Synthesis and Characterization of Cd−DMSO Complex Capped CdS Nanoparticles
Synthesis and Characterization of Cd−DMSO Complex Capped CdS Nanoparticles
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DOI：
10.1021/cm020761w
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发表时间：
2003-02
影响因子：
8.6
通讯作者：
Manoj E. Wankhede and;S. Haram
中科院分区：
文献类型：
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作者：
Manoj E. Wankhede and;S. Haram
我们在此报告了在二甲基亚砜 (DMSO) 中制备颗粒后，用 Cd-DMSO 复合物对硫化镉纳米颗粒 (Q-CdS) 进行封端。 Q-CdS 的 UV−vis 中 367 nm 处的特征尖峰显示出约 100 nm 的逐渐蓝移。 41 nm，表明颗粒尺寸随着时间的推移而减小，而不是预期的絮凝红移。颗粒的侵蚀归因于 CdS 与 DMSO 反应形成 Cd-DMSO 复合物。记录的絮凝 Q-CdS 的 FTIR 光谱在 617、800、1109、1261、1408 和 1561 cm-1 处出现主峰，这归因于颗粒表面上存在 Cd-DMSO 络合物和乙酸根离子。颗粒缔合 DMSO 的 SO 伸缩频率的反斯托克斯位移表明键合是通过硫部分进行的。根据热和退火后红外光谱分析的结果，推断在颗粒表面形成了稳定的 Cd-DMSO 复合物。观察到的溶液稳定性归因于...
We report here the capping of cadmium sulfide nanoparticles (Q-CdS) with a Cd−DMSO complex as a consequence of particle preparation in dimethyl sulfoxide (DMSO). A characteristic sharp peak at 367 nm in the UV−vis for Q-CdS showed a gradual blue shift of ca. 41 nm, indicating the decrease in the particle size with time instead of the expected red shift for flocculation. Erosion of the particles was attributed to the reaction of CdS with DMSO to form a Cd−DMSO complex. FTIR spectra recorded for flocculated Q-CdS gave major peaks at 617, 800, 1109, 1261, 1408, and 1561 cm-1 which were attributed to the presence of Cd−DMSO complex and acetate ions on the particle surface. The anti-stoke shift of SO stretching frequency for particle-associated DMSO indicated that the bonding is through a sulfur moiety. On the basis of results from thermal and postannealed IR spectral analyses, the formation of a stable Cd−DMSO complex on the particle surface was inferred. The observed solution stability was attributed to the ...