XPS and NRA investigations during the fabrication of gold nanostructured functionalized screen-printed sensors for the detection of metallic pollutants

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• 作者：Jean-Philippe Jasmin^a ; Fré ; dé ; ric Miserque^b ; Eddy Dumas^c ; Ian Vickridge^d ; Jean-Jacques Ganem^d ; Caroline Cannizzo^a ; ^{caroline.cannizzo@univ-evry.fr} ; Annie Chaussé ; ^a
• 关键词：XPS ; NRA ; Gold nanoparticles ; Diazonium salts ; Carbon screen-printed electrodes
• 刊名：Applied Surface Science
• 出版年：2017
• 出版时间：1 March 2017
• 年：2017
• 卷：397
• 期：Complete
• 页码：159-166
• 全文大小：2037 K
• 卷排序：397

文摘

Functionalized nanostructured SPEs were made by multi-step diazonium salt chemistry. Investigation of SPEs surface by XPS and NRA shows monolayer coverage by aminobenzyl groups. Complete conversion of aminobenzyl groups into diazonium functions was also evidenced. Covalent grafting of AuNPs onto SPEs lead to an unusual modification of Au-4f core level spectrum. Ligand and lead signals showed the interest of nanostructurated SPEs for trace metals detection.