Pyrene-naphthalimide Schiff base as a fluorescent pigment in water-based security ink

A Water-soluble Polylysine-Retinaldehyde Schiff Base

In order to improve the existing models of retinalprotein Schiff bases, a water-soluble polylysine-retinaldehyde imine has been synthesized and its stability assessed under a variety of conditions through changes in the visible absorption spectrum. The compound absorbs at 342 nm and consists of a 90-kDa poly-L-lysine containing a retinal Schiff base in about 2% of the lysyl c-amino ends. Retina...

synthesis of a novel fluorescent schiff base as a possible hg and ag ions selective sensor

Evaluation of Dye and Pigment Based Ink Jet Ink Sets

The development of high performance inkjet printers and inks is advancing rapidly. Manufacturers seem to introduce their new technology inks to the market on an almost daily basis. Chemists in ink laboratories are still fighting with the issue of combining a wide gamut of dye-based inks with the lightfast and weather resistance qualities of pigment-based inks into new-age ink formulations. Thre...

A naphthalimide-based fluorescent sensor for halogenated solvents.

A fluorescent sensor for halogenated solvents termed AMN is reported. AMN shows strong fluorescence in most halogenated solvents (QE > 0.1) but weak fluorescence (QE<0.01) in most non-halogenated solvents. In chlorinated solvents, the fluorescence intensity decreased with the reduction of chlorine content. On the contrary, in brominated solvents the fluorescence intensity increased with the red...

Water-soluble Fluorescent Pigment of the Pseudomonads

metabolites. The Chemical Society, Special Publication No. 5, London, England. KOFFLER, H., EmERSON, R. L., PERLMAN, D., AND BURRIS, R. H. 1945 Chemical changes in submerged penicillin fermentations. J. Bacteriol., 60, 517-548. O'BRIEN, E., WAGMAN, G. H., AND PERLMAN, D. 1952 Synthetic media for growth and streptomycin production by Streptomyces griseus. Bacteriol. Proc., p. 25. PUGH, L., KATZ,...