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Novel Three Dimensional C3v Symmetric Nano-molecules Based on Polyhedral Oligomeric Silsesquioxanes (POSS) Nano-atoms

Mei, Shan
http://rave.ohiolink.edu/etdc/view?acc_num=akron1367361671

Abstract Details

2013, Master of Science, University of Akron, Polymer Science.
The self-assembly of individual building blocks with different shapes into close packed ordered structures is prevalent in nature and has drawn much attention of human for long.1 The close packing of some simple shapes such as sphere and rods has been widely learned and established while the assembly of polyhedral structures is still unsolved and being studied with numerous efforts, of which tetrahedron is one with special interest. However, many previous researches only study the assembly of the building blocks with sizes either too big (tens or hundreds of nanometers) or too small (around one nanometer). Thus, we seek to obtain a size in between by using the newly emerged nano building blocks with precisely defined structures, persistent shapes and outstanding properties, e.g. Polyhedral Oligomeric Silsesquioxane (POSS). We can predict there to be distinctive difference in the self-assembly behavior and structure between the nano-sized molecules and the traditional ones. In this work, two novel claw-like C3v symmetric nano-molecules with different linkages were successfully synthesized by connecting 3 POSS nano-atoms to 1,3,5-Triphenyladmantane. The nano-molecules were carefully designed to ensure they possess enough shape persistent ability and 3-5 nm size, which fills the size gap between traditional small molecules and large colloidal particles. The crystals of the molecules were obtained via solvent evaporation method and the crystal structures would be explored. This work can not only provide us a new way of designing crystals with Nano-sized units but also help us to deepen our understanding of the relationship between molecular structure and crystal structure.
Stephen Cheng, Dr. (Advisor)
Toshikazu Miyoshi, Dr. (Committee Member)
68 p.
Chemistry; Nanoscience
nano molecule; crystal; POSS

Recommended Citations

Citations

  • Mei, S. (2013). Novel Three Dimensional C3v Symmetric Nano-molecules Based on Polyhedral Oligomeric Silsesquioxanes (POSS) Nano-atoms [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367361671

    APA Style (7th edition)

  • Mei, Shan. Novel Three Dimensional C3v Symmetric Nano-molecules Based on Polyhedral Oligomeric Silsesquioxanes (POSS) Nano-atoms. 2013. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1367361671.

    MLA Style (8th edition)

  • Mei, Shan. "Novel Three Dimensional C3v Symmetric Nano-molecules Based on Polyhedral Oligomeric Silsesquioxanes (POSS) Nano-atoms." Master's thesis, University of Akron, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=akron1367361671

    Chicago Manual of Style (17th edition)

akron1367361671
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© 2013, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.