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[×ÊÔ´] һƪÁ¿×ӵ㻯ѧ·¢¹âºÃÎÄÕÂ....Quantum dot chemiluminescence!

Reported the first observation of band gap chemiluminescence of semiconductor quantum dots in solution and in nanoparticulate layers. The
spectral position of the band gap chemiluminescence of CdSe/CdS core shell and InP nanocrystals depends on their particle size, allowing
thus an efficient tuning of the emission color with superior color purity inherent for monodisperse samples. The efficiency of nanocrystal
chemiluminescence can be dramatically enhanced by applying a cathodic potential to the nanoparticulate layers made from CdSe or CdSe/
CdS core-shell nanocrystals. In this case electrochemical n-doping of the particles via electron injection provides a ¡°quantum confined
cathodic protection¡± against nanocrystal oxidative corrosion upon hole injection and allows the achievement of efficient and stable
electrogenerated chemiluminescence.
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NANO
LETTERS
2004
Vol. 4, No. 4
693-698
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2Â¥2007-07-26 13:34:54
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