Projects per year
Abstract
The future of materials chemistry will be defined by our ability to precisely arrange components that have considerably larger dimensions and more complex compositions than conventional molecular or macromolecular building blocks. However, exerting structural and constitutional control in the assembly of nanoscale entities presents a considerable challenge. Dynamic covalent nanoparticles are emerging as an attractive category of reaction-enabled solution-processable nanosized building block through which the rational principles of molecular synthetic chemistry can be extended into the nanoscale. From a mixture of two hydrazone-based dynamic covalent nanoparticles with complementary reactivity, specific molecular instructions trigger selective assembly of intimately mixed heteromaterial (Au–Pd) aggregates or materials highly enriched in either one of the two core materials. In much the same way as complementary reactivity is exploited in synthetic molecular chemistry, chemospecific nanoparticle-bound reactions dictate building block connectivity; meanwhile, kinetic regioselectivity on the nanoscale regulates the detailed composition of the materials produced. Selectivity, and hence aggregate composition, is sensitive to several system parameters. By characterizing the nanoparticle-bound reactions in isolation, kinetic models of the multiscale assembly network can be constructed. Despite ignoring heterogeneous physical processes such as aggregation and precipitation, these simple kinetic models successfully link the underlying molecular events with the nanoscale assembly outcome, guiding rational optimization to maximize selectivity for each of the three assembly pathways. With such predictive construction strategies, we can anticipate that reaction-enabled nanoparticles can become fully incorporated in the lexicon of synthetic chemistry, ultimately establishing a synthetic science that manipulates molecular and nanoscale components with equal proficiency.
Original language | English |
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Number of pages | 12 |
Journal | Journal of the American Chemical Society |
Volume | Articles ASAP |
Early online date | 28 Jul 2022 |
DOIs | |
Publication status | E-pub ahead of print - 28 Jul 2022 |
Fingerprint
Dive into the research topics of 'Constitutionally selective dynamic covalent nanoparticle assembly'. Together they form a unique fingerprint.Projects
- 3 Finished
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Light Element Analysis Facility (LEAF): Light Element Analysis Facility (LEAF)
Irvine, J. T. S. (PI), Baker, R. (CoI) & Miller, D. N. (CoI)
5/04/20 → 4/04/23
Project: Standard
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Electon Microscopy: Electon Microscopy for the characterisation and manipulation of advanced function materials and their interfaces at the nanoscale
Irvine, J. T. S. (PI), Baker, R. (CoI) & Zhou, W. (CoI)
1/04/18 → 2/09/20
Project: Standard
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Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale
Samuel, I. D. W. (PI)
1/10/13 → 30/09/23
Project: Standard
Datasets
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Constitutionally selective dynamic covalent nanoparticle assembly (dataset)
Kay, E. R. (Creator), Marro, N. (Creator), Suo, R. (Creator) & Naden, A. B. (Creator), University of St Andrews, 2022
DOI: 10.17630/d6d8befb-3cb3-4bc3-96bd-0a97acfa145d
Dataset
File