Mercury sensitized emission reaction

The mercury sensitized emission, (process (b)) from TI and Na vapour has been discussed in Section 6.6.6. The quenching to 63P0 (process (d)) by CO, N2 and N O, NH3 are presented in Section 6.2. In presence of H2, the possible photochemical reactions are... 

Emission (AmaT = 380 nm), assigned to that from the lowest triplet state of water, has been observed following either y-irradiation or mercury sensitization of crystalline H20 or D20.439 For the mercury sensitization a triplet energy-transfer mechanism appears to be operative, while for the y-irradiation the excited state is formed via reaction (88). Photolysis of water adsorbed on various organic materials is observed with short-wavelength u.v. light (A < 250 nm).440... 

This transfer is frequently referred to as a photosensitization reaction, where the quencher Q is sensitized to emission by excitation from M. In certain cases where it is not possible to generate the excited state Q by direct absorption of a photon from an incident light source, it is possible to access Q by energy transfer from a sensitizer. Mercury atoms can in selected cases be used as the sensitizer M. Table 1.2 demonstrates the triplet energies of a series of compounds that are frequently... 

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