Diisocyanoarene-linked pentacarbonylvanadate(I−) ions as building blocks in a supramolecular charge-transfer framework assembled through noncovalent π–π and contact ion interactions

2012 ◽  
Vol 41 (26) ◽  
pp. 7845 ◽  
Author(s):  
Tiffany R. Maher ◽  
John J. Meyers ◽  
Andrew D. Spaeth ◽  
Krista R. Lemley ◽  
Mikhail V. Barybin
Keyword(s):  
Charge Transfer ◽  
Building Blocks ◽  
Ion Interactions

Metal–semiconductor heterostructures for surface-enhanced Raman scattering: synergistic contribution of plasmons and charge transfer

2021 ◽  
Author(s):  
Yawen Liu ◽  
Hao Ma ◽  
Xiao Xia Han ◽  
Bing Zhao
Keyword(s):  
Charge Transfer ◽  
Raman Scattering ◽  
Building Blocks ◽  
Surface Enhanced Raman Scattering ◽  
Semiconductor Heterostructures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

SERS on metal–semiconductor heterostructures including their building blocks, enhancement mechanisms and applications was reviewed. The synergistic contribution of plasmons and charge transfer is highlighted.

Fluorinated aminoanthranilamides: non-native amino acids for bringing proteomic approaches to charge-transfer systems

2017 ◽  
Vol 19 (11) ◽  
pp. 7871-7876 ◽  
Author(s):  
Jillian M. Larsen-Clinton ◽  
Eli M. Espinoza ◽  
Maximillian F. Mayther ◽  
John Clark ◽  
Christina Tao ◽  
...  
Keyword(s):  
Amino Acids ◽  
Charge Transfer ◽  
Building Blocks ◽  
Selective Substitution

A highly selective substitution leads to a set of unique non-native amino acids that can serve as building blocks for molecular electrets.

Charge-Transfer Interaction in Single-Walled Carbon Nanotubes with Tetrathiafulvalene and Their Applications

2007 ◽  
Vol 7 (11) ◽  
pp. 4116-4119 ◽  
Author(s):  
Jin-Sun Kim ◽  
Kyuseok Choi ◽  
Ju-Jin Kim ◽  
Dong-Youn Noh ◽  
Sang-Kyu Park ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Charge Transfer ◽  
Photoelectron Spectroscopy ◽  
Specific Interaction ◽  
Building Blocks ◽  
Radial Breathing Mode ◽  
Industrial Applications ◽  
Binding Energies ◽  
Single Walled Carbon ◽  
Charge Transfer Interaction

We observed that single-walled carbon nanotube (SWNT) was aligned in the presence of TTF. This alignment was induced by a specific interaction between SWNT and tetrathiafulvalene (TTF), a well-known organic donor. The interaction between the two molecules can be explained by a charge-transfer, which was confirmed by X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. The binding energies of S (2P1/2) and S (2P3/2) were shifted from 163.0 eV and 164.1 eV to 163.9 eV and 165.1 eV, respectively. In Raman spectra of the SWNT-TTF, three peaks of SWNT in radial breathing mode were also upshifted by 4–5 cm−1. The charge-transfer interaction also contributed in modifying the electronic structure of SWNT and furthermore enhanced the electrical conductivity of SWNT. A more conductive thin film was fabricated using the SWNT-TTF. Four-probe measurement revealed that the surface resistance of the SWNT-TTF film was reduced to 4.359 Ω at room temperature while that of SWNT film was 6.894 Ω. These results enable carbon nanotubes to be utilized more for practically for industrial applications in fabricating peculiar nano-sized building blocks.

scholarly journals Synthesis and Characterization of Metallo-Supramolecular Polymers Based on Benzodipyrrolidone

2021 ◽  
Vol 9 ◽  
Author(s):  
Zheng Chi ◽  
Hao Dong ◽  
Ganhui Shi ◽  
Pan Liu ◽  
Chenchen Ma ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Self Assembly ◽  
Energy Gap ◽  
Coupling Reaction ◽  
Building Blocks ◽  
Supramolecular Polymers ◽  
Absorption Bands ◽  
Suzuki Coupling Reaction ◽  
Ligand Charge Transfer ◽  
Common Precursor

A simple route to the preparation of benzodipyrrolidone (BDP) based monomeric building blocks containing 2,2′:6′,2″-terpyridines is reported from a common precursor 4′-(4-pinacolatoboronphenyl)-2,2′:6′,2″-terpyridine via Suzuki coupling reaction. Self-assembly polymerization with ruthenium (II) ions under mild conditions yielded a series of novel metallo-supramolecular polymers with weak donor-acceptor (D-A) structures based on benzodipyrrolidone. The structure of the bridge connected BDP with terpyridine have a significant impact on the wavelength and intensity of the intramolecular charge transfer (ICT) absorption peak. The resulting metallo-polymers exhibited strong double absorption bands around 315 nm and 510 nm involved in π-π* transitions and ICT or metal to ligand charge transfer (MLCT) absorption bands. The forming of D-A structure and coordination with ruthenium (II) ions is favorable to narrow the energy gap and the energy gaps of the resulting metallo-supramolecular polymers are 2.01 and 1.62 eV, respectively.

