Selective DNP Signal Amplification To Probe Structures of Core–Shell Polymer Hybrid Nanoparticles
Selective DNP Signal Amplification To Probe Structures of Core–Shell Polymer Hybrid Nanoparticles
复制标题
选择性 DNP 信号放大探测核壳聚合物杂化纳米粒子的结构
DOI:
10.1021/acs.jpcc.8b07969
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Gutmann
中科院分区:
文献类型:
--
作者:
Schäfer;Vowinkel;Breitzke;Gallei;Gutmann
An efficient approach for the characterization of core–shell polymer hybrid nanoparticles is presented. Selective signal amplification by dynamic nuclear polarization (DNP) is employed to shed more light on the molecular structure of surface sites and shell of the particles. DNP-enhanced29Si solid-state NMR is used to clearly prove the core–shell structure of the nanoparticles as well as the success of their functionalization with low amounts of trimethylsiloxy groups. By combination of DNP-enhanced1H →29Si and1H →13C cross-polarization magic-angle-spinning experiments, differently substituted alkoxysilane moieties, namely, methacryloxypropyltriethoxysilane, 3-methacryloxypropyltriisopropoxysilane, and 3-methacryloxypropyltris(methoxyethoxy)silane, are investigated, revealing various cross-linking capabilities of the particle shell. This knowledge about efficiency of surface functionalization and cross-linking sites strongly influences the application and properties of the core–shell polymer hybrid particles, for instance, as materials for photonic crystals, particle film formation, and coatings. This is of high importance for the design of tailor-made core–shell particle architectures.
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影响因子:
18.3
作者:
Ni, Qing Zhe;Daviso, Eugenio;Can, Thach V.;Markhasin, Evgeny;Jawla, Sudheer K.;Swager, Timothy M.;Temkin, Richard J.;Herzfeld, Judith;Griffin, Robert G.
通讯作者:
Griffin, Robert G.
影响因子:
4.6
作者:
T. Winter;Xiao Su;T. A. Hatton;M. Gallei
通讯作者:
T. Winter;Xiao Su;T. A. Hatton;M. Gallei
DOI:
10.3390/nano7110390
发表时间:
2017-11-15
期刊:
Nanomaterials (Basel, Switzerland)
影响因子:
--
作者:
Vowinkel S;Paul S;Gutmann T;Gallei M
通讯作者:
Gallei M
影响因子:
3.7
作者:
P. Braga-Groszewicz;Q. Wen;A.S. Lilly Thankamony;B.Zhang;U. Kunz;G. Sauer;T. Gutmann;G. Buntkowsky
通讯作者:
G. Buntkowsky
影响因子:
4.3
作者:
Gutmann, Torsten;Liu, Jiquan;Buntkowsky, Gerd
通讯作者:
Buntkowsky, Gerd