TY - JOUR
T1 - Tetraethylenepentamine-directed controllable synthesis of wurtzite ZnSe nanostructures with tunable morphology
AU - Xi, Baojuan
AU - Xiong, Shenglin
AU - Xu, Dechen
AU - Li, Jingfa
AU - Zhou, Hongyang
AU - Pan, Jun
AU - Li, Jiangying
AU - Qian, Yitai
PY - 2008/10/29
Y1 - 2008/10/29
N2 - A novel tetraethylenepentamine (TEPA)-directed method has been successfully developed for the controlled synthesis of ZnSe particles with distinctive morphologies, including nanobelts, nanowires, and hierarchically solid/hollow spheres. These structures, self-assembled from nanobelts and nanorods, have been synthesized by adjusting the reaction parameters, such as the solvent composition, reaction temperature, and the aging time. Results reveal that the volume ratio of H2O and TEPA plays a crucial role in the final morphology of ZnSe products. The mechanisms of phase formation and morphology control of ZnSe particles are proposed and discussed in detail. The products have been characterized by means of X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy (TEM), selected area electron diffraction, high-resolution TEM, Raman spectra and luminescence spectroscopy. The as-prepared ZnSe nanoparticles display shape- and size-dependent photoluminescent optical properties. This is the first time to report preparation of complex hollow structures of ZnSe crystals with hierarchy through a simple solution-based route. This synthetic route is designed to exploit a new H2O/TEPA/N2H4·H 2O system possibly for the preparation of other semiconductor nanomaterials.
AB - A novel tetraethylenepentamine (TEPA)-directed method has been successfully developed for the controlled synthesis of ZnSe particles with distinctive morphologies, including nanobelts, nanowires, and hierarchically solid/hollow spheres. These structures, self-assembled from nanobelts and nanorods, have been synthesized by adjusting the reaction parameters, such as the solvent composition, reaction temperature, and the aging time. Results reveal that the volume ratio of H2O and TEPA plays a crucial role in the final morphology of ZnSe products. The mechanisms of phase formation and morphology control of ZnSe particles are proposed and discussed in detail. The products have been characterized by means of X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscopy (TEM), selected area electron diffraction, high-resolution TEM, Raman spectra and luminescence spectroscopy. The as-prepared ZnSe nanoparticles display shape- and size-dependent photoluminescent optical properties. This is the first time to report preparation of complex hollow structures of ZnSe crystals with hierarchy through a simple solution-based route. This synthetic route is designed to exploit a new H2O/TEPA/N2H4·H 2O system possibly for the preparation of other semiconductor nanomaterials.
KW - Hierarchical
KW - Nanobelts
KW - Nanowires
KW - Photoluminescence
KW - Spheres
KW - Tetraethylenepentamine
UR - http://www.scopus.com/inward/record.url?scp=55049117041&partnerID=8YFLogxK
U2 - 10.1002/chem.200801041
DO - 10.1002/chem.200801041
M3 - Article
C2 - 18792043
AN - SCOPUS:55049117041
SN - 0947-6539
VL - 14
SP - 9786
EP - 9791
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 31
ER -