Enzymatically promoted release of organic molecules linked to magnetic nanoparticles

• Chiara Lambruschini,
• Silvia Villa,
• Luca Banfi,
• Fabio Canepa,
• Fabio Morana,
• Annalisa Relini,
• Paola Riani,
• Renata Riva and
• Fulvio Silvetti

Beilstein J. Nanotechnol. 2018, 9, 986–999, doi:10.3762/bjnano.9.92

• ), 736 (w), 668 (m), 607 (m) cm−1; HRMS (ESI+) m/z [M + H+]: calcd for C26H47N4O8: 543.3394; found: 543.3398. tert-Butyl ((S)-5-((S)-2-((R)-2-amino-3-methylbutanamido)-4-methylpentanamido)-6-oxo-6-((pyren-1-ylmethyl)amino)hexyl)carbamate (6): A suspension of 1-pyrenemethylamine hydrochloride (197 mg

DNA origami deposition on native and passivated molybdenum disulfide substrates

• Xiaoning Zhang,
• Masudur Rahman,
• David Neff and
• Michael L. Norton

Beilstein J. Nanotechnol. 2014, 5, 501–506, doi:10.3762/bjnano.5.58

• of studies, pyrene and 1-pyrenemethylamine, were evaluated as surface modifications which might mitigate this effect. While both species were found to form adsorption layers on MoS2 via physisorption, 1-pyrenemethylamine serves as a better protective agent and preserves the structures for

• significantly longer times. These findings will be beneficial for the fabrication of future DNA origami/MoS2 hybrid electronic structures. Keywords: atomic force microscopy (AFM); DNA origami; molybdenum disulfide (MoS2); pyrene; 1-pyrenemethylamine; surface modification; Introduction Since it was first

• reported below for the first time. An unanticipated observation was that DNA origami structures decompose on contacting the MoS2 surface. However, the shape of DNA origami constructs can be preserved with the aid of an adhesion layer composed of either pyrene or 1-pyrenemethylamine. It is expected that