By USing cyanoaromatic sensitizers,some alkenes,alkyties sulfides,and OXiranes which donot undergo photooxidation with singlet oxygen(~1O_2)may react readily w
The syntheses of pyridinium of 8,9,16,17-tetradehydro-6,14-dithiono-7,8,15,16-tetraza-5,13-dioxa-6,14-diphospha-dibenzo [a,h] tetradecahydroanthracene-6,14-dit
Patterned porous silicon (P S) films were synthesised by using hydrogen ion implantation technique and typical electrochemical anodic etching method. The surfac
Introduction of 7-methyl group into the steroid molecule usually causes enhancementand/or modification of parent hormonal activity.For example,7α,17α-dimethy
A kinetic ESR study(flow-stop method)was performed on the redox reaction betweenascorbic acid(1)and 4-hydroxy-2,2,6,6-tetramethylpiperidinyl-1-oxy radical(6)in