Observation of Bridging Chlorine in Vitreous SiO2.
- 1Department of Earth Science, University of Colorado, Boulder, Boulder, Colorado80309, United States.
- 2Corning Incorporated, Science & Technology , Corning, New York14831, United States.
Abstract
The short-range to mid-range structure of inorganic glasses profoundly impacts their physical properties. In this work, we have used multiple spectroscopic methods to examine the change in the network structure of amorphous silica with addition of Cl. Unlike analogous F-doped silicas, where the bonding of halogen leads to terminal Si-F groups, NMR and Raman data for Cl-doped v-SiO2 indicate bridging between silica tetrahedra, preserving rather than reducing network connectivity and contributing to their elastic stiffness and viscosity behaviors. These bridging Cl atoms make v-SiO2 stiffer while having the same effect on density behavior per mol % dopant as F in v-SiO2 and thus may be a desirable attribute in tailoring v-SiO2 for optical applications.
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BibTeX
@article{harrison2026observation,
title = {{Observation of Bridging Chlorine in Vitreous SiO2.}},
author = {Lindsay M Harrison and Adam R Sarafian and Randall E Youngman and Craig D Nie and Matthew E McKenzie and Alisha N Clark},
journal = {The journal of physical chemistry. B},
year = {2026},
month = oct,
doi = {10.1021/acs.jpcb.6c02141},
url = {https://europepmc.org/article/MED/42917240},
note = {CC BY},
}
RIS
TY - JOUR
TI - Observation of Bridging Chlorine in Vitreous SiO2.
AU - Lindsay M Harrison
AU - Adam R Sarafian
AU - Randall E Youngman
AU - Craig D Nie
AU - Matthew E McKenzie
AU - Alisha N Clark
PY - 2026
DA - 2026/10/01
JO - The journal of physical chemistry. B
DO - 10.1021/acs.jpcb.6c02141
UR - https://europepmc.org/article/MED/42917240
AB - The short-range to mid-range structure of inorganic glasses profoundly impacts their physical properties. In this work, we have used multiple spectroscopic methods to examine the change in the network structure of amorphous silica with addition of Cl. Unlike analogous F-doped silicas, where the bonding of halogen leads to terminal Si-F groups, NMR and Raman data for Cl-doped v-SiO2 indicate bridging between silica tetrahedra, preserving rather than reducing network connectivity and contributing to their elastic stiffness and viscosity behaviors. These bridging Cl atoms make v-SiO2 stiffer while having the same effect on density behavior per mol % dopant as F in v-SiO2 and thus may be a desirable attribute in tailoring v-SiO2 for optical applications.
SN - 1520-6106
SN - 1520-5207
ER -