Photocytotoxic ternary copper(II) complexes of histamine Schiff base and pyridyl ligands /SAMYA BANERJEE a , AKANKSHA DIXIT b , K SESHA MAHESWARAMMA a , BASUDEV MAITY a , SANJOY MUKHERJEE a , ARUN KUMAR a , ANJALI A KARANDE b, ∗ and AKHIL R CHAKRAVARTY a, ∗ - BANERJEE,SAMYA