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

Optically and electrically driven nanoantennas

• Monika Fleischer,
• Dai Zhang and
• Alfred J. Meixner

Beilstein J. Nanotechnol. 2020, 11, 1542–1545, doi:10.3762/bjnano.11.136

• ][51]. A recent example of the strong coupling between silver nanorods and photochromic molecules is demonstrated in [52]. Due to the high local field intensity in the gap of a nanodimer, strong polarization of the particle, and consequently, strong SHG from the particle surface, may be expected

Polarization-dependent strong coupling between silver nanorods and photochromic molecules

• Gwénaëlle Lamri,
• Alessandro Veltri,
• Jean Aubard,
• Pierre-Michel Adam,
• Nordin Felidj and
• Anne-Laure Baudrion

Beilstein J. Nanotechnol. 2018, 9, 2657–2664, doi:10.3762/bjnano.9.247

• resonance and the excited state of photochromic molecules. By varying the width and the length of the nanorods independently, a clear Rabi splitting appears in the dispersion curves of both resonators. Keywords: active plasmonics; photochromic molecules; plasmon; Rabi splitting; strong coupling

• change in the refractive index or the doping ability of these materials allows the plasmonic system’s environment to be actively changed and the plasmonic properties to be controlled. Another way to control LSPR is to use photochromic molecules. These molecules can switch their conformation from a

• transparent state to a colored state by absorbing UV light and can return to their original state by a heating process [9] or by absorbing visible light [10]. Indeed, the photochromic transition is reversible and can undergo several cycles [11]. Current applications of these molecules are mainly found in

Recent highlights in nanoscale and mesoscale friction

• Andrea Vanossi,
• Dirk Dietzel,
• Andre Schirmeisen,
• Ernst Meyer,
• Rémy Pawlak,
• Thilo Glatzel,
• Marcin Kisiel,
• Shigeki Kawai and
• Nicola Manini

Beilstein J. Nanotechnol. 2018, 9, 1995–2014, doi:10.3762/bjnano.9.190

• become water- and dirt-repellent under UV-light exposure. In solution, photoinduced conformational changes of molecules are also well-known photochromic reactions. However, little is known whether such phenomena operated on the molecular level are reversible at surfaces. By controlling the properties of

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

• : inelastic electron tunneling spectroscopy; molecular junction; photochromic; single molecule; Introduction Molecular junctions hold promise for the realization of novel miniaturized electronic circuits [1][2][3][4][5][6] as well as for thermoelectric energy conversion devices [7][8][9][10]. Optoelectronic

• properties of several species of photochromic molecules in single-molecule junctions with gold electrodes have been investigated extensively to understand the mechanisms of charge transport and optical switching [11][12][13][14][15][16]. Among the photochromic molecules, diarylethene derivatives are

• closed forms of the photochromic molecule. For both isomeric molecular states, the features observed in the IET spectra are assigned with the help of computations that take the electron-vibration (EV) coupling into account. Results and Discussion The C5F-ThM photochromic molecule, used in this work, is

Investigating organic multilayers by spectroscopic ellipsometry: specific and non-specific interactions of polyhistidine with NTA self-assembled monolayers

• Ilaria Solano,
• Pietro Parisse,
• Ornella Cavalleri,
• Federico Gramazio,
• Loredana Casalis and
• Maurizio Canepa

Beilstein J. Nanotechnol. 2016, 7, 544–553, doi:10.3762/bjnano.7.48

• ]. Detection of molecular fingerprints becomes definitely easier as the thickness scales up, as in the case of a 30 nm thick photochromic polymer film [59]. Due to index matching issues, observation of optical absorptions in SAMs becomes easier in liquid with refractive index close to that of the film [48][50

Rigid multipodal platforms for metal surfaces

• Michal Valášek,
• Marcin Lindner and
• Marcel Mayor

Beilstein J. Nanotechnol. 2016, 7, 374–405, doi:10.3762/bjnano.7.34

• system based on an adamantane core unit with acetyl protected thiol anchoring groups and an azobenzene head-group was reported for the preparation of photochromic SAMs on gold surfaces [112]. Another type of rigid platform, based on the cyclohexyl-based tridental platform 22-Cn (Figure 10), was pioneered

Light-powered, artificial molecular pumps: a minimalistic approach

• Giulio Ragazzon,
• Massimo Baroncini,
• Serena Silvi,
• Margherita Venturi and
• Alberto Credi

Beilstein J. Nanotechnol. 2015, 6, 2096–2104, doi:10.3762/bjnano.6.214

• conventional combustion engines. Light is an energy source of great interest for use with molecules that has been widely exploited to operate molecular switches for a long time. For example, in photochromic compounds [25], the transformations between the two states can be caused by light of different

Controlling the dispersion of supported polyoxometalate heterogeneous catalysts: impact of hybridization and the role of hydrophilicity–hydrophobicity balance and supramolecularity

• Gijo Raj,
• Colas Swalus,
• Eglantine Arendt,
• Pierre Eloy,
• Michel Devillers and
• Eric M. Gaigneaux

Beilstein J. Nanotechnol. 2014, 5, 1749–1759, doi:10.3762/bjnano.5.185

• medicine [3], magnetism [4][5][6], electronics [7], electro- and photochromic systems [8][9], and catalysis [10][11][12][13][14]. The hybridization of POM anions in an organic matrix offers several practical advantages. In catalysis, for example, hybridization offers a means to synthesize heterogeneous POM

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

• , Germany Chemistry Department, University of Konstanz, D-78457 Konstanz, Germany 10.3762/bjnano.3.89 Abstract We report on an experimental analysis of the charge transport through sulfur-free photochromic molecular junctions. The conductance of individual molecules contacted with gold electrodes and the

• interest are optically addressable molecules, the transport properties of which can repeatedly and reversibly be changed by irradiation with light pulses. An example of these photochromic molecules is given by the class of diarylethenes. They consist of a core containing an aromatic ring that can be

• provide stronger coupling and considerable improvement of the level alignment. Since no low-temperature measurements have been performed on this compound, we cannot compare the absolute values in a more detailed manner. Conclusion We have investigated charge-transport characteristics of photochromic

Investigation on structural, thermal, optical and sensing properties of meta-stable hexagonal MoO₃ nanocrystals of one dimensional structure

• Angamuthuraj Chithambararaj and
• Arumugam Chandra Bose

Beilstein J. Nanotechnol. 2011, 2, 585–592, doi:10.3762/bjnano.2.62

• ][8][9][10][11]. Recently, Dhage et al. [12], Ramana et al. [13] and Song et al. [14] have prepared h-MoO3 and studied its structural and thermal properties. Zheng et al. prepared highly dispersed h-MoO3 through a solution-based technique and investigated its photochromic and electrochromic properties