scholarly journals 3-Methylpiperidinyl Carbodithioates as Building Blocks for 1,3-Dithiolium Derivatives

2013 ◽  
Vol 21 (1) ◽  
pp. 47-56
Author(s):  
Laura G. Sarbu ◽  
Lucian G. Bahrin
Keyword(s):  
Charge Transfer ◽  
Sulfuric Acid ◽  
Absorption Band ◽  
Perchloric Acid ◽  
Building Blocks ◽  
Charge Transfer Absorption Band ◽  
Internal Charge Transfer ◽  
Internal Charge

Abstract New 1,3-dithiolium derivatives have been synthesized by heterocyclocondensation of various 3-methylpiperidinyl carbodithioates derived from 2-hydroxypropiophenones. Thus, 1,3-dithiolium perchlorates have been obtained by the treatment of the corresponding dithiocarbamates with a mixture of acetic and sulfuric acid, followed by the addition of perchloric acid. 1,3-Dithiolium perchlorates have been converted to the corresponding 2-(1,3-dithiolium) phenolates under weak basic conditions. These phenolates exhibit mesoionic character with an internal charge transfer absorption band.

Anion–π recognition between [M(CN)6]3− complexes and HAT(CN)6: structural matching and electronic charge density modification

2017 ◽  
Vol 46 (11) ◽  
pp. 3482-3491 ◽  
Author(s):  
Jedrzej Kobylarczyk ◽  
Dawid Pinkowicz ◽  
Monika Srebro-Hooper ◽  
James Hooper ◽  
Robert Podgajny
Keyword(s):  
Charge Transfer ◽  
Solid State ◽  
Charge Density ◽  
Building Blocks ◽  
Electronic Charge ◽  
Anionic Complex ◽  
Anion Receptor ◽  
Electronic Charge Density ◽  
Ct System ◽  
Structural Matching

The first example of an anion–π charge transfer (CT) system between an anionic complex and a multisite anion receptor in the solid state and in solution was constructed based on prediction of structural and electronic matching of the building blocks.

Modelling charge transfer processes in C2+–tetrahydrofuran collision for ion-induced radiation damage in DNA building blocks

2017 ◽  
Vol 19 (30) ◽  
pp. 19722-19732 ◽  
Author(s):  
Ewa Erdmann ◽  
Marie-Christine Bacchus-Montabonel ◽  
Marta Łabuda
Keyword(s):  
Charge Transfer ◽  
Cancer Therapy ◽  
Radiation Damage ◽  
Building Blocks ◽  
Carbon Ions ◽  
Medical Treatments ◽  
Transfer Processes ◽  
Biological Interest

Investigations of the collision-induced processes involving carbon ions and molecules of biological interest, in particular DNA building blocks, are crucial to model the effect of radiation on cells to improve medical treatments for cancer therapy.

scholarly journals Charge transfer through single molecule contacts: How reliable are rate descriptions?

2011 ◽  
Vol 2 ◽  
pp. 416-426 ◽  
Author(s):  
Denis Kast ◽  
L Kecke ◽  
J Ankerhold
Keyword(s):  
Charge Transfer ◽  
Exact Solutions ◽  
Ab Initio ◽  
Molecular Electronics ◽  
Single Molecule ◽  
Building Blocks ◽  
Transport Processes ◽  
Intramolecular Electron Transfer ◽  
Transfer Rates ◽  
The Impact

Background: The trend for the fabrication of electrical circuits with nanoscale dimensions has led to impressive progress in the field of molecular electronics in the last decade. However, a theoretical description of molecular contacts as the building blocks of future devices is challenging, as it has to combine the properties of Fermi liquids in the leads with charge and phonon degrees of freedom on the molecule. Outside of ab initio schemes for specific set-ups, generic models reveal the characteristics of transport processes. Particularly appealing are descriptions based on transfer rates successfully used in other contexts such as mesoscopic physics and intramolecular electron transfer. However, a detailed analysis of this scheme in comparison with numerically exact solutions is still elusive. Results: We show that a formulation in terms of transfer rates provides a quantitatively accurate description even in domains of parameter space where strictly it is expected to fail, e.g., at lower temperatures. Typically, intramolecular phonons are distributed according to a voltage driven steady state that can only roughly be captured by a thermal distribution with an effective elevated temperature (heating). An extension of a master equation for the charge–phonon complex, to effectively include the impact of off-diagonal elements of the reduced density matrix, provides very accurate solutions even for stronger electron–phonon coupling. Conclusion: Rate descriptions and master equations offer a versatile model to describe and understand charge transfer processes through molecular junctions. Such methods are computationally orders of magnitude less expensive than elaborate numerical simulations that, however, provide exact solutions as benchmarks. Adjustable parameters obtained, e.g., from ab initio calculations allow for the treatment of various realizations. Even though not as rigorously formulated as, e.g., nonequilibrium Green’s function methods, they are conceptually simpler, more flexible for extensions, and from a practical point of view provide accurate results as long as strong quantum correlations do not modify the properties of the relevant subunits substantially.

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