抄録
When 18-crown-6(18C6) was added top p-substituted benzene diazo compounds (SBD) in methanol, λmax of SBD shifted to shorter wavelength, but did not shift in an aqueous solution. Degree of the shift with electron-withdrawing substituent (WSBD) was larger than that with electron-donating substituent (DSBD). WSBD with poor electron density was coordinated by six oxygen atoms of 18C6 more tightly than DSBD. Photo decomposition of SBD with 18C6 in methanol were suppressed through the coordination. Photo decomposition of WSBD were slightly suppressed with polyethylene glycol 300 (PEG), while did not change with β-cyclodextrin (CD). Thermal decomposition of DSBD with 18C6 in methanol and an aqueous solution were suppressed similarly to that of photodecomposition in methanol. Thermal decomposition rate of SBD can be suppressed through the complex formation by adding PEG or CD, and the rate may be accelerated with the coexistence of hydroxy groups. These results indicate that; when DSBD with 18C6 are used for information recording materials, thermal stability will be improved. DSBD with CD will be improved in thermal stability without decreasing sensitivity. When WSBD with CD or PEG were used for acid generators for polymerization, the rate will increase.
