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Synfacts 2011(8): 0840-0840  
DOI: 10.1055/s-0030-1260701
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

Selective NIR-Absorbing Dyes

Contributor(s): Timothy M. Swager, Jan M. Schnorr
G. M. Fischer, E. Daltrozzo, A. Zumbusch*
Universität Konstanz, Germany
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Publikationsdatum:
20. Juli 2011 (online)

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Significance

Near-infrared (NIR) dyes that do not absorb in the visible range have potential as heat-blocking window coatings, laser-protecting glasses or as antiforgery markers. The authors present the synthesis of a series of NIR-absorbing bis(pyrrolo­pyrrole) cyanine dyes (4 and 5 as well as derivatives with different side and end groups) that meet these criteria.