ChemInform Abstract: α-Chymotrypsin-Catalyzed Segment Condensations via the Kinetically Controlled Approach Using Carbamoylmethyl Esters as Acyl Donors in Organic Media.

ChemInform ◽  
2010 ◽  
Vol 33 (25) ◽  
pp. no-no
Author(s):  
Toshifumi Miyazawa ◽  
Eiichi Ensatsu ◽  
Makoto Hiramatsu ◽  
Ryoji Yanagihara ◽  
Takashi Yamada
Keyword(s):  
Organic Media ◽  
Kinetically Controlled ◽  
Acyl Donors ◽  
Kinetically Controlled Approach

Utilization of Proteases fromAspergillusSpecies for Peptide Synthesis via the Kinetically Controlled Approach

2003 ◽  
Vol 21 (3) ◽  
pp. 93-100 ◽  
Author(s):  
Toshifumi Miyazawa ◽  
Makoto Hiramatsu ◽  
Takashi Murashima ◽  
Takashi Yamada
Keyword(s):  
Peptide Synthesis ◽  
Kinetically Controlled ◽  
Kinetically Controlled Approach

Supramolecular Assembly of U(IV) Clusters and Superatoms

2020 ◽  
Author(s):  
Ian Colliard ◽  
Gregory Morrosin ◽  
Hans-Conrad zur Loye ◽  
May Nyman
Keyword(s):  
Quantum Dots ◽  
Supramolecular Assembly ◽  
Emergent Properties ◽  
Organic Media ◽  
Body Centered Cubic ◽  
Cluster Anions ◽  
Charge Balance ◽  
Interpenetrating Networks ◽  
Hierarchical Assembly ◽  
Two Parameters

Superatoms are nanometer-sized molecules or particles that can form ordered lattices, mimicking their atomic counterparts. Hierarchical assembly of superatoms gives rise to emergent properties in superlattices of quantum-dots, p-block clusters, and fullerenes. Here, we introduce a family of uranium-oxysulfate cluster anions whose hierarchical assembly in water is controlled by two parameters; acidity and the countercation. In acid, larger Ln<sup>III</sup> (Ln=La-Ho) link hexamer (U<sub>6</sub>) oxoclusters into body-centered cubic frameworks, while smaller Ln<sup>III</sup> (Ln=Er-Lu &Y) promote linking of fourteen U<sub>6</sub>-clusters into hollow superclusters (U<sub>84</sub> superatoms). U<sub>84</sub> assembles into superlattices including cubic-closest packed, body-centered cubic, and interpenetrating networks, bridged by interstitial countercations, and U<sub>6</sub>-clusters. Divalent transition metals (TM=Mn<sup>II </sup>and Zn<sup>II</sup>), with no added acid, charge-balance and promote the fusion of 10 U<sub>6</sub> and 10 U-monomers into a wheel–shaped cluster (U<sub>70</sub>). Dissolution of U<sub>70</sub> in organic media reveals (by small-angle Xray scattering) that differing supramolecular assemblies are accessed, controlled by TM-linking of U<sub>70</sub>-clusters. <br>

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