TY - JOUR
T1 - A recyclable supramolecular membrane for size-selective separation of nanoparticles
AU - Krieg, Elisha
AU - Weissman, Haim
AU - Shirman, Elijah
AU - Shimoni, Eyal
AU - Rybtchinski, Boris
N1 - Funding Information: This work was supported by grants from the Israel Science Foundation, the Minerva Foundation, the Gerhardt M.J. Schmidt Minerva Center for Supramolecular Architectures, and the Helen and Martin Kimmel Center for Molecular Design. The EM studies were conducted at the Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging (Weizmann Institute). B.R. holds the Abraham and Jennie Fialkow Career Development Chair. The authors thank T. Shirman for help with gold nanoparticle synthesis and C. Shahar for assistance with TEM measurements. Thanks also go to D. Milstein for critical reading of the manuscript.
PY - 2011/3
Y1 - 2011/3
N2 - Most practical materials are held together by covalent bonds, which are irreversible. Materials based on noncovalent interactions can undergo reversible self-assembly, which offers advantages in terms of fabrication, processing and recyclability, but the majority of noncovalent systems are too fragile to be competitive with covalent materials for practical applications, despite significant attempts to develop robust noncovalent arrays. Here, we report nanostructured supramolecular membranes prepared from fibrous assemblies in water. The membranes are robust due to strong hydrophobic interactions, allowing their application in the size-selective separation of both metal and semiconductor nanoparticles. A thin (12 μm) membrane is used for filtration (∼5 nm cutoff), and a thicker (45 μm) membrane allows for size-selective chromatography in the sub-5 nm domain. Unlike conventional membranes, our supramolecular membranes can be disassembled using organic solvent, cleaned, reassembled and reused multiple times.
AB - Most practical materials are held together by covalent bonds, which are irreversible. Materials based on noncovalent interactions can undergo reversible self-assembly, which offers advantages in terms of fabrication, processing and recyclability, but the majority of noncovalent systems are too fragile to be competitive with covalent materials for practical applications, despite significant attempts to develop robust noncovalent arrays. Here, we report nanostructured supramolecular membranes prepared from fibrous assemblies in water. The membranes are robust due to strong hydrophobic interactions, allowing their application in the size-selective separation of both metal and semiconductor nanoparticles. A thin (12 μm) membrane is used for filtration (∼5 nm cutoff), and a thicker (45 μm) membrane allows for size-selective chromatography in the sub-5 nm domain. Unlike conventional membranes, our supramolecular membranes can be disassembled using organic solvent, cleaned, reassembled and reused multiple times.
UR - http://www.scopus.com/inward/record.url?scp=79952407681&partnerID=8YFLogxK
U2 - 10.1038/nnano.2010.274
DO - 10.1038/nnano.2010.274
M3 - مقالة
C2 - 21258332
SN - 1748-3387
VL - 6
SP - 141
EP - 146
JO - Nature Nanotechnology
JF - Nature Nanotechnology
IS - 3
ER -