Document Type
Article
Publication Date
4-17-2003
Journal or Book Title
The Journal of Physical Chemistry B
Volume
107
Issue
15
First Page
3384
Last Page
3389
DOI
10.1021/jp0267095
Abstract
A new series of anhydrous protonated chalcogenide glasses, xH2S + (1 − x)B2S3, analogous to alkali-modified glasses, have been prepared. The preparation of these glasses was carried out in multiple steps. First crystalline meta-thioboric acid, c-(HBS2)3, was prepared from vitreous boron sulfide, v-B2S3. c-(HBS2)3 was then used as a precursor for protonation to prepare a series of xH2S + (1 − x)B2S3 samples with 0.0 ≤ x ≤ 0.5. The glass formation region of this system was found to be 0.0 ≤ x ≤ 0.25. The density and glass-transition temperature (Tg) of the samples were measured. While a substantial decrease in Tg of the protonated glasses has been observed, there are insignificant changes in the density of the glasses. The IR and NMR spectra of the samples in the region 0.0 ≤ x ≤ 0.5 suggest that no tetrahedral borons are formed with the incorporation of protons. The characterization shows that these materials are unique and exhibit no borate anomaly as in the alkali-modified glasses.
Copyright Owner
American Chemical Society
Copyright Date
2003
Language
en
File Format
application/pdf
Recommended Citation
Karthikeyan, Annamalai; Martindale, Chad A.; and Martin, Steve W., "New Protonated Thioborate Glasses in the xH2S + (1 − x)B2S3 Series" (2003). Materials Science and Engineering Publications. 58.
https://lib.dr.iastate.edu/mse_pubs/58
Comments
Reprinted with permission from The Journal of Physical Chemistry B 107 (2003): 3384–3389, doi:10.1021/jp0267095. Copyright 2003 American Chemical Society.