dc.contributor.author |
Roy, Syamantak
|
|
dc.contributor.author |
Suresh, Venkata M.
|
|
dc.contributor.author |
Maji, Tapas Kumar
|
|
dc.date.accessioned |
2017-01-24T06:25:43Z |
|
dc.date.available |
2017-01-24T06:25:43Z |
|
dc.date.issued |
2016 |
|
dc.identifier.citation |
Roy, S.; Suresh, V. M.; Maji, T. K., Self-cleaning MOF: realization of extreme water repellence in coordination driven self-assembled nanostructures. Chemical Science 2016, 7 (3), 2251-2256 http://dx.doi.org/10.1039/c5sc03676c |
en_US |
dc.identifier.citation |
Chemical Science |
en_US |
dc.identifier.citation |
7 |
en_US |
dc.identifier.citation |
3 |
en_US |
dc.identifier.issn |
2041-6520 |
|
dc.identifier.uri |
https://libjncir.jncasr.ac.in/xmlui/10572/2153 |
|
dc.description |
Open Access |
en_US |
dc.description.abstract |
Bio-inspired self-cleaning surfaces have found industrial applications in oil-water separation, stain resistant textiles, anti-biofouling paints in ships etc. Interestingly, self-cleaning metal-organic framework (MOF) materials having high water contact angles and corrosion resistance have not been realized so far. To address this issue, we have used the fundamentals of self-assembly to expose hydrophobic alkyl chains on a MOF surface. This decreases the surface free energy and hence increases hydrophobicity. Coordination directed self-assembly of dialkoxyoctadecyl-oligo-(p-phenyleneethynylene) dicarboxylate (OPE-C-18) with Zn-II in a DMF/H2O mixture leads to a three dimensional supramolecular porous framework {Zn(OPE-C-18)center dot 2H(2)O} (NMOF-1) with nanobelt morphology. Inherently superhydrophobic and self-cleaning NMOF-1 has high thermal and chemical stability. The periodic arrangement of 1D Zn-OPE-C-18 chains with octadecyl alkyl chains projecting outward reduces the surface free energy leading to superhydrophobicity in NMOF-1 (contact angle: 160-162 degrees). The hierarchical surface structure thus generated, enables NMOF-1 to mimic the lotus leaf in its self-cleaning property with an unprecedented tilt angle of 2 degrees. Additionally, superhydrophobicity remains intact over a wide pH range (1-9) and under high ionic concentrations. We believe that such a development in this field will herald a new class of materials capable of water repellent applications. |
en_US |
dc.description.uri |
2041-6539 |
en_US |
dc.description.uri |
http://dx.doi.org/10.1039/c5sc03676c |
en_US |
dc.language.iso |
English |
en_US |
dc.publisher |
Royal Society of Chemistry |
en_US |
dc.rights |
@Royal Society of Chemistry, 2016 |
en_US |
dc.subject |
Chemistry |
en_US |
dc.subject |
Metal-Organic Frameworks |
en_US |
dc.subject |
Superhydrophobic Surfaces |
en_US |
dc.subject |
Separation |
en_US |
dc.subject |
Polymer |
en_US |
dc.subject |
Wettability |
en_US |
dc.subject |
Coatings |
en_US |
dc.subject |
Design |
en_US |
dc.subject |
Films |
en_US |
dc.subject |
Architecture |
en_US |
dc.subject |
Lithography |
en_US |
dc.title |
Self-cleaning MOF: realization of extreme water repellence in coordination driven self-assembled nanostructures |
en_US |
dc.type |
Article |
en_US |