Related Experiment Video
Updated: Feb 11, 2026

Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
Published on: August 15, 2019
Charge and Bonding in CuGeO3 Nanorods
Kenneth R O'Neal1, Amal Al-Wahish1, Zhao-Qian Li2
1Department of Chemistry , University of Tennessee , Knoxville , Tennessee 37996 , United States.
Abstract:
We combine infrared and Raman spectroscopies to investigate finite length scale effects in CuGeO3 nanorods. The infrared-active phonons display remarkably strong size dependence whereas the Raman-active features are, by comparison, nearly rigid. A splitting analysis of the Davydov pairs reveals complex changes in chemical bonding with rod length and temperature. Near the spin-Peierls transition, stronger intralayer bonding in the smallest rods indicates a more rigid lattice which helps to suppress the spin-Peierls transition. Taken together, these findings advance the understanding of size effects and collective phase transitions in low-dimensional oxides.
Related Concept Videos
Formal Charges
Bonding in Metals
Ionic Bonds
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
Covalent Bonds
Hydrogen Bonds
Hydrogen Bonds Control the World!
Because hydrogen has very weak electronegativity when it binds with a strongly electronegative atom, such as oxygen or nitrogen, electrons in the bond are unequally shared....
Types of Chemical Bonds

