Luminescent gold nanoclusters for bioimaging applications

• Nonappa

Beilstein J. Nanotechnol. 2020, 11, 533–546, doi:10.3762/bjnano.11.42

• that of the in vivo imaging at 5 h post-injection. Guevel et al. reported AuNCs stabilized by zwitterionic molecules for subcutaneous and orthotropic glioblastoma mice models [99]. Two types of Au25 NCs were used, namely, glutathione-capped [Au25(SG)18] and lipoic acid-sulfobetaine zwitterion-capped

Small protein sequences can induce cellular uptake of complex nanohybrids

• Jan-Philip Merkl,
• Malak Safi,
• Christian Schmidtke,
• Fadi Aldeek,
• Johannes Ostermann,
• Tatiana Domitrovic,
• Sebastian Gärtner,
• John E. Johnson,
• Horst Weller and
• Hedi Mattoussi

Beilstein J. Nanotechnol. 2019, 10, 2477–2482, doi:10.3762/bjnano.10.238

• route which relies on direct metal-coordination interactions. Here, amine-to-gold and imidazole-to-gold coordination were applied to couple QDs and AuNPs, or to conjugate His6-MBP-γ onto the AuNPs, respectively [8][23]. AuNPs stabilized with zwitterion-modified lipoic acid (LA-ZW-AuNPs) were selected

Hybrid Au@alendronate nanoparticles as dual chemo-photothermal agent for combined cancer treatment

• Anouchka Plan Sangnier,
• Romain Aufaure,
• Laurence Motte,
• Claire Wilhelm,
• Erwann Guenin and
• Yoann Lalatonne

Beilstein J. Nanotechnol. 2018, 9, 2947–2952, doi:10.3762/bjnano.9.273

• estimated values for other NPs coated with HMBP molecules (i.e., 3.4 HMBPene/nm2) [18]. Indeed, alendronate is a zwitterion, capable of forming pairs of ions that generate multilayers around the gold NP. The chemisorption of alendronate was qualitatively assessed (Figure 1c) by Fourier-transform infrared

• coordination of phosphonates as chelating groups. The –NH scissoring (1564 cm−1) and bending vibration bands (1675 cm−1) for alendronate were slightly shifted in the Au@alendronate NPs confirming the multilayer formation through anion/cation interactions due to the alendronate zwitterion form. These results

Dipole-driven self-organization of zwitterionic molecules on alkali halide surfaces

• Laurent Nony,
• Franck Bocquet,
• Franck Para,
• Frédéric Chérioux,
• Eric Duverger,
• Frank Palmino,
• Vincent Luzet and
• Christian Loppacher

Beilstein J. Nanotechnol. 2012, 3, 285–293, doi:10.3762/bjnano.3.32

• force microscopy; organic molecule; self-organization; zwitterion; Introduction The adsorption of organic molecules on a crystalline substrate surface is governed by a delicate balance between the molecule–molecule (MM) and the molecule–substrate (MS) interaction. The latter can strongly depend on the

• lines, regardless of the substrate lattice constant. Experimental The molecule we used is the zwitterion 4-methoxy-4′-(3-sulfonatopropyl)stilbazolium (MSPS). MSPS molecules were synthesized in accordance with the method previously described by Serbutoviez et al. [20] and Makoudi et al. [21]. MSPS is

• above their preferred adsorption sites, at which the positive charge of the zwitterion would be strongly adsorbed on an anion Cl− (Figure 5a and Figure 5b). For NaCl there is a double modulation of the stress ε within the film along the direction (Figure 5e). In contrast to the case of KBr described