Synthesis and Self-Assembly of Shape Amphiphiles Based on POSS-Dendron Conjugates
AbstractShape 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. View Full-Text
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Shao, Y.; Ding, M.; Xu, Y.; Zhao, F.; Dai, H.; Miao, X.-R.; Yang, S.; Li, H. Synthesis and Self-Assembly of Shape Amphiphiles Based on POSS-Dendron Conjugates. Molecules 2017, 22, 622.
Shao Y, Ding M, Xu Y, Zhao F, Dai H, Miao X-R, Yang S, Li H. Synthesis and Self-Assembly of Shape Amphiphiles Based on POSS-Dendron Conjugates. Molecules. 2017; 22(4):622.Chicago/Turabian Style
Shao, Yu; Ding, Minyuan; Xu, Yujie; Zhao, Fangjia; Dai, Hui; Miao, Xia-Ran; Yang, Shuguang; Li, Hui. 2017. "Synthesis and Self-Assembly of Shape Amphiphiles Based on POSS-Dendron Conjugates." Molecules 22, no. 4: 622.
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