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Original Articles

Red-Light Sensitivity of Sulphur-Sensitized Silver-Bromide Dispersions and the Effect of Aurous Gold

Pages 187-191 | Received 16 Jun 1972, Published online: 23 Jul 2016
 

Abstract

When silver sulphide is treated with certain aurous gold complexes, silver gold sulphide (AgAuS) is formed. Since the latter has different light absorption properties in the red region of the spectrum, it follows that the spectral sensitivity of sulphur-sensitized silver bromide coatings should be changed on treatment in a gold solution. This effect has been demonstrated.

Résumé

Le sulfure d’argent est transformé en sulfure mixte d’argent et d’or (AgAuS) par certains complexes de 1’01’ aureux. L’absorption de la lumière dans la région rouge du spectre étant différente, il s’ensuit que la sensibilité spectrale de couches de bromure d’argent sensibilisées par sulfuration doit être modifiee par un traitement dans une solution d’or. Cet effet a été demontre.

Zusammenfassung

Wenn Silbersulfid mit bestimmten Gold (I)-Komplexen behandelt wird, bildet sich Silber Gold-Sulfid (AgAuS). Da letzteres im roten Bereich des Spektrums unterschiedliche Lichtabsorptionseigenschaften aufweist, sollte sich die spektrale Empfindlichkeit von schwefelsensibilisierten Silberbromidschichten bei Behandlung mit einer Goldlösung ändern. Diesel’ Effekt wurde nackgewiesen.

Riassunto

Trattando il solfuro di Ag con alcuni complessi dell’oro auroso, si ha la formazione di solfuro di Ag e Au (AgAuS).

Poichè quest’ultimo ha proprietà diverse di assorbimento della luce, special mente nei rigual’di della regione del rosso dello spettro, ne segue che Ie sensibilità spettrale di stese di bromuro di Ag con sensibilizzazione solforante potrebbe essere variata per trattamento con soluzioni di oro.

Questo effetto è stato dimostrato.

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