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- Title
Synthesis and Self-Assembly of Shape Amphiphiles Based on POSS-Dendron Conjugates.
- Authors
Yu Shao; Minyuan Ding; Yujie Xu; Fangjia Zhao; Hui Dai; Xia-Ran Miao; Shuguang Yang; Hui Li
- Abstract
Shape has been increasingly recognized as an important factor for self-assembly. In this paper, a series of shape amphiphiles have been built by linking polyhedral oligomeric silsesquioxane (POSS) and a dendron via linkers of different lengths. Three conjugates of octahedral silsesquioxanes (T8-POSS) and dendron are designed and synthesized and are referred to as isobutyl T8-POSS gallic acid derivatives (BPOSS-GAD-1, BPOSS-GAD-2, BPOSS-GAD-3). These samples have been fully characterized by 1H-NMR, 13C-NMR, Fourier transform infrared (FT-IR) spectroscopy and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry to establish their chemical identity and purity. Driven by different interactions between POSS and dendron, ordered superstructure can be found upon self-assembly. The stabilities and structures of these samples are further studied by using differential scanning calorimetry (DSC), small-angle X-ray scattering (SAXS), wide-angle X-ray diffraction (WAXD), and molecular simulations. The results show that their melting points range from 74 °C to 143 °C and the molecular packing schemes in the assemblies can form lamellar structure of BPOSS-GAD-3 as determined by the different linkers.
- Subjects
AMPHIPHILES; SILICONES; GALLIC acid; FOURIER transform infrared spectroscopy; MATRIX-assisted laser desorption-ionization; X-ray diffraction
- Publication
Molecules, 2017, Vol 22, Issue 4, p622
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules22040622