Preparation of a Responsive Carbohydrate-Coated Biointerface Based on Graphene/Azido-Terminated Tetrathiafulvalene Nanohybrid Material

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• 作者：Izabela Kaminska ; Alexandre Barras ; Yannick Coffinier ; Wojciech Lisowski ; Saumya Roy ; Joanna Niedziolka-Jonsson ; Patrice Woisel ; Joel Lyskawa ; Marcin Opallo ; Aloysius Siriwardena ; Rabah Boukherroub ; Sabine Szunerits
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2012
• 出版时间：October 24, 2012
• 年：2012
• 卷：4
• 期：10
• 页码：5386-5393
• 全文大小：419K
• 年卷期：v.4,no.10(October 24, 2012)
• ISSN：1944-8252

文摘

A one-step method for the reduction of graphene oxide (GO) to reduced graphene oxide (rGO) is