Tetrahedron

Syntheses and spectroscopic properties of energy transfer systems based on squaraines

GS Jiao, A Loudet, HB Lee, S Kalinin, LBÅ Johansson…

Index: Jiao, Guan-Sheng; Loudet, Aurore; Lee, Hong Boon; Kalinin, Stanislav; Johansson, Lennart B.-A.; Burgess, Kevin Tetrahedron, 2003 , vol. 59, # 17 p. 3109 - 3116

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Citation Number: 33

Abstract

The purpose of this project was to prepare fluorescent dyes that could absorb energy at relatively short wavelengths, and fluoresce in the near-IR region. To achieve this, copper- and palladium-mediated C–N couplings were used to prepare the 'cassettes', ie the carbazole derivative 3b and the carbazole-, phenothiazine-, and phenoazine-squaraines 4b– d. These compounds have carbazole, phenothiazine, and phenoazine donor-components ...