Preparation of a novel DNA-imprinted sensor based on chitosan and its highly sensitive detection of Pb.

Lead ion is very harmful to the environment, so it is very important to study its detection methods. In this study, a novel electrochemical sensor was constructed by modifying deoxyribonucleic acid (DNA) on the electrode, which can be used for the detection of Pb in the environment. Part of the mixed solution of chitosan (CS) and Pb template ions was dropped onto the surface of a glassy carbon electrode.

High Triplet Energy Level Achieved by Tuning the Arrangement of Building Blocks in Phosphorescent Polymer Backbones for Furnishing High Electroluminescent Performances in Both Blue and White Organic Light-Emitting Devices.

A high triplet energy level (E) of ca. 2.83 eV has been achieved in a novel polymer backbone through tuning the arrangement of two kinds of building blocks, showing enhanced hole injection/transporting capacity.