Absorption Spectra of Organic Dyes Containing Two Chromophores

Interaction of chromophores in dissimilar associates of cationic and anionic polymethine dyes in water

“…(2). The measurements performed in the concentration range of 1" 104--5 9 10 -5 tool L -I for 20 solutions of dye 6 containing only the cations Me4 N+ (1 = 0.2--5.0 cm) show that under these conditions, the Bouger--Beer law is fulfilled.…”

Unsymmetrical squaraine dimer with an extended π-electron framework: An approach in harvesting near infra-red photons for energy conversion

“…One such possibility was reported by Kiprianov [8] who described a bathochromic shift in polymethine dyes containing two chromophores connected via a conjugated moiety. The shift is explained by the extension of the linear conjugated system.…”

The synthesis, structure and spectral properties of new long-wavelength benzodipyrroleninium-based bis-styryl dyes

“…Molecular structures and spectral properties of the compounds containing a polymethine chromophore system were thoroughly investigated [13e16]. A promising approach to design longer-wavelength dyes with advantageous properties consists in the conjugation of two parent "monomeric" polymethine chromophores in one molecule to bis-polymethine dyes [17], which until now have only been sparsely investigated.…”