Ultra-thin crystalline films of CdSe and CuSe formed at the organic-aqueous interface |
| |
Authors: | Kalyanikutty K P Gautam Ujjal K Rao C N R |
| |
Affiliation: | Chemistry and Physics of Materials Unit, DST Nanoscience Unit and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bangalore 560064, India. |
| |
Abstract: | Two-dimensional nanostructures in the form of ultra-thin crystalline films of CdSe and CuSe have been prepared at the organic-aqueous interface by reacting toluene solutions of metal cupferronates with an aqueous solution of N,N-dimethyl selenourea. The films have been examined using electron microscopy and optical spectroscopy. At lower concentrations of the reacting species, the CdSe films formed at the toluene-water interface at approximately 30 degrees C consisted mostly of nanocrystals. With increase in concentration as well as temperature, the interface reaction yielded thicker films which are mostly single-crystalline. We have studied the time-dependent growth of the CdSe film at the interface using UV-visible absorption spectroscopy. Ultra-thin films of CuSe formed at the toluene-water interface are generally single-crystalline. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|