Colloids with valence and specific directional bonding

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Colloids with valence and specific directional bonding

#1  Postby Darwinsbulldog » Nov 01, 2012 12:43 am

Wang, Y., Y. Wang, et al. (2012). "Colloids with valence and specific directional bonding." Nature 491(7422): 51-55.
The ability to design and assemble three-dimensional structures from colloidal particles is limited by the absence of specific directional bonds. As a result, complex or low-coordination structures, common in atomic and molecular systems, are rare in the colloidal domain. Here we demonstrate a general method for creating the colloidal analogues of atoms with valence: colloidal particles with chemically distinct surface patches that imitate hybridized atomic orbitals, including sp, sp2, sp3, sp3d, sp3d2 and sp3d3. Functionalized with DNA with single-stranded sticky ends, patches on different particles can form highly directional bonds through programmable, specific and reversible DNA hybridization. These features allow the particles to self-assemble into |[lsquo]|colloidal molecules|[rsquo]| with triangular, tetrahedral and other bonding symmetries, and should also give access to a rich variety of new microstructured colloidal materials.

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http://dx.doi.org/10.1038/nature11564

If you don't have a subs to Nature-starve yourself for a week, and use the money saved to get one. Seriously. :thumbup:
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Re: Colloids with valence and specific directional bonding

#2  Postby Acetone » Nov 05, 2012 4:29 am

Yeah, I read about this yesterday, pretty amazing stuff. I agree it's worth getting the article.
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Re: Colloids with valence and specific directional bonding

#3  Postby Darwinsbulldog » Nov 05, 2012 9:20 am

Acetone wrote:Yeah, I read about this yesterday, pretty amazing stuff. I agree it's worth getting the article.



Ahgrrhh! I forgot to mention, the 4 vids are free :doh: So is the Supp pdf. Sorry.
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Re: Colloids with valence and specific directional bonding

#4  Postby Calilasseia » Jan 26, 2013 9:34 pm

Psst ... you can read the full PDF online here, but there's restrictions on downloading.
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