Next Article in Journal
Synthesis of the Demospongic Compounds, (6Z, 11Z)-Octadecadienoic Acid and (6Z, 11Z)-Eicosadienoic Acid
Previous Article in Journal
10-Undecenoic Acid, an Inexpensive Source for the Synthesis of the Pheromones of Cotton Pests, Peach Tree Borer and Cherry Tree Borer
Molecules 1997, 2(6), 91-98; doi:10.3390/20600091

Synthesis and Characterization of Heptamethine Cyanine Dyes

*,  and
Institute of photographic chemistry, The Chinese Academy of Sciences, Beijing 100101, China
* Author to whom correspondence should be addressed.
Received: 20 March 1997 / Accepted: 11 April 1997 / Published: 11 June 1997
Download PDF [45 KB, uploaded 18 June 2014]


A series of meso-chlorine substituted heptamethine-cyanine dyes and related heptamethine cyanine dyes unsubstituted on the vinyl chain were synthesized by condensation of 2,3,3-trimethyl indolenium salts with reactive intermediates, 2-chloro-formyl-3-hydroxy-methylenecyclohexene or N-[5-(phenylamino)-2,4-phentadienylidene] aniline monohydro-c hloride. The structures of the dyes were characterized by virtue of 1HNMR, 13C-NMR, IR, MS, etc. The reaction conditions and physicochemical properties of the dyes were extensively explored with classical photo-physical techniques
Keywords: Synthesis; cyanine dye; infrared dye; indotricarbocyanine dye Synthesis; cyanine dye; infrared dye; indotricarbocyanine dye
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Li, Q.; Tan, J.; Peng, B.-X. Synthesis and Characterization of Heptamethine Cyanine Dyes. Molecules 1997, 2, 91-98.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert