Self-assembly of amino acids toward functional biomaterials

• Huan Ren,
• Lifang Wu,
• Lina Tan,
• Yanni Bao,
• Yuchen Ma,
• Yong Jin and
• Qianli Zou

Beilstein J. Nanotechnol. 2021, 12, 1140–1150, doi:10.3762/bjnano.12.85

• adhesive fibers. Therefore, a simple and robust bionic cyanobacteria model with excellent catalytic activity and sustainability was obtained. In addition, amino acids were co-assembled with phthalocyanines to improve their functionality. Han et al. [89] used histidine derivatives, 9

Interface interaction of transition metal phthalocyanines with strontium titanate (100)

• Reimer Karstens,
• Thomas Chassé and
• Heiko Peisert

Beilstein J. Nanotechnol. 2021, 12, 485–496, doi:10.3762/bjnano.12.39

• at interfaces; strontium titanate; transition metal phthalocyanines; Introduction Interfaces between organic semiconductors and oxides are of increasing fundamental interest. Such interfaces determine key properties of a broad variety of electronic devices. Common examples are dye-sensitized solar

• general chemical structure of the chosen molecules is shown in Figure 1c. The electronic properties of transition metal phthalocyanines (TMPcs) can be widely chemically modified at both the central metal atom and the macrocycle. This chemical tunability allows for a broad variation of electronic

• (Supporting Information File 1). The peak fit parameters are given in Table S7 and Table S8 (Supporting Information File 1). For the thickest films in Figure 3 (6.9 nm) the molecule-related core level spectra can be described analogously to the literature of transition metal phthalocyanines [53][54][55]. A

Extended iron phthalocyanine islands self-assembled on a Ge(001):H surface

• Rafal Zuzak,
• Marek Szymonski and
• Szymon Godlewski

Beilstein J. Nanotechnol. 2021, 12, 232–241, doi:10.3762/bjnano.12.19

• (001):H [22][23], Si(111):H [24], and Ge(001):H [25][26][27][28] surfaces are most commonly mentioned. Iron phthalocyanines (FePc) have been studied on Si(111):H [24] and it was concluded that the molecules are weakly coupled to the substrate. Interestingly, in another study, it has been reported that

• achieve control over the growth of molecular columns of CuPc molecules [40]. Metal phthalocyanines exhibit useful physical, chemical, and electronic properties. They are considered as promising candidates for practical applications in (opto)electronics and photovoltaics, for instance, in solar cells or

• transistors [24][41][42]. Moreover, they are ideal candidates to study the influence of the interaction between the central metal atom and the surrounding ligands on the overall properties. Commonly, metal phthalocyanines and their derivatives have been investigated on crystalline metal surfaces [43][44][45

Adsorption and self-assembly of porphyrins on ultrathin CoO films on Ir(100)

• Feifei Xiang,
• Tobias Schmitt,
• Marco Raschmann and
• M. Alexander Schneider

Beilstein J. Nanotechnol. 2020, 11, 1516–1524, doi:10.3762/bjnano.11.134

• perpendicular to the surface has previously been observed for variety of molecules [37][38][39]. Many metal phthalocyanines have been shown to rotate on metal surfaces [40][41][42][43], but notably also a modified Co phthalocyanine on Si(100) [44]. Molecules sometimes come close enough to each other or can be

Self-assembly and spectroscopic fingerprints of photoactive pyrenyl tectons on hBN/Cu(111)

• Domenik M. Zimmermann,
• Knud Seufert,
• Luka Ðorđević,
• Tobias Hoh,
• Sushobhan Joshi,
• Tomas Marangoni,
• Davide Bonifazi and
• Willi Auwärter

Beilstein J. Nanotechnol. 2020, 11, 1470–1483, doi:10.3762/bjnano.11.130

• , porphines, and fluorinated phthalocyanines [28][33][37]. Taken all together, these observations demonstrated that distinct tectons with peripheral recognition moieties can afford the assembly of extended supramolecular architectures also on electronically superstructured hBN platforms. Spectroscopic

Adsorption behavior of tin phthalocyanine onto the (110) face of rutile TiO₂

• Lukasz Bodek,
• Mads Engelund,
• Aleksandra Cebrat and
• Bartosz Such

Beilstein J. Nanotechnol. 2020, 11, 821–828, doi:10.3762/bjnano.11.67

• tunneling microscopy (STM); tin phthalocyanine (SnPc); titanium dioxide (TiO2); Introduction Phthalocyanines (Pcs) are aromatic molecules that can form metal complexes with a variety of elements, which can be used to tune molecular properties, such as position or shape of adsorption bands. Therefore, Pcs

• big molecules such as phthalocyanines. However, studies of either the morphology of assemblies or the behavior of isolated molecules by microscopic methods may shed light on the role of the central atom of Pcs in the adsorption process and allow one to distinguish it from the influence of the surface

• overlapping pyrrole-like subunits of adjacent phthalocyanines, as indicated by the blue arrows in Figure 1b. The layer is stable up to approximately 280 °C, when the molecules start to desorb from the surface. No changes in the layer morphology (i.e., molecular organization) were observed upon annealing. Both

Templating effect of single-layer graphene supported by an insulating substrate on the molecular orientation of lead phthalocyanine

• K. Priya Madhuri,
• Abhay A. Sagade,
• Pralay K. Santra and
• Neena S. John

Beilstein J. Nanotechnol. 2020, 11, 814–820, doi:10.3762/bjnano.11.66

• , among others, organic light-emitting diodes and organic photovoltaics. In particular, metal phthalocyanines (MPcs) have gained considerable interest as they offer flexibility in the modification of their optoelectronic properties through their molecular packing, which in turn is governed by substrate

Rational design of block copolymer self-assemblies in photodynamic therapy

• Maxime Demazeau,
• Laure Gibot,
• Anne-Françoise Mingotaud,
• Patricia Vicendo,
• Clément Roux and
• Barbara Lonetti

Beilstein J. Nanotechnol. 2020, 11, 180–212, doi:10.3762/bjnano.11.15

Molecular attachment to a microscope tip: inelastic tunneling, Kondo screening, and thermopower

• Rouzhaji Tuerhong,
• Mauro Boero and
• Jean-Pierre Bucher

Beilstein J. Nanotechnol. 2019, 10, 1243–1250, doi:10.3762/bjnano.10.124

• similar to the mechanical break junctions [9][10][11][12], but with a much better control of the location, number and nature of the molecules. Transition-metal phthalocyanines with a magnetic center represent a family of simple and robust molecules well suited to study tunable magnetic interactions on

• vibration modes of transition-metal phthalocyanines [29][30], the two steps at |Vth| = 110 ± 5 mV are easily assigned to the excitation of the stretching of the Mn–Niso bonds of the MnPc molecule. The conductance step ΔG at the positive threshold voltage of 110 ± 5 mV, corresponds to an increase in the

The effect of translation on the binding energy for transition-metal porphyrines adsorbed on Ag(111) surface

• Luiza Buimaga-Iarinca and
• Cristian Morari

Beilstein J. Nanotechnol. 2019, 10, 706–717, doi:10.3762/bjnano.10.70

• and their derivatives on noble-metal surfaces. Computational Details The computational setup and calculations performed for the present study were similar to those used in our study on metal phthalocyanines adsorbed on a gold surface [29]. We used the “Siesta” code [52][53][54]. One main

Metal-free catalysis based on nitrogen-doped carbon nanomaterials: a photoelectron spectroscopy point of view

• Mattia Scardamaglia and
• Carla Bittencourt

Beilstein J. Nanotechnol. 2018, 9, 2015–2031, doi:10.3762/bjnano.9.191

• -synthetic treatments. The most common technique for doping during the synthesis is chemical vapor deposition (CVD), similar to the synthesis of the pristine material [36][69][70], albeit using nitrogen-containing precursors such as benzylamine [71], acetonitrile [72][73], phthalocyanines [74][75] or ammonia

Heterostuctures of 4-(chloromethyl)phenyltrichlorosilane and 5,10,15,20-tetra(4-pyridyl)-21H,23H-porphine prepared on Si(111) using particle lithography: Nanoscale characterization of the main steps of nanopatterning

• Phillip C. Chambers and
• Jayne C. Garno

Beilstein J. Nanotechnol. 2018, 9, 1211–1219, doi:10.3762/bjnano.9.112

• differences in structure and conformation [15]. The submolecular structure of cobalt and copper phthalocyanines on gold substrates were resolved with STM by Lu et al. [16]. The differences in central metals were resolved for a mixed sample. The molecular orientation and molecular switching properties of a

Adsorption of iron tetraphenylporphyrin on (111) surfaces of coinage metals: a density functional theory study

• Hao Tang,
• Nathalie Tarrat,
• Véronique Langlais and
• Yongfeng Wang

Beilstein J. Nanotechnol. 2017, 8, 2484–2491, doi:10.3762/bjnano.8.248

• spin switches. Keywords: activation barrier; density functional theory; iron tetraphenylporphyrin; spin switch; spin states; Introduction Porphyrins, phthalocyanines and their transition-metal (TM) complexes are largely investigated in surface science as reported in detail by Gottfried [1]. The

Towards molecular spintronics

• Georgeta Salvan and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2017, 8, 2464–2466, doi:10.3762/bjnano.8.245

• considered molecules spans from heterotrinuclear bis(oxamato)-type and bis(oxamidato)-type complexes [1][2][3], to exchange-coupled dinickel complexes [4], metallo-phthalocyanines [5][6][7], metallo-porphyrins [8][9] and charge-transfer complexes [10][11], to metal-free molecules like pentacene-derivatives

Electronic structure, transport, and collective effects in molecular layered systems

• Torsten Hahn,
• Tim Ludwig,
• Carsten Timm and
• Jens Kortus

Beilstein J. Nanotechnol. 2017, 8, 2094–2105, doi:10.3762/bjnano.8.209

• possible by variation of the stack size of CoPc molecules. The use of different types of phthalocyanines as suggested in this work seems to open a new path to design transport properties. The DFT-NEGF as a standard approach for the investigation of transport properties of model device structures gives

(Metallo)porphyrins for potential materials science applications

• Lars Smykalla,
• Carola Mende,
• Michael Fronk,
• Pablo F. Siles,
• Michael Hietschold,
• Georgeta Salvan,
• Dietrich R. T. Zahn,
• Oliver G. Schmidt,
• Tobias Rüffer and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 1786–1800, doi:10.3762/bjnano.8.180

• (metallo)phthalocyanines as the organic part and different inorganic materials has been the explored with respect to its application potential in a comprehensive recent review [43]. Results Local electrical transport characteristics and morphology characteristics of nanostructured CuTPP(OMe)4 on Ni

Charge transfer from and to manganese phthalocyanine: bulk materials and interfaces

• Florian Rückerl,
• Daniel Waas,
• Bernd Büchner,
• Martin Knupfer,
• Dietrich R. T. Zahn,
• Francisc Haidu,
• Torsten Hahn and
• Jens Kortus

Beilstein J. Nanotechnol. 2017, 8, 1601–1615, doi:10.3762/bjnano.8.160

• Bergakademie Freiberg, Leipziger Str. 23, D-09596 Freiberg, Germany 10.3762/bjnano.8.160 Abstract Manganese phthalocyanine (MnPc) is a member of the family of transition-metal phthalocyanines, which combines interesting electronic behavior in the fields of organic and molecular electronics with local magnetic

• moments. MnPc is characterized by hybrid states between the Mn 3d orbitals and the π orbitals of the ligand very close to the Fermi level. This causes particular physical properties, different from those of the other phthalocyanines, such as a rather small ionization potential, a small band gap and a

• transfer; electronic properties; manganese phthalocyanine; Review Introduction The family of metal-centered phthalocyanines has been considered for future technological applications because of their favorable electronic and optical properties and their advantageous chemical stability [1][2][3][4][5][6][7

Formation of ferromagnetic molecular thin films from blends by annealing

• Peter Robaschik,
• Ye Ma,
• Salahud Din and
• Sandrine Heutz

Beilstein J. Nanotechnol. 2017, 8, 1469–1475, doi:10.3762/bjnano.8.146

• resulting films exhibit substantial coercivity (13 mT) at 2 K and a Curie temperature of 11.5 K. Keywords: co-deposition; molecular spintronics; organic thin films; phthalocyanines; tetracyanoquinodimethane (TCNQ); Introduction Controlling the structure of molecular thin films is of great interest for

• films, which are amorphous on non-interacting substrates, by depositing the molecules on a 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) surface, leading to a transformation from paramagnetic to antiferromagnetic behaviour [5]. Another promising class of molecules are phthalocyanines (Pc) that

• can be easily incorporated in thin films that exhibit outstanding semiconducting and magnetic properties [6]. Phthalocyanines feature different polymorphs, often defined by the angle formed by the molecule and the stacking axis, φ, which can be controlled via different temperature treatments. For

Synthesis, spectroscopic characterization and thermogravimetric analysis of two series of substituted (metallo)tetraphenylporphyrins

• Rasha K. Al-Shewiki,
• Carola Mende,
• Roy Buschbeck,
• Pablo F. Siles,
• Oliver G. Schmidt,
• Tobias Rüffer and
• Heinrich Lang

Beilstein J. Nanotechnol. 2017, 8, 1191–1204, doi:10.3762/bjnano.8.121

• terminal –C(O)NR2 groups. UV–vis studies The UV–vis absorption spectra of 2/2a–d and 3/3a–d were recorded in CHCl3 solution in the spectral range of 230–700 nm. In order to avoid possible impact of the concentrations on λabs and ε, which was reported for (metallo)phthalocyanines [28], we performed

Nanoantenna-assisted plasmonic enhancement of IR absorption of vibrational modes of organic molecules

• Alexander G. Milekhin,
• Olga Cherkasova,
• Sergei A. Kuznetsov,
• Ilya A. Milekhin,
• Ekatherina E. Rodyakina,
• Alexander V. Latyshev,
• Sreetama Banerjee,
• Georgeta Salvan and
• Dietrich R. T. Zahn

Beilstein J. Nanotechnol. 2017, 8, 975–981, doi:10.3762/bjnano.8.99

• mechanism [3], which means that the spin polarization of the carriers can continue for an extended time (in the range from microseconds to milliseconds) [4]. This feature is caused by very low spin–orbit coupling and weak hyperfine interaction. Phthalocyanines (Pcs) are a class of stable, planar small

• phthalocyanines. These molecules also offer the possibility of changing the spin-dependent transport mechanism by slightly modifying the molecular structure [6]. It has been previously shown that the molecular structure of a magnetic material can be probed by various spectroscopic techniques [11]. Under

Energy-level alignment at interfaces between manganese phthalocyanine and C₆₀

• Daniel Waas,
• Florian Rückerl,
• Martin Knupfer and
• Bernd Büchner

Beilstein J. Nanotechnol. 2017, 8, 927–932, doi:10.3762/bjnano.8.94

• reproduce previous experimental results and to provide a comprehensive overview over the possible energy level alignments [26]. One class of materials that has been considered as constituents of organic devices quite often is the family of transition-metal phthalocyanines [27]. Indeed, several

• and an appropriate electron acceptor is a crucial process. Often, fullerenes (C60) and their derivatives are used as acceptor materials. Amongst the transition-metal phthalocyanines MnPc is exceptional in some respects. Due to the participation of manganese 3d orbitals to the molecular electronic

• states close to the Fermi energy, MnPc differs significantly from other transition-metal phthalocyanines, as it is characterized by the smallest ionization potential, the largest electron affinity, the smallest band gap and the largest exciton-binding energy [37][38][39][40][41][42]. Furthermore, it has

Investigation of growth dynamics of carbon nanotubes

• Marianna V. Kharlamova

Beilstein J. Nanotechnol. 2017, 8, 826–856, doi:10.3762/bjnano.8.85

Selective photodissociation of tailored molecular tags as a tool for quantum optics

• Ugur Sezer,
• Philipp Geyer,
• Moritz Kriegleder,
• Maxime Debiossac,
• Armin Shayeghi,
• Markus Arndt,
• Lukas Felix and
• Marcel Mayor

Beilstein J. Nanotechnol. 2017, 8, 325–333, doi:10.3762/bjnano.8.35

• the idea of Young’s double slit experiment and demonstrated diffraction of fullerenes [1] and functionalized phthalocyanines [9] at nanomechanical gratings. Later studies used variants of Talbot–Lau interferometry to demonstrate the quantum wave nature of more than a dozen of different molecules and

Ordering of Zn-centered porphyrin and phthalocyanine on TiO₂(011): STM studies

• Piotr Olszowski,
• Lukasz Zajac,
• Szymon Godlewski,
• Bartosz Such,
• Rémy Pawlak,
• Antoine Hinaut,
• Res Jöhr,
• Thilo Glatzel,
• Ernst Meyer and
• Marek Szymonski

Beilstein J. Nanotechnol. 2017, 8, 99–107, doi:10.3762/bjnano.8.11

• conditions. Keywords: dye-sensitized solar cells; molecular nanostructures; phthalocyanines; porphyrins; rutile surfaces; STM imaging; Introduction There is an increasing interest in optoelectronic applications of organic molecular heterostructures which utilize inorganic substrates, such as titanium

• role. In general, they depend not only on the characteristics of the individual building blocks, but are also sensitive to the organic–inorganic interface and the molecule orientation [4][5]. In this context, metal containing phthalocyanines and porphyrins are very often used for microscopic studies

• this study to Zn(II) phthalocyanines, not only to demonstrate the observations yet for the other system, but with the aim to find out whether the central metal atom plays any significant role in surface adsorption and ordering. Some indications that this could take place have been recently reported for

Layered composites of PEDOT/PSS/nanoparticles and PEDOT/PSS/phthalocyanines as electron mediators for sensors and biosensors

• Celia García-Hernández,
• Cristina García-Cabezón,
• Fernando Martín-Pedrosa,
• José Antonio De Saja and
• María Luz Rodríguez-Méndez

Beilstein J. Nanotechnol. 2016, 7, 1948–1959, doi:10.3762/bjnano.7.186

• electron mediators to facilitate the transfer of electrons from the enzyme to the electrode [20]. PEDOT/PSS is becoming popular as an electron mediator in biosensing [21][22]. Gold nanoparticles and phthalocyanines have also been positively demonstrated as electron mediators in tyrosinase biosensors [16

• larger current response (one order of magnitude) towards catechol than bare ITO glass. In addition, the presence of nanoparticles or phthalocyanines produced a shift of the cathodic wave to lower potentials (−0.4 V in unmodified ITO, −0.2 V in PEDOT/PSS and −0.01 V in PEDOT/PSS/EM). The electrocatalytic

• during the oxidation of catechol. In addition, the aromatic structure of catechol can also establish strong π–π interactions with phthalocyanines, thus facilitating the electron transfer. The interaction of catechol and hydroquinone with electrodes was similar. However, a clear difference was observed