Interfacial Self-assembly of NixCd1鈥?i>xS/ODA Hybrids with Photoluminescent and Superhydrophobic Performance

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• 作者：Yan Zhang ; Qiang Zhang ; Cai-Feng Wang ; Su Chen
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：August 21, 2013
• 年：2013
• 卷：52
• 期：33
• 页码：11590-11596
• 全文大小：517K
• 年卷期：v.52,no.33(August 21, 2013)
• ISSN：1520-5045

文摘

We report herein a simple strategy for fabricating two-dimensional (2D) petal-like Ni_xCd_1鈥?i>xS/octadecylamine (ODA) hybrids exhibiting both photoluminescent and superhydrophobic properties via a facile liquid鈥搇iquid interfacial self-assembly technique. First, thioglycolic acid stabilized CdS quantum dots (QDs) doped with nickel were synthesized in aqueous solution. Then, relying on the facile H₂O/CHCl₃ interfacial platform, through the electrostatic interactions between positively charged amino groups of ODA and negatively charged carboxyl groups of a QD surface, we have successfully fabricated petal-like Ni_xCd_1鈥?i>xS/ODA hybrids. These Ni_xCd_1鈥?i>xS/ODA hybrids present enhanced photoluminescence compared with Ni_xCd_1鈥?i>xS QDs, especially in high quantum yield, which is enhanced from 3% to 50%. Moreover, the Ni_xCd_1鈥?i>xS/ODA hybrid film has a water contact angle of 152.7掳, leading to its excellent hydrophobic property. Finally, by virtue of their excellent polymer compatibility and optical properties, we extended the robust QDs as 鈥渇luorescent ink鈥?to print elegant photoluminescent patterns by silk-screen printing.