White light sensitivity

The photoconductivity of organic dyes, especially phthalocyanine pigments, could be utilized to provide reusable or non-reusable electrophotographic plates having sensitivities that extend over the entire visible spectrum and produce high-contrast images 167,168) Microcrystalline dispersions of metal-free phthalocyanine in suitable binders have a white-light sensitivity equal to that of selenium 169> and can be incorporated into coated papers and drums. 

In the pure state, strychnine consists of a white, light-sensitive, crystalline powder with a melting point of286°C. It is only sparingly soluble in water, but has an extremely bitter taste which can be detected at concentrations of about 8 ppm. It is, however, highly soluble in alcohol and its optical activity is such that a solution of... 

White, light-sensitive powder. Insoluble in HgO decomposes in HgO and alcohol. Completely soluble in CH3COOH. Does not melt on heating, but volatilizes with decomposition, d 5.38. 

White, light-sensitive crystal flakes (tinged with gray). Solubility (15°C) 0.75 g./lOO ml. HgO. On boiling and in light the compound in solution disproportionates to Hg and Hg (11) acetate the mercuric salt then hydrolyzes to a yellow, insoluble basic salt. Readily soluble in dilute acetic acid, insoluble in alcohol and ether. Decomposes on heating, forming a residue of black flakes. 

Near-zero electron affinity for p-type GaAs results from a fortuitous match between the work function of Cs and the bandgap of GaAs (both at 1.4 eV) fora case where the Fermi level in the bulk is located c below the bottom of the conduction band. This was observed prior to fabrication of the first NEA photocathode, p-type GaAs/Cs [5.66] after construction, the experimentally measured quantum efficiency per absorbed photon was in the order of 0.2 for energies above 2eV. A sharp response cuton at 1.4 eV gave a white light sensitivity of about 500 pA/lm - immediately superior to the classic S-20 surface [5.66]. 

NEt4][W(PhCCPh)3SnPh3] White Light-sensitive... 

AgPh is a colourless solid [144] that is rather insoluble in non-donor solvents and appears to be polymeric (AgPh) (n > 10) in addition mixed compounds (AgPh) .AgN03 (n = 2,5) can also be obtained that involve silver clusters. Mesitylsilver is a thermally stable (but light-sensitive) white crystalline solid in the solid state it is tetrameric (in contrast to the pentameric copper and gold analogues) ... 

The tint plate produces a retardation of about 570 millimicrons, so that the yellow components of white light vanish. The resulting colour of violet-red (or sensitive violef) is changed when an extra retardation is introduced by the strained glass. The eye is very... 

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