Substituent Effects on the Ultraviolet Absorption Properties of 2,4-Dihydroxy Dibenzophenone.

ABSTRACT: Substituent effects on the ultraviolet absorption properties of 2,4-dihydroxy dibenzophenone were investigated experimentally. Nine compounds of 2,4-dihydroxy dibenzophenone with different substituents were prepared by a solvent-free reaction of benzoyl chloride. The maximum absorption wavelength (λ_max) of these samples was measured, and their UV resistance properties in cotton fabric as well as in polyester were determined. The results show that the λ_max is dependent on the substituents at the benzylidene ring, and both electron donating substituents and electron withdrawing substituents cause a bathochromic shift. The UV resistance of fabric increases with the increase in compound concentration. The dyeing rate of each compound on polyester was higher than that of c

SUBMITTER: Wu F 

PROVIDER: S-EPMC9737593 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature