Ultrafast infrared spectroscopy reveals the structural and dynamical heterogeneity of glassy materials
Abstract/Contents
- Abstract
- The remarkable properties of glassy materials arise from their complex amorphous structures and dynamics. The heterogeneity of these materials was studied on molecular length scales and picosecond time scales using a combination of polarization-selective IR pump-probe and 2D IR experiments and a vibrational chromophore that is sensitive to local chemical and electrical environments. By monitoring the restricted orientational motion of the chromophore in a polymer, the distribution of sub-nanometer pores could be explored. The same chromophore in a hydrogen-bonding system showed extreme polarization dependence in the 2D line shape, providing evidence for significant dynamical heterogeneity in the supercooled liquid phase.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Hoffman, David John |
|---|---|
| Degree supervisor | Fayer, Michael D |
| Thesis advisor | Fayer, Michael D |
| Thesis advisor | Moerner, W. E. (William Esco), 1953- |
| Thesis advisor | Zare, Richard N |
| Degree committee member | Moerner, W. E. (William Esco), 1953- |
| Degree committee member | Zare, Richard N |
| Associated with | Stanford University, Department of Chemistry |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | David J. Hoffman. |
|---|---|
| Note | Submitted to the Department of Chemistry. |
| Thesis | Thesis Ph.D. Stanford University 2020. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by David John Hoffman
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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