title: Pressure-Induced Oriented Attachment Growth of Large-Size Crystals for Constructing 3D Ordered Superstructures.
abstract: Oriented attachment (OA), a nonclassical crystal growth mechanism, provides a powerful bottom-up approach to obtain ordered superstructures, which also demonstrate exciting charge transmission characteristic. However, there is little work observably pronouncing the achievement of 3D OA growth of crystallites with large size (e.g., submicrometer crystals). Here, we report that SnO2 3D ordered superstructures can be synthesized by means of a self-limited assembly assisted by OA in a designed high-pressure solvothermal system. The size of primary building blocks is 200-250 nm, which is significantly larger than that in previous results (normally <10 nm). High pressure plays the key role in the formation of 3D configuration and fusion of adjacent crystals. Furthermore, this high-pressure strategy can be readily expanded to additional materials. We anticipate that the welded structures will constitute an ideal system with relevance to applications in optical responses, lithium ion battery, solar cells, and chemical sensing.
authors.affiliation: State Key Lab of Crystal Materials, Shandong University , Jinan 250100, P. R. China.|Key Lab for Special Functional Aggregated Materials of Education Ministry, School of Chemistry & Chemical Engineering, Shandong University , Jinan 250100, P. R. China.
authors.forename: Jun
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Lab of Crystal Materials, Shandong University , Jinan 250100, P. R. China.|School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Gang
authors.initials: G
authors.lastname: Lian
authors.affiliation: State Key Lab of Crystal Materials, Shandong University , Jinan 250100, P. R. China.
authors.forename: Haibin
authors.initials: H
authors.lastname: Si
authors.affiliation: Key Lab for Special Functional Aggregated Materials of Education Ministry, School of Chemistry & Chemical Engineering, Shandong University , Jinan 250100, P. R. China.
authors.forename: Qilong
authors.initials: Q
authors.lastname: Wang
authors.affiliation: State Key Lab of Crystal Materials, Shandong University , Jinan 250100, P. R. China.
authors.forename: Deliang
authors.initials: D
authors.lastname: Cui
authors.affiliation: School of Materials Science and Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors.forename: Ching-Ping
authors.initials: CP
authors.lastname: Wong
keywords: 3D superstructures; SnO2; crystal growth; oriented attachment; pressure