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Official Journal of the Japan Wood Research Society

Table 1 Characteristics of cis and trans isomers of FBD and PFBD in aqueous solution

From: A novel polymeric fluorescent brightener agent based on 4,4′-diamino-stilbene-2,2′-disulfonic acid-triazine structure: synthesis, characterization, photo-property, and performance on paper as light stabilizer, fluorescent brightener, and surface-sizing agent

 

Cis isomers, λ A (nm)

Trans isomers, λ A (nm)

λ F (nm)

Δσ (cm−1)

Φ F

E F

FBD

375

448

5927.2

0.226

0.179

PFBD

366

446

5279.3

0.382

0.309

  1. FBD: DSD acid-triazine fluorescent monomer, PFBD polymeric fluorescent brightener agent based on DSD acid-triazine structure