TERRYLENIMIDES - NEW NIR FLUORESCENT DYES

Citation
Fo. Holtrup et al., TERRYLENIMIDES - NEW NIR FLUORESCENT DYES, Chemistry, 3(2), 1997, pp. 219-225
Citations number
28
Categorie Soggetti
Chemistry
Journal title
ISSN journal
09476539
Volume
3
Issue
2
Year of publication
1997
Pages
219 - 225
Database
ISI
SICI code
0947-6539(1997)3:2<219:T-NNFD>2.0.ZU;2-A
Abstract
Terrylenimides 3 and 4 represent a new class of blue colorants, exhibi ting absorption maxima at 650 to 700 nm and fluorescence emissions in the NIR region (673 to 750 nm). The terrylenimides were synthesized by means of various organometallic coupling reactions, catalyzed by tran sition metal complexes (Ni-0, Pd-0) and starting from the aromatic bro mides, boronic acids, or organotin compounds. The terrylenimides have all the properties expected of excellent fluorescent dyes: high extinc tion coefficients, high fluorescence quantum yields, and very good the rmal, chemical, and photochemical stabilities. Owing to its extended p i system, 3 can reversibly accept four negative charges. By varying th e substituents, 3 and 4 can be modified to serve either as soluble dye s or as insoluble pigments.