@article{CuiXiaMitzscherlingetal.2015,
  author    = {Cui, Qianling and Xia, Bihua and Mitzscherling, Steffen and Masic, Admir and Li, Lidong and Bargheer, Matias and Moehwald, Helmuth},
  title     = {Preparation of gold nanostars and their study in selective catalytic reactions},
  series = {Colloids and surfaces : an international journal devoted to the principles and applications of colloid and interface science ; A, Physicochemical and engineering aspects},
  volume    = {465},
  journal   = {Colloids and surfaces : an international journal devoted to the principles and applications of colloid and interface science ; A, Physicochemical and engineering aspects},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0927-7757},
  doi       = {10.1016/j.colsurfa.2014.10.028},
  pages     = {20 -- 25},
  year      = {2015},
  abstract  = {In this work, gold nanostars (AuNSs) with size around 90 nm were prepared through an easy one-step method. They show excellent catalytic activity and large surface-enhanced Raman scattering (SERS) activity at the same time. Surprisingly, they exhibited different catalytic performance on the reduction of aromatic nitro compounds with different substituents on the para position. To understand such a difference, the SERS spectra were recorded, showing that the molecular orientation of reactants on the gold surface were different. We anticipate that this research will help to understand the relationship of the molecular orientation with the catalytic activity of gold nanoparticles.},
  language  = {en}
}
@article{SauterKratzHeucheletal.2021,
  author    = {Sauter, Tilman and Kratz, Karl and Heuchel, Matthias and Lendlein, Andreas},
  title     = {Fiber diameter as design parameter for tailoring the macroscopic shape-memory performance of electrospun meshes},
  series = {Materials and design},
  volume    = {202},
  journal   = {Materials and design},
  publisher = {Elsevier},
  address   = {Amsterdam [u.a.]},
  issn      = {1873-4197},
  doi       = {10.1016/j.matdes.2021.109546},
  pages     = {10},
  year      = {2021},
  abstract  = {Fibrous shape-memory polymer (SMP) scaffolds were investigated considering the fiber as basic microstructural feature. By reduction of the fiber diameter in randomly oriented electrospun polyetherurethane (PEU) meshes from the micro-to the nano-scale, we observed changes in the molecular orientation within the fibers and its impact on the structural and shape-memory performance. It was assumed that a spatial restriction by reduction of the fiber diameter increases molecular orientation along the orientation of the fiber. The stress-strain relation of random PEU scaffolds is initially determined by the 3D arrangement of the fibers and thus is independent of the molecular orientation. Increasing the molecular orientation with decreasing single fiber diameter in scaffolds composed of randomly arranged fibers did not alter the initial stiffness and peak stress but strongly influenced the elongation at break and the stress increase above the Yield point. Reduction of the single fiber diameter also distinctly improved the shape-memory performance of the scaffolds. Fibers with nanoscale diameters (< 100 nm) possessed an almost complete shape recovery, high recovery stresses and fast relaxation kinetics, while the shape fixity was found to decrease with decreasing fiber diameter. Hence, the fiber diameter is a relevant design parameter for SMP.},
  language  = {en}
}