New Photocleavable Structures, 4
| Autor: | Urs Karl Fischer, Beate Ganster, Robert Liska, Norbert Moszner |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Polymers and Plastics medicine.medical_treatment Organic Chemistry Oxide Photochemistry Photobleaching chemistry.chemical_compound Ultraviolet visible spectroscopy Photopolymer chemistry Polymer chemistry Materials Chemistry medicine Reactivity (chemistry) Absorption (electromagnetic radiation) Dental restoration Photoinitiator |
| Zdroj: | Macromolecular Rapid Communications. 29:57-62 |
| ISSN: | 1022-1336 |
| DOI: | 10.1002/marc.200700620 |
| Popis: | As highly reactive acylphosphine oxide-based photoinitiators (PIs) are limited in the application for dental materials by their absorption behavior, we were interested to prepare acylgermane 1. UV-Vis absorption maximum of the important n-π* transition was red shifted about 30 nm compared to monoacylphosphine oxides. Photo-DSC results with a dental LED lamp showed nearly the same reactivity for 1 compared to camphorquinone (CO), while monoacylphosphine oxides are not reactive. In broadband irradiation experiments, significantly higher reactivity compared to CO was found. Application-oriented tests showed sufficient storage stability of the formulation and excellent photobleaching behavior. |
| Databáze: | OpenAIRE |
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