The Reaction between Pyrazolones and their Azomethine Dyes

Vittum, Paul W.; Duennebier, Fred C.

doi:10.1021/ja01160a030

“…The dyes used as references for yellow (1), magenta (2), and cyan (3) colour (Figure 1) were prepared according to the procedures reported in the literature [18][19][20][21][22], as described in the Supporting Information (see the Word file "Synthesis and NMR characterisation of the reference dyes"). The molecular structures of the synthesized compounds were checked by recording their 1 H and 13 C NMR spectra (Word file "Synthesis and NMR characterisation of the reference dyes" Supporting Information).…”

Section: Synthesis Of Dyesmentioning

confidence: 99%

Surface-Enhanced Raman Spectroscopy for the Investigation of Chromogenic Motion Picture Films: A Preliminary Study

Longoni

¹

,

Ferretti

²

,

Zucca

³

et al. 2022

Chemosensors

2

0

View full text Add to dashboard Cite

In the present work, surface-enhanced Raman spectroscopy (SERS) is proposed for the identification of dyes in chromogenic films. These substances, which are generated within the film itself during the colour development process, are first studied on reference molecules synthesised for the purpose and, subsequently, on dyes extracted from a chromogenic film. SERS spectroscopy proved to be an efficient technique for their investigation, providing a proof of concept for its applicability for further studies on this complex topic. SERS spectra of the reference molecules were also compared with normal Raman spectra, acquired with a spectrometer based on SSE™ technology. Furthermore, the excellent SERS properties of anisotropic nanomaterials, such as silver nanostars, have been confirmed.

show abstract

Color Photography

Kapecki

¹

,

Rodgers

²

2000

Kirk-Othmer Encyclopedia of Chemical Technology

View full text Add to dashboard Cite

Color photography is the technology by which the visual appearance of a three‐dimensional subject may be reproduced on a two‐dimensional surface having a pleasing balance of brightness, hue, and color. Light capture is primarily effected by silver halide crystals. Integral tri‐color film packs also contain spectral sensitizing dyes and colored masking couplers appropriate to the subtractive primary dyes, filters, and an overcoat. The chromogenic chemistry of the color photography process involves the reactions of p ‐phenylenediamine developers and various couplers. Prototype dye couplers, which often contain an organic ballast to enhance solubility in hydrophobic solvents, colored masking couplers, and development‐inhibitor‐releasing couplers, which carry a silver development inhibitor linked to the film coupling site, are given. Both chromogenic and post‐development film chemistries are described as are the relationships between film speed, light sensitivity, dye stability, image structure, and color reproduction.

show abstract

Color Photography

Kapecki¹,

Rodgers²

2001

Kirk-Othmer Encyclopedia of Chemical Technology

View full text Add to dashboard Cite

Color photography is the technology by which the visual appearance of a three‐dimensional subject may be reproduced on a two‐dimensional surface having a pleasing balance of brightness, hue, and color. Light capture is primarily effected by silver halide crystals. Integral tri‐color film packs also contain spectral sensitizing dyes and colored masking couplers appropriate to the subtractive primary dyes, filters, and an overcoat. The chromogenic chemistry of the color photography process involves the reactions of p ‐phenylenediamine developers and various couplers. Prototype dye couplers, which often contain an organic ballast to enhance solubility in hydrophobic solvents, colored masking couplers, and development‐inhibitor‐releasing couplers, which carry a silver development inhibitor linked to the film coupling site, are given. Both chromogenic and post‐development film chemistries are described as are the relationships between film speed, light sensitivity, dye stability, image structure, and color reproduction.

show abstract

The Reaction between Pyrazolones and their Azomethine Dyes

Cited by 12 publications

References 0 publications

Surface-Enhanced Raman Spectroscopy for the Investigation of Chromogenic Motion Picture Films: A Preliminary Study

Surface-Enhanced Raman Spectroscopy for the Investigation of Chromogenic Motion Picture Films: A Preliminary Study

Color Photography

Color Photography

Contact Info

Product

Resources

About