Related Experiment Video
Updated: Jun 13, 2026
06:56
1,3,5-Triphenylbenzene and Corannulene as Electron Receptors for Lithium Solvated Electron Solutions
Published on: October 10, 2016
Solvation-induced one-dimensional polarons and electron transfer.
1Department of Physics, The University of Texas at Dallas, P. O. Box 830688, EC36, Richardson, Texas 75083, USA.
The Journal of Chemical Physics
|May 6, 2010
Summary
Solvent fluctuations can create localized electronic states in semiconductor nanostructures, enabling electron transfer via polaron formation. This study explores this phenomenon in one-dimensional systems, relevant to carbon nanotubes.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Physical Chemistry
Background:
- One-dimensional (1D) semiconductor nanostructures in polar solvents can exhibit unique electronic properties.
- Medium fluctuations can induce localized electronic levels within the band gap of these nanostructures.
- Charge carriers can self-localize into polaronic states, influencing electron transfer dynamics.
Purpose of the Study:
- To describe and qualitatively picture thermally activated electron transfer involving solvation-induced polaroniclike states.
- To investigate electron transfer between small and 1D species, and between two 1D species.
- To explore the applicability of Marcus theory to these polaron-mediated transfer processes.
Main Methods:
- Adaptation of the Marcus theory framework.
- Theoretical exploration of electron transfer mechanisms.
- Illustrative calculations for tubular geometries.
Main Results:
- Demonstration of localized electronic levels arising from solvent fluctuations.
- Description of charge carrier self-localization into large-radius adiabatic polarons.
- Qualitative picture of thermally activated electron transfer via these polaron states.
Conclusions:
- Solvation-induced polaronic states facilitate electron transfer in 1D semiconductor nanostructures.
- The adapted Marcus theory provides a suitable framework for analyzing these phenomena.
- Findings have potential applications in carbon nanotube systems and related nanomaterials.
Related Concept Videos
02:12Solvating Effects
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
03:37Molecular Shape and Polarity
Dipole Moment of a Molecule
01:28Induced Electric Dipoles
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
03:13Intermolecular Forces
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...
02:42Aqueous Solutions and Heats of Hydration
Water and other polar molecules are attracted to ions. The electrostatic attraction between an ion and a molecule with a dipole is called an ion-dipole attraction. These attractions play an important role in the dissolution of ionic compounds in water.
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
02:05Entropy and Solvation
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ ≥ 15); an...