A Filled‐Honeycomb‐Structured Crystal Formed by Self‐Assembly of a Janus Polyoxometalate–Silsesquioxane (POM–POSS) Co‐Cluster. (13th November 2015)

• Record Type: Journal Article
• Authors: Ma, Chi; Wu, Han; Huang, Zi‐Han; Guo, Ruo‐Hai; Hu, Min‐Biao; Kübel, Christian; Yan, Li‐Tang; Wang, Wei
• Is Part Of: Angewandte Chemie. Volume 127:Number 52(2015)
• Page Start: 15925
• Page End: 15930
• Publication Date: 2015-11-13
• Subjects: Janus‐Kocluster -- Nanomaterialien -- Polyoxometallate -- Selbstorganisation -- Silsesquioxane; Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201507237
• Languages: English
• ISSNs: 0044-8249

Abstract

Abstract: Clusters with diverse structures and functions have been used to create novel cluster‐assembled materials (CAMs). Understanding their self‐assembly process is a prerequisite to optimize their structure and function. Herein, two kinds of unlike organo‐functionalized inorganic clusters are covalently linked by a short organic tether to form a dumbbell‐shaped Janus co‐cluster. In a mixed solvent of acetonitrile and water, it self‐assembles into a crystal with a honeycomb superstructure constructed by hexagonal close‐packed cylinders of the smaller cluster and an orderly arranged framework of the larger cluster. Reconstruction of these structural features via coarse‐grained molecular simulations demonstrates that the cluster crystallization and the nanoscale phase separation between the two incompatible clusters synergistically result in the unique nano‐architecture. Overall, this work opens up new opportunities for generating novel CAMs for advanced future applications. Abstract : Unausgewogene Gewichtsverteilung : Größenasymmetrie und Janus‐Charakteristika lenken die Selbstorganisation eines hantelförmigen Koclusters aus einer POM‐Einheit (violett), einer POSS‐Einheit (grün) und einer organischen Brückeneinheit in Lösung. Es entstehen Kristalle mit einer Überstruktur aus gefüllten Waben.