Abstract

In order to study the phototropism exhibited by certain monoazo dyes more completely, a shutter and a sample illuminator were constructed for use with a Cary Recording Quartz Spectrophotometer. By use of this device the dye solutions can be exposed to a strong light source during the dark periods of the chopping shutter of the instrument. In this way solutions which show a very rapid phototropic change can be studied.

© 1952 Optical Society of America

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References

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  1. G. M. Wyman and W. R. Brode, J. Am. Chem. Soc. 73, 1487 (1951).
    [Crossref]
  2. W. R. Brode and G. M. Wyman, J. Research Natl. Bur. Standards 47, 170 (1951).
    [Crossref]
  3. Brode, Gould, and Wyman, J. Am. Chem. Soc.74 (to be published).

1951 (2)

G. M. Wyman and W. R. Brode, J. Am. Chem. Soc. 73, 1487 (1951).
[Crossref]

W. R. Brode and G. M. Wyman, J. Research Natl. Bur. Standards 47, 170 (1951).
[Crossref]

Brode,

Brode, Gould, and Wyman, J. Am. Chem. Soc.74 (to be published).

Brode, W. R.

G. M. Wyman and W. R. Brode, J. Am. Chem. Soc. 73, 1487 (1951).
[Crossref]

W. R. Brode and G. M. Wyman, J. Research Natl. Bur. Standards 47, 170 (1951).
[Crossref]

Gould,

Brode, Gould, and Wyman, J. Am. Chem. Soc.74 (to be published).

Wyman,

Brode, Gould, and Wyman, J. Am. Chem. Soc.74 (to be published).

Wyman, G. M.

W. R. Brode and G. M. Wyman, J. Research Natl. Bur. Standards 47, 170 (1951).
[Crossref]

G. M. Wyman and W. R. Brode, J. Am. Chem. Soc. 73, 1487 (1951).
[Crossref]

J. Am. Chem. Soc. (1)

G. M. Wyman and W. R. Brode, J. Am. Chem. Soc. 73, 1487 (1951).
[Crossref]

J. Research Natl. Bur. Standards (1)

W. R. Brode and G. M. Wyman, J. Research Natl. Bur. Standards 47, 170 (1951).
[Crossref]

Other (1)

Brode, Gould, and Wyman, J. Am. Chem. Soc.74 (to be published).

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Figures (3)

Fig. 1
Fig. 1

Shutter assembly shown with the inner rotating part A removed.

Fig. 2
Fig. 2

The shutter assembly and the lamp house F in place in the instrument.. The phototube-preamplifier housing has been removed from the instrument.

Fig. 3
Fig. 3

The absorption spectrum of 4-dimethylaminoazobenzene dissolved in benzene. Concentration 0.0067 g/1; cell length 2.00 cm. Curve 1 —— after dark storage; curve 2 – – – – after exposure to light filtered by C. G. No. 397; curve 3 ⋯⋯ after exposure to light filtered by C. G. No. 585.