Visualizing the efficiency of rapid modular block copolymer construction
Visualizing the efficiency of rapid modular block copolymer construction
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可视化快速模块化嵌段共聚物构建的效率
DOI:
10.1039/c0py00189a
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发表时间:
2011
影响因子:
4.6
通讯作者:
Barner-Kowollik
中科院分区:
文献类型:
--
作者:
Inglis;Barner-Kowollik
The quantification of the efficient ultra-rapid modular synthesis of block copolymersviatwo-dimensional chromatography and a comparably accurate, low-cost deconvolution of size exclusion chromatography traces is reported. Cyclopentadienyl-capped poly(methyl methacrylate) (PMMA, 97% functionality) and a series of pyridin-2-yldithioformate-capped poly(isobornyl acrylate)s (PiBoA, 93–95% functionality) were synthesiszed via atom transfer radical polymerization (ATRP) and reversible addition fragmentation chain transfer (RAFT) polymerization respectively. The corresponding block copolymers were generated by simply stirring a chloroform solution of PMMA, PiBoA and acidic catalyst for 10 min at ambient temperature. The crude block copolymer mixtures were directly analyzed by size exclusion chromatography (SEC), liquid adsorption chromatography at critical conditions (LACCC) and 2D LACCC-SEC to visualize the efficiency of the ultra rapid conjugation reaction. The quantitative analysis via the 2D LACCC-SEC yielded the composition of the block copolymer mixtures which were in excellent agreement with predicted values, thus indicating quantitative conjugation efficiency. In all cases, the crude block copolymer mixtures contained at least 94 wt% block copolymer. Furthermore, a low-cost deconvolution method that may be applied to conventional SEC traces was found to provide comparable composition data.
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DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
A. Alberti;M. Benaglia;M. Guerra;M. Gulea;P. Hapiot;M. Laus;D. Macciantelli;S. Masson*;A. Postma;K. Sparnacci
通讯作者:
K. Sparnacci
DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
H. Pasch;Y. Gallot;B. Trathnigg
通讯作者:
B. Trathnigg
DOI:
--
发表时间:
1988
期刊:
影响因子:
--
作者:
G. Glöckner;M. Stickler;W. Wunderlich
通讯作者:
W. Wunderlich
影响因子:
29.4
作者:
Pauloehrl, Thomas;Inglis, Andrew J.;Barner-Kowollik, Christopher
通讯作者:
Barner-Kowollik, Christopher
影响因子:
5.5
作者:
Sandy P. S. Koo;Thomas Junkers;C. Barner‐Kowollik
通讯作者:
C. Barner‐Kowollik