Synthesis of the Pyridoxal-5-phosphate-rhodamine B Schiff Base and Identification Studies of Cu2+
Schiff base compound BR was synthesized by the reaction of pyridoxal 5-phosphate with rhoda-mine B-hydrazide.The performance of the compound for Cu2+recognition was detected by UV-vis:in acetoni-trile-water(V∶V=1∶1)system,the addition of Cu2+resulted in a new absorption peak at 562 nm,and the absorption intensity increased with the addition of Cu2+.There was a good linear relationship in the range of(0.25-10)× 10-6 mol/L(R 2=0.999 3),and the detection limit was 2.30 × 10-7mol/L.
pyridoxal-5-phosphate-rhodamine B schiff basesynthesisCu2+recognition
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