Effect of methyl substitution on polyhydroxyamine-linked thioxanthones photoinitiator

Authors
Yang, JW Yang, XM Chen, YL
Citation
Jw. Yang et al., Effect of methyl substitution on polyhydroxyamine-linked thioxanthones photoinitiator, CHEM J CH U, 20(12), 1999, pp. 1965-1968
Citations number
8
Categorie Soggetti
Chemistry
Journal title
CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
ISSN journal
02510790 → ACNP
Volume
20
Issue
12
Year of publication
1999
Pages
1965 - 1968
Database
ISI
SICI code
0251-0790(199912)20:12<1965:EOMSOP>2.0.ZU;2-C
Abstract
The effect of methyl substitution on the molecular conformation and photoch emical properties of 2-(2-hydroxy-3-[bis (2-hydroxyethyl) amino] propoxy) t hioxanthone (HAPTX) was investigated by H-1 NMR, C-13 NMR, UV absorption an d fluorescence spectra, The two methyl groups at 1,3-position of thioxantho nes may interact with 2-alkoxyl group through steric repulsion and lead to the photochemical properties of HAPTX with 1,3-dimethyl substitution differ ent from others.