葡萄叶中有机骨架调控草酸钙一水合物介晶的双手性构型

IF 2.6 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

CrystEngComm Pub Date : 2025-04-23 DOI:10.1039/D5CE00259A

Ryosuke Tanaka, Hiroto Watanabe, Yuya Oaki and Hiroaki Imai

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引用次数: 0

摘要

生物源一水草酸钙（COM, CaC2O4·H2O）针状晶体（raphides）在葡萄叶片中呈束状排列，顶端为尖，尾部为二。在这项工作中，研究了具体的层次结构在微米和纳米尺度。Raphides的宏观特征是具有类似于COM的双手性构型，由有机中心壁隔开，并被有机包膜覆盖。raphides的COM具有中晶结构，由直径约10 nm的小晶粒组成，具有扭曲的单晶性质。初步产生的有机框架被认为是在特定细胞中构建raphide来控制COM的特定晶体生长。

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Twin-like chiral configuration of a calcium oxalate monohydrate mesocrystal regulated with an organic framework in grape leaves†

Biogenic calcium oxalate monohydrate (COM, CaC₂O₄·H₂O) needle crystals (raphides) having a pointed tip and two tails are arranged as a bundle in grape leaves. In this work, the specific hierarchical architecture was studied at the micrometric and nanometric scales. Raphides were macroscopically characterized as having a twin-like chiral configuration of COM divided by an organic central wall and covered with an organic enveloping membrane. The COM of the raphides has a mesocrystalline structure that consists of small grains ∼10 nm in diameter with a distorted single-crystal nature. The initially produced organic framework was suggested to control the specific crystal growth of COM under the construction of a raphide in a specific cell.

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