NDLI: Spontaneously amplified homochiral organic–inorganic nano-helix complexes via self-proliferation

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Spontaneously amplified homochiral organic–inorganic nano-helix complexes via self-proliferation

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Back cover

Nanoscale Vol - 5 Issue - 6

Nanoscale Vol - 5 Issue - 5

Nanoscale Vol - 5 Issue - 4

Nanoscale Vol - 5 Issue - 3

Spontaneously amplified homochiral organic–inorganic nano-helix complexes via self-proliferation

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Li Liu, Xiang-Yang Xu, Xurong Zhai, Halei Tang, Ruikang Quan, Yan
Copyright Year	2013
Abstract	Most spiral coiled biomaterials in nature, such as gastropod shells, are homochiral, and the favoured chiral feature can be precisely inherited. This inspired us that selected material structures, including chirality, could be specifically replicated into the self-similar populations; however, a physicochemical understanding of the material-based heritage is unknown. We study the homochirality by using calcium phosphate mineralization in the presence of racemic amphiphilic molecules and biological protein. The organic–inorganic hybrid materials with spiral coiling characteristics are produced at the nanoscale. The resulted helixes are chiral with the left- and right-handed characteristics, which are agglomerated hierarchically to from clusters and networks. It is interesting that each cluster or network is homochiral so that the enantiomorphs can be separated readily. Actually, each homochiral architecture is evolved from an original chiral helix, demonstrating the heritage of the matrix chirality during the material proliferation under a racemic condition. By using the Ginzburg–Landaue expression we find that the chiral recognition in the organic–inorganic hybrid formation may be determined by a spontaneous chiral separation and immobilization of asymmetric amphiphilic molecules on the mineral surface, which transferred the structural information from the mother matrix to the descendants by an energetic control. This study shows how biomolecules guide the selective amplification of chiral materials via spontaneous self-replication. Such a strategy can be applied generally in the design and production of artificial materials with self-similar structure characteristics.
Starting Page	3006
Ending Page	3012
Page Count	7
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	5
Issue Number	7
Journal	Nanoscale
DOI	10.1039/c3nr33782k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Mineral Homochirality Calcium phosphate Ginzburg Heredity Chirality (mathematics) Gastropoda Self-replication Protein Racemic mixture Chirality Amphiphile Extracellular matrix Biomaterial Self-similarity
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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