Journal
CCS CHEMISTRY
Volume 3, Issue 5, Pages 1434-1444Publisher
CHINESE CHEMICAL SOC
DOI: 10.31635/ccschem.020.202000338
Keywords
self-assembly; Frank-Kasper phase; quasicrystal; shape amphiphile; constituent isomer
Categories
Funding
- Key-Area Research and Development Program of Guangdong Province [2019B010941002, 2020B010182002]
- National Natural Science Foundation of China [71890871, U1832220]
- Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices [2019B121203003]
- Guangdong Project [2016ZT06C322]
- Fundamental Research Funds for the Central Universities [2019JQ05]
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Subtle chemical differences in constituent molecules can significantly affect their spatial arrangements, properties, and functions, as shown in this study on nanosized shape amphiphiles; the authors report two sets of nanosized shape amphiphiles with slight differences in linkers that self-assemble into unconventional spherical packing structures.
Naturally, subtle variations in the chemical structures of constituent molecules may significantly affect their multiscale spatial arrangements, properties, and functions. Deceptively simple spherical assemblies supply an ideal platform to investigate how subtle chemical differences affect hierarchically assembled structures. Here, the authors report two sets of nanosized shape amphiphiles, which were constructed by a triphenylene core and six polyhedral oligomeric silsesquioxane cages peripherally grafted through linkers. The slight differences in these samples are merely several methylene units in their linkers, including several pairs of constituent isomers. These nanosized shape amphiphiles self-assemble into a variety of unconventional spherical packing structures, which include the FrankKasper s phase and dodecagonal quasicrystal. Several types of unconventional phase transitions were systematically investigated. The authors alternated the conventional columnar phases of discotic molecules to unconventional spherical packing phases. These unconventional structures may shed light into discovering discotic mesogens-based materials with new properties and functions. [GRAPHICS] .
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