Dendron-tethered and templated CdS quantum dots on single-walled carbon nanotubes.
CdS nanoparticles on the surface of single-walled carbon nanotubes (SWNTs) were templated and stabilized through the initial attachment of 1 --> 3 C-branched amide-based dendrons and were both photophysically and morphologically characterized. The CdS clusters were shown to be ca. 1.4 nm in diameter as calculated from their optical absorption spectra and exhibited reduced fluorescence emission intensity at 434 nm compared to that of CdS quantum dots stabilized by untethered dendrons due to partial emission quenching by the SWNT. Unchanged UV absorption behavior of these materials indicated that they are stable > 90 days at 25 degrees C.
Hwang
Seok-Ho
SH
Department of Polymer Science, The University of Akron, Akron, Ohio 44325-3909, USA.
Moorefield
Charles N
CN
Wang
Pingshan
P
Jeong
Kwang-Un
KU
Cheng
Stephen Z D
SZ
Kotta
Kishore K
KK
Newkome
George R
GR