Portal de Periódicos da CAPES

Highly Efficient Dual-Color Electrochemiluminescence from BODIPY-Capped PbS Nanocrystals

2015; American Chemical Society; Volume: 137; Issue: 35 Linguagem: Inglês

10.1021/jacs.5b07633

1943-2984

Mahdi Hesari, Kalen N. Swanick, Jiasheng Lu, Ryan Whyte, Suning Wang, Zhifeng Ding,

Quantum Dots Synthesis And Properties

Electrochemiluminescence (ECL) of a hybrid system consisting of PbS nanocrystals (NCs) and a BODIPY dye (BDY) capping ligand was discovered to produce highly efficient dual emissions with tri-n-propylamine as a coreactant. By means of spooling ECL spectroscopy, the strong dual ECL emission peaks of 984 and 680 nm were attributed to the PbS and BDY moieties, respectively, and found to be simultaneous during the light evolution and devolution. The ECL of the PbS was enhanced via NC collisions with the electrode and reached an efficiency of 96% relative to that of Ru(bpy)3(2+), which is the highest among the semiconductor NCs.