Results 151 to 160 of about 3,970 (183)

Modification of CdTe quantum dots as temperature-insensitive bioprobes

Talanta, 2008
CdTe quantum dots (QDs) were synthesized in aqueous solution with 3-mercaptopropionic acid (MPA) as the stabilizer. The photoluminescence (PL) of CdTe QDs (3.5nm) is found to be temperature-dependent: as the temperature arising from 278K to 323K, the PL intensity declines to 50.2% of its original and PL emission peak shows obvious red-shift ...
Jian-Hao, Wang, Hai-Qiao, Wang, Yong-Qiang, Li, Hai-Li, Zhang, Xiu-Qing, Li, Xiao-Feng, Hua, Yuan-Cheng, Cao, Zhen-Li, Huang, Yuan-Di, Zhao   +8 more
openaire   +2 more sources

Exciton Spectroscopy of Single CdTe and CdMnTe Quantum Dots

physica status solidi (b), 2002
Single dot optical spectroscopy results obtained for CdTe and CdMnTe self-assembled quantum dots in ZnTe matrix are reported. In order to resolve the emission from individual dots apertures with diameter below 200 nm were opened in a metal masks. In the case of CdTe dots, sharp emission lines with a linewidth below 200 μeV were observed.
Mackowski, S., Wrobel, J., Fronc, K., Kossut, J., Pulizzi, F., Christianen, P.C.M., Maan, J.C., Karczewski, G.   +7 more
openaire   +2 more sources

The Interactions of Glutathione-Capped CdTe Quantum Dots with Trypsin

Biological Trace Element Research, 2011
Due to their unique fluorescent properties, quantum dots present a great potential for biolabelling applications; however, the toxic interactions of quantum dots with biopolymers are little known. The toxic interactions of glutathione-capped CdTe quantum dots with trypsin were studied in this paper using synchronous fluorescence spectroscopy ...
Bingjun, Yang, Rutao, Liu, Xiaopeng, Hao, Yongzhong, Wu, Jie, Du   +4 more
openaire   +2 more sources

Photochemical properties of a myoglobin–CdTe quantum dot conjugate

Chemical Communications, 2012
A myoglobin-cadmium telluride quantum dot conjugate was constructed using an artificial heme modified with a thiol moiety as a linker. Irradiation of the myoglobin-cadmium telluride conjugate generated the photoreduced ferrous myoglobin via an electron transfer from the photoexcited quantum dot, leading to the formation of CO-bound myoglobin under a CO
Akira, Onoda, Tomoki, Himiyama, Kei, Ohkubo, Shunichi, Fukuzumi, Takashi, Hayashi   +4 more
openaire   +2 more sources

Quantum-confined Franz-Keldysh effect in CdTe quantum dots in glass

Optics News, 1989
Microcrystallites of CdTe were grown in a special-formula glass, yielding the first reported CdTe dots (ro ≅ 36Å). As many as six quantum-confinement peaks1 have been seen in the linear absorption spectrum. These quantum dots are especially suited for electric-field effects because of CdTe′s large Bohr radius (aB ≅ 73 Å).
V. Esch, G. Khitrova, H. M. Gibbs, Xu Jiajin, L. C. Liu, S. H. Risbud   +5 more
openaire   +1 more source

Size of CdTe Quantum Dots Controls the Hole Transfer Rate in CdTe Quantum Dots–MEHPPV Polymer Nanoparticle Hybrid

The Journal of Physical Chemistry C, 2016
Design of light harvesting systems using inorganic–organic hybrid nanostructures is an emerging field of research. Here, we design hybrid nanostructures by using electrostatic attraction of negatively charged CdTe QDs with positively surface functionalized poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEHPPV) polymer nanoparticles for ...
Bikash Jana, Arnab Ghosh, Sourav Maiti, Dipankar Bain, Susanta Banerjee, Hirendra N. Ghosh, Amitava Patra   +6 more
openaire   +1 more source

Low‐temperature near‐field spectroscopy of CdTe quantum dots

Journal of Microscopy, 2001
A near‐field optical microscope has been developed for operation at low temperature. This microscope is used to study the photoluminescence of CdTe‐based quantum dots. Spectra collected upon approaching the optical tip into the near‐field region of the sample reveal the evolution from a broad far‐field luminescence band − that is typical for a large ...
Brun, M., Huant, S., Woehl, J., Motte, J.-F., Marsal, L., Mariette, H.   +5 more
openaire   +2 more sources

Magnetopolaron effect in CdTe cylindrical quantum dot

Journal of Applied Physics, 2000
This study analyzes the role of the magnetic field and the polaron effect on the binding energy of shallow donor impurities in a cylindrical quantum dot (QD), where the magnetic field is applied in the axial direction. The interactions of carrier charges (electron and ion) with the confined longitudinal optical phonons as well as the side surface and ...
R. Charrour, M. Bouhassoune, M. Fliyou, D. Bria, A. Nougaoui   +4 more
openaire   +1 more source

Quantum size effect of CdTe and CdTe/CdS quantum dots

Infrared and Laser Engineering, 2017
常存 Chang Cun, 高莹 Gao Ying, 孔德贵 Kong Degui, 张东帅 Zhang Dongshuai, 常青 Chang Qing   +4 more
openaire   +1 more source

Stokes shift in cdte quantum dots

Journal of Physical Studies, 2010
I. M. Kupchak, D. V. Korbutyak, S. M. Kalytchuk, Yu. V. Kryuchenko, A. Chkrebtii   +4 more
openaire   +1 more source