alkenoxyl group u201d u201c alkenoxy group u201d u201c alkenyloxy group u201d or u201c alkenyloxy group u201d as used herein means an oxygen radical attached to an alkenyl group but is not limited thereto and has 2 to 60 carbon atoms unless otherwise stated the term u201c aryloxyl group u201d or u201c aryloxy group u201d as used herein means an oxygen radical attached to an aryl group but is not limited thereto and has 6 to 60 carbon atoms unless otherwise stated the term u201c aryl group u201d or u201c arylene group u201d as used herein has 6 to 60 carbon atoms but is not limited thereto herein the aryl group or arylene group means a monocyclic and polycyclic aromatic group and may also be formed in conjunction with an adjacent group examples of u201c aryl group u201d may include a phenyl group a biphenyl group a fluorene group or a spirofluorene group the prefix u201c aryl u201d or u201c ar u201d means a radical substituted with an aryl group for example an arylalkyl may be an alkyl substituted with an aryl and an arylalkenyl may be an alkenyl substituted with aryl and a radical substituted with an aryl has a number of carbon atoms as defined herein also when prefixes are named subsequently it means that substituents are listed in the order described first for example an arylalkoxy means an alkoxy substituted with an aryl an alkoxylcarbonyl means a carbonyl substituted.