| 摘要 |
PURPOSE:To enable optical recording of high sensitivity within a blue light region by forming the recording layer formed on a transparent substrate and enabling the optical recording and reproduction of data from a specific porphyrine derivative and a polymer having a molecular structure having orientation capacity with respect to the prophyrine derivative in its side chain. CONSTITUTION:An optical recording medium performing the recording and reproduction of data by the irradiation with laser beam is obtained by forming a recording layer enabling the optical recording and reproduction of data on a transparent substrate. This recording layer is formed from a porphyrine derivative represented by formula 1418 [wherein A<1>-A<4> and B<1>-B<8> are hydrogen, a phenyl group, an alkyl group or a cyclic hydrocarbon group, B<n>-B<n+1> (n: 1,3,5,7) may be bonded in a cyclic form by C4H4 and M is two or four protons or one metal atom] and a polymer having a molecular structure having orientation capacity in its side chain. In this optical recording layer optical recording high in sensitivity within a blue light region is enabled by utilizing a large absorbing member. |
