| 摘要 |
Photographic material, with a base and layer(s) of spectrally-sensitized silver halide emulsion(s), contains optionally ring-substituted 2,5-dihydroxyphenyl-triphenylphosphonium compound(s) (I). Photographic material, with a base and layer(s) of spectrally-sensitized silver halide emulsion(s), contains optionally ring-substituted 2,5-dihydroxyphenyl-triphenylphosphonium compound(s) of formula (I). R<1>, R<2> = hydrogen (H), alk(en)yl, ar(alk)yl or heterocyclyl or together complete a condensed 5-7-membered carbocyclic ring; R<3> = H, alk(en)yl, ar(alk)yl or heterocyclyl; Ar<1>, Ar<2>, Ar<3> = phenyl or p-tolyl; X, Y = hydroxyl (OH) or in one case O<->; n = the charge +1 or 0; Z = an ion to balance the charge and is absent if n = 0.
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