Emergence of complexity in hierarchically organized chiral particles

doi:10.1126/science.aaz7949

GSTDTAP > 气候变化

DOI	10.1126/science.aaz7949
	Emergence of complexity in hierarchically organized chiral particles
	Wenfeng Jiang; Zhi-bei Qu; Prashant Kumar; Drew Vecchio; Yuefei Wang; Yu Ma; Joong Hwan Bahng; Kalil Bernardino; Weverson R. Gomes; Felippe M. Colombari; Asdrubal Lozada-Blanco; Michael Veksler; Emanuele Marino; Alex Simon; Christopher Murray; Sérgio Ricardo Muniz; André F. de Moura; Nicholas A. Kotov
	2020-05-08
发表期刊	Science
出版年	2020
英文摘要	Synthetic colloids are usually smooth, but nature can produce micrometer-scale particles with intricate structure and shape, such as the coccoliths produced by algae. Jiang et al. controlled the self-assembly of gold–cysteine nanoplatelets into a variety of chiral, hierarchically organized colloidal particles by changing the chiral fraction of cysteine and the nucleation temperature. Organic cations created electrostatic repulsions that favored edge assembly of the nanoplatelets, which in turn could create surfaces bearing twisted spikes. Science , this issue p. [642][1] The structural complexity of composite biomaterials and biomineralized particles arises from the hierarchical ordering of inorganic building blocks over multiple scales. Although empirical observations of complex nanoassemblies are abundant, the physicochemical mechanisms leading to their geometrical complexity are still puzzling, especially for nonuniformly sized components. We report the self-assembly of hierarchically organized particles (HOPs) from polydisperse gold thiolate nanoplatelets with cysteine surface ligands. Graph theory methods indicate that these HOPs, which feature twisted spikes and other morphologies, display higher complexity than their biological counterparts. Their intricate organization emerges from competing chirality-dependent assembly restrictions that render assembly pathways primarily dependent on nanoparticle symmetry rather than size. These findings and HOP phase diagrams open a pathway to a large family of colloids with complex architectures and unusual chiroptical and chemical properties. [1]: /lookup/doi/10.1126/science.aaz7949
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/249819
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Wenfeng Jiang,Zhi-bei Qu,Prashant Kumar,et al. Emergence of complexity in hierarchically organized chiral particles[J]. Science,2020.
APA	Wenfeng Jiang.,Zhi-bei Qu.,Prashant Kumar.,Drew Vecchio.,Yuefei Wang.,...&Nicholas A. Kotov.(2020).Emergence of complexity in hierarchically organized chiral particles.Science.
MLA	Wenfeng Jiang,et al."Emergence of complexity in hierarchically organized chiral particles".Science (2020).