New research from CSUEB department of math and computer science accepted for publication

• March 23, 2010 5:00am

Zhi-Ji Cao, affiliated with the department of mathematics and computer science of Cal State East Bay, recently had his research related to the interaction between 1-[p-(dimethylamino) benzoyl]-4’-phenyl-semicarbazide and Cu²⁺, accepted for publication by the  Journal of Luminescence.

A new compound, 1-[p-(dimethylamino)benzoyl]-4’-phenyl-semicarbazide (1) was synthesized and showed highly selective response to Cu²⁺ over other metal ions such as Pb²⁺, Mg²⁺, Fe²⁺, Co²⁺, Zn²⁺, Cd²⁺, Hg²⁺, Ni²⁺, Ca²⁺, Ag⁺, Na⁺, K⁺ and Li⁺. The control compound, 1-[p-(dimethylamino)benzoyl]-4-phenyl-thiosemicarbazide (2), showed different fluorescence spectral response to Cu2+. A 1:1 complex between Cu²⁺ and 1 was formed while 1:1 and 1:2 complexes between Cu²⁺ and 2 were formed. The binding model between the receptor (1 or 2) and Cu²⁺ was supported by IR spectra, mass spectra and computation model. 1 possessed higher selectivity towards Cu²⁺ compared with 2 owing to the difference of complexation ability between urea and thiourea groups.

--Kimberly Legocki