Open-channel metal particle superlattices

Yuanwei Li, Wenjie Zhou, Ibrahim Tanriover, Wisnu Hadibrata, Benjamin E. Partridge, Haixin Lin, Xiaobing Hu, Byeongdu Lee, Jianfang Liu, Vinayak P. Dravid, Koray Aydin and Chad A. Mirkin ()
Additional contact information
Yuanwei Li: Northwestern University
Wenjie Zhou: Northwestern University
Ibrahim Tanriover: Northwestern University
Wisnu Hadibrata: Northwestern University
Benjamin E. Partridge: Northwestern University
Haixin Lin: Northwestern University
Xiaobing Hu: Northwestern University
Byeongdu Lee: Argonne National Laboratory
Jianfang Liu: Lawrence Berkeley National Laboratory
Vinayak P. Dravid: Northwestern University
Koray Aydin: Northwestern University
Chad A. Mirkin: Northwestern University

Nature, 2022, vol. 611, issue 7937, 695-701

Abstract: Abstract Although tremendous advances have been made in preparing porous crystals from molecular precursors1,2, there are no general ways of designing and making topologically diversified porous colloidal crystals over the 10–1,000 nm length scale. Control over porosity in this size range would enable the tailoring of molecular absorption and storage, separation, chemical sensing, catalytic and optical properties of such materials. Here, a universal approach for synthesizing metallic open-channel superlattices with pores of 10 to 1,000 nm from DNA-modified hollow colloidal nanoparticles (NPs) is reported. By tuning hollow NP geometry and DNA design, one can adjust crystal pore geometry (pore size and shape) and channel topology (the way in which pores are interconnected). The assembly of hollow NPs is driven by edge-to-edge rather than face-to-face DNA–DNA interactions. Two new design rules describing this assembly regime emerge from these studies and are then used to synthesize 12 open-channel superlattices with control over crystal symmetry, channel geometry and topology. The open channels can be selectively occupied by guests of the appropriate size and that are modified with complementary DNA (for example, Au NPs).

Date: 2022
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DOI: 10.1038/s41586-022-05291-y

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