Abstract
Silver bromoiodide photographic emulsions were precipitated using water-soluble aryl disulfides. The emulsions studied were sub-micron regular (nontabular) crystals containing less than 5% iodide, precipitated with ammonia and/or thioether. When compared to their para-substituted counterparts, water-soluble ortho-substituted aryl disulfides provided improved monodispersity along with no observed formation of large tabular grains. A proposed mechanism for the decreased ripening effect of the ortho-substituted isomer involved an in situ reduction of the disulfide to a ring-closed species that did not interact with silver ion.
| Original language | English |
|---|---|
| Pages (from-to) | 529-533 |
| Number of pages | 5 |
| Journal | Journal of Dispersion Science and Technology |
| Volume | 25 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jul 2004 |
| Externally published | Yes |
Keywords
- Disulfides
- Grain-size distributions
- Monodispersed crystals
- Ortho-substituted aryl
- Silver halide emulsions