Abstract Sol–gel formulations were applied to replace silicone as matrix material for phosphors in pc-LEDs. The content of organic groups was minimized order reduce yellowing during the operation elements. It possible evenly embed YAG:Ce particles sol–gel binders. Further processing on LED chips resulted operational light sources; and their performance compared standard silicone-based Additiona...

Compared to amines as coinitiators applied in photopolymerization, benzodioxole derivatives exhibit similar reactivity but less yellowing and lower toxicity. In this paper, a series of unimolecular type II photoinitiators, containing coumarins chromophores benzodioxoles coinitiators, were synthesized. The substituents with different electron donating/withdrawing abilities designed for systemati...

petri disease is responsible for grapevine decline and occurs wherever grapevines (vitis vinifera) are cultivated. phaeoacremonium species are among the principal hyphomycetes associated with petri disease. during 2009, a field survey was conducted throughout different vineyards in the fars province of iran in order to determine the fungal pathogens associated with the vine decline observed in ...