hypochromicity

[‚hī·pə·krə′mis·əd·ē]

(physical chemistry)

A decrease in the absorption of ultraviolet light by polynucleotide solutions due to the formation of an ordered secondary structure.

References in periodicals archive ?

Hypochromicity and red shift of the absorption spectra of Tm(III)-ASA complex were obtained in the presence of DNA which provided an evidence for the new Tm(III)-ASA-DNA complex formation.

Drug Effect of Thulium(III)-Arsenazo III Complex on Herring Sperm DNA

[delta] Hypochromicity [K.sub.b] sub.max] [lambda] (%) ([M.sup.-1]) (nm) (nm) L-Cu(II) 275, 345 3 59.05, 65.45 10.50 L-Co(II) 280, 346 5 3753, 42.18 5.88 L-Ni(II) 275, 344 2 37.53, 58.48 6.81

Evaluation of DNA binding, cleavage, and cytotoxic activity of Cu(II), Co(II), and Ni(II) Schiff base complexes of 1-phenylindoline-2,3-dione with Isonicotinohydrazide

Compared with model compounds, the extinction coefficient of PMKPR is a little lower, which maybe due to the polymer hypochromicity.