Issue 6, 1987
From the journal:

Journal of the Chemical Society, Perkin Transactions 2

Near-infrared absorbing methine dyes based on dicyanovinyl derivatives of indane-1,3-dione

Kasali A. Bello,   Lubai Cheng  and  John Griffiths  

Abstract

The synthesis, colour, and constitution of methine dyes formed by condensation of benzaldehydes and nitrosobenzenes with dicyanovinyl analogues of indane-1,3-dione have been investigated. 3-Dicyanovinylindan-1-one (3) and 1,3-bisdicyanovinylindane (5) give magenta (λmax.ca. 560 nm) and blue (λmax.ca. 600 nm) dyes respectively with 4-dialkylaminobenzaldehydes. Aza analogues formed from (3) and (5) and 4-dialkylaminonitrosobenzenes are significantly more bathchromic, and the exceptional shift in the case of dyes formed from (5)(ca. 150 nm) permits the synthesis of a new class of dyes absorbing in the near-i.r. region, with absorption maxima in the range 700–850 nm.

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Article information

DOI
https://doi.org/10.1039/P29870000815
Article type
Paper

J. Chem. Soc., Perkin Trans. 2, 1987, 815-818

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Near-infrared absorbing methine dyes based on dicyanovinyl derivatives of indane-1,3-dione

K. A. Bello, L. Cheng and J. Griffiths, J. Chem. Soc., Perkin Trans. 2, 1987, 815 DOI: 10.1039/P29870000815

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