发明授权
US6162520A Optical recording medium and dipyrromethene metal chelate compound for use therein 失效
用于其中的光记录介质和二吡咯亚甲基金属螯合物

Optical recording medium and dipyrromethene metal chelate compound for
use therein
摘要:
A novel optical recording medium having at least a recording layer and a reflective layer on a substrate is herein disclosed, wherein at least one dipyrromethene metal chelate compound represented by formula (1) is contained in the recording layer: ##STR1## wherein R.sub.1 and R.sub.9 are each independently an alkenyl group, an aryl group or a heteroaryl group; R.sub.2 to R.sub.8 are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted alkyl, alkoxy, alkenyl, acyl, alkoxycarbonyl, aralkyl, aryl or heteroaryl group having 20 or less carbon atoms; and M is a transition metal.
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