prov:value
| - The optically readable disk of claim 26, wherein the modified photoreactor is represented by the following formula: ##STR28## wherein R1 is hydrogen, an alkane, an alkene, or an aryl group; wherein R2 is hydrogen, an alkane, an alkene, or an aryl group;wherein R3 is hydrogen, an alkane, an alkene, or an aryl group; and wherein R4 is an aryl, or substituted aryl group. 28.
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