Cyclodextrins as eminent constituents in nanoarchitectonics for drug delivery systems

• Makoto Komiyama

Beilstein J. Nanotechnol. 2023, 14, 218–232, doi:10.3762/bjnano.14.21

• hindrance between the β-CyD units. Accordingly, 1O2 was efficiently generated by irradiation with 660 nm light since self-quenching of the photosensitizers was minimized. By using a photochromic switch moiety (two CyDs bridged with diarylethene), the efficiency of PDT was photo-regulated [75]. In order to

The role of ligands in coinage-metal nanoparticles for electronics

• Ioannis Kanelidis and
• Tobias Kraus

Beilstein J. Nanotechnol. 2017, 8, 2625–2639, doi:10.3762/bjnano.8.263

• as films can tune interparticle distances and conductivity [115]. Van der Molen et al. presented two-dimensional arrays of gold nanoparticles with octanethiol surface ligands that could be cross-linked by molecular insertion of diarylethene moieties. Hexagonally ordered particle layers were subjected

• to a ligand-exchange reaction and one single or a few connections between neighboring metal cores were established during illumination with UV light. The light-induced conductance enhancement of more than one order of magnitude suggested that the diarylethene molecular bridges created a percolating

• ), bromine (Br), chloride (Cl), or methoxy (MeO) groups, and with triphenylphosphine (PPh3). Reprinted with permission from [114], copyright 2012 American Chemical Society. Cross-linking of gold nanoparticles stabilized by octanethiols and connected to each other via diarylethene molecules after the

Inelastic electron tunneling spectroscopy of difurylethene-based photochromic single-molecule junctions

• Youngsang Kim,
• Safa G. Bahoosh,
• Dmytro Sysoiev,
• Thomas Huhn,
• Fabian Pauly and
• Elke Scheer

Beilstein J. Nanotechnol. 2017, 8, 2606–2614, doi:10.3762/bjnano.8.261

• Konstanz, Germany Department of Chemistry, University of Konstanz, 78457 Konstanz, Germany Okinawa Institute of Science and Technology Graduate University, Onna-son, Okinawa 904-0395, Japan 10.3762/bjnano.8.261 Abstract Diarylethene-derived molecules alter their electronic structure upon transformation

• between the open and closed forms of the diarylethene core, when exposed to ultraviolet (UV) or visible light. This transformation results in a significant variation of electrical conductance and vibrational properties of corresponding molecular junctions. We report here a combined experimental and

• theoretical analysis of charge transport through diarylethene-derived single-molecule devices, which are created using the mechanically controlled break-junction technique. Inelastic electron tunneling (IET) spectroscopy measurements performed at 4.2 K are compared with first-principles calculations in the

Current–voltage characteristics of single-molecule diarylethene junctions measured with adjustable gold electrodes in solution

• Bernd M. Briechle,
• Youngsang Kim,
• Philipp Ehrenreich,
• Artur Erbe,
• Dmytro Sysoiev,
• Thomas Huhn,
• Ulrich Groth and
• Elke Scheer

Beilstein J. Nanotechnol. 2012, 3, 798–808, doi:10.3762/bjnano.3.89

• : diarylethene; mechanically controllable break-junction; molecular electronics; photoswitching; single-molecule junctions; Introduction Charge transport in single-molecule devices is actively investigated with the aim to realize functional electronic circuits [1][2][3][4], such as switches [5], transistors [4

• small geometrical change, which makes diarylethene molecules promising building blocks for optoelectronic applications [19][20]. Since electrical measurements of diarylethene molecules started, measurements of the charge-transport properties of molecular ensembles by using large-area samples [21

• [30][31]. Recently, low-temperature measurements of the current–voltage characteristics of single-molecule diarylethene junctions have been reported [32]. By applying the resonant-level model, the level alignment and the coupling strength of the dominant current-carrying molecular orbital (frontier