物理化学学报 >> 2002, Vol. 18 >> Issue (03): 284 -288 .doi: 10.3866/PKU.WHXB20020320

研究简报 上一篇    

自组装膜吸附钯的化学镀前活化研究

徐丽娜;徐鸿飞;周凯常;徐爱群;岳增全;顾宁;张海黔;刘举正;陈坤基   

  1. 东南大学分子与生物分子电子学国家教委重点实验室,东南大学化学化工系;东南大学分析测试中心,南京 210096;南京大学固体微结构国家重点实验室,南京 210093
  • 收稿日期:2001-08-18 修回日期:2001-12-02 发布日期:2002-03-15
  • 通讯作者: 徐丽娜 E-mail:xulina@sen.edu.cn

Study on a New Activation Method for Initiating Electroless Plating on Alumina Powders Based on SAMs Bonded Palladium

Xu Li-Na;Xu Hong-Fei;Zhou Kai-Chang;Xu Ai-Qun;Yue Zeng-Quan;Gu Ning;Zhang Hai-Qian;Liu Ju-Zheng;Chen Kun-Ji   

  1. State Laboratory of Molecular and Biomolecular Electronics,Department of Chemistry and Chemical Engineering,Center of Analysis and Test,Southeast University,Nanjing 210096;State Key Laboratory of Solid State microstructures,Nanjing University,Nanjing 210093
  • Received:2001-08-18 Revised:2001-12-02 Published:2002-03-15
  • Contact: Xu Li-Na E-mail:xulina@sen.edu.cn

摘要: 提出了一种无需氯化亚锡敏化、基于分子自组装膜(SAMs)吸附钯的活化方法,成功地引发了在氧化铝粉末表面的化学镀铜.用XPS、AES、FTIR研究了钯的吸附机理,认为是由于氯化钯与SAMs上向外突出的氨基形成了化学键,并提出了相应的活化机理.金属化产物经XRD、FTIR、剖面金相显微表征分析与压片电阻率测定,示为金属铜完全包覆氧化铝的复合材料.该活化工艺具有活性引发层厚度薄、寿命长和与基底结合力强等优点,也可应用于其它表面富羟基的基底材料.

关键词: 自组装膜(SAMs), 钯吸附, 活化方法, 氧化铝粉末, 化学镀

Abstract: Electroless plating on nonmetallic species requires the surface to be metallized.Typically the catalytic palladium nuclei are adsorbed on the particles via stannous chloride sensitization.In this paper,a new activation method has been developed for initiating electroless copper plating on alumina powder based on palladium chemisorption on SAMs of 3Aminopropyltriethoxysilane (APTS) in the absence of SnCl2 sensitization.XPS study indicates that chemsorption of palladium on the surfaces was achieved by bonding palladium chloride to the outwards pendant amino group of the SAMs.Therefore,the palladium is not easily to be desorpted.The metallized product was characterized by XRD,FTIR and crosssection metallography.The results showed that alumina was covered by a uniform fccstructured crystalline copper layer about 2 μm thick.This concerned activation method has the advantages of decreasing the thickness of the activation layer,improving the storage life of the activated powders and enhancing adhesion between the deposited metal and the substrate without roughening conditioning.It could also be extended to other substrates with hydroxylated surfaces.

Key words: Selfassembled monolayers (SAMs), Palladium chemsorption, Activation method, Alumina powder, Electroless plating