Patent · US Expired

Stable near-infrared (NIR) marker dyes based on benzopyrylium-polymethines

US6750346B2 · kind B2 · utility

3Cited by

1References

8Claims

0Family size

Assignee

Carl Zeiss Jena GmbH · DE

Inventors

Peter T. Czerney · Weimar, DE
Frank G. Lehmann · Jena, DE
Bernd G. Schweder · Jena, DE
Matthias S. Wenzel · Jena, DE

Key dates

Filing date	Jan 22, 2002
Grant date	Jun 15, 2004
Priority date	—
Expiry date	Jan 22, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12Q2563/107
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The disclosure is directed to so-called laser-compatible NIR marker dyes based on polymethines for use in optical, in particular, fluorescence optical determination and detection methods, for example, in the fields of medicine, pharmaceutics and in the areas of life science, materials science and environmental science. The disclosure further discusses the aim of the invention which was to create NIR marker dyes based on polymethine which have a high degree of photostability and stability in storage as well as a high fluorescent yield and which can be excited to fluorescence in the easiest possible manner by means of laser radiation in the visible or NIR spectral range, particularly with light of an argon, helium/neon, or diode laser. Dyes based on polymethine of general formula (I) are used.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.