Modification of Nanoporous Silicon Nitride with Stable and Functional Organic Monolayers.
Modification of Nanoporous Silicon Nitride with Stable and Functional Organic Monolayers.
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用稳定且功能性的有机单层对纳米多孔氮化硅进行改性。
DOI:
10.1021/acs.chemmater.6b05392
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Shestopalov,AlexanderA
中科院分区:
文献类型:
--
作者:
Li,Xunzhi;Johnson,Dean;Ma,Wenchuan;Chung,Henry;Getpreecharsawas,Jirachai;McGrath,JamesL;Shestopalov,AlexanderA
This study describes the formation of functional organic monolayers on thin, nanoporous silicon nitride membranes. We demonstrate that the vapor-phase carbene insertion into the surface C–H bonds can be used to form sub-5 nm molecular coatings on nanoporous materials, which can be further modified with monolayers of polyethylene glycol (PEG) molecules. We investigate composition, thickness, and stability of the functionalized monolayers and the changes in the membrane permeability and pore size distribution. We show that, due to the low coating thickness (∼7 nm), the functionalized membrane retains 80% of the original gas permeance and 40% of the original hydraulic permeability. We also show that the carbene/PEG functionalization is hydrolytically stable for up to 48 h of exposure to water and that it can suppress nonspecific adsorption of the proteins BSA and IgG. Our results suggest that the vapor-phase carbenylation can be used as a complementary technology to the traditional self-assembly and polymer brush chemistries in chemical functionalization of nanoporous materials, which are limited in their ability to serve as stable coatings that do not occlude nanomembrane pores.
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影响因子:
9.5
作者:
J. Winans;Karl J. P. Smith;T. Gaborski;J. Roussie;J. McGrath
通讯作者:
J. Winans;Karl J. P. Smith;T. Gaborski;J. Roussie;J. McGrath
影响因子:
17.1
作者:
Gaborski TR;Snyder JL;Striemer CC;Fang DZ;Hoffman M;Fauchet PM;McGrath JL
通讯作者:
McGrath JL
DOI:
10.1201/9780203741528-2
发表时间:
1993
期刊:
Interface Science and Technology
影响因子:
--
作者:
M. Seah
通讯作者:
M. Seah
影响因子:
15
作者:
Hurley, Patrick T.;Nemanick, E. Joseph;Lewis, Nathan S.
通讯作者:
Lewis, Nathan S.
影响因子:
3.5
作者:
J. Getpreecharsawas;J. McGrath;D. Borkholder
通讯作者:
J. Getpreecharsawas;J. McGrath;D. Borkholder