOURNAL OF POLYMER SCIENCE PART C-POLYMER LETTERS, 1980, 18 (12) :757-760

[9] Ag(I) N-heterocyclic carbene complexes: Synthesis, structure, and application [J].

Garrison, JC ;

Youngs, WJ .

CHEMICAL REVIEWS, 2005, 105 (11) :3978-4008

[10] DEGRADATION OF POLYSTYRENE IN SOLUTION BY ULTRASONATION - MOLECULAR-WEIGHT DISTRIBUTION STUDY [J].

GLYNN, PAR ;

VANDERHO.BM .

JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY, 1973, A 7 (08) :1695-1719

← 1 2 3 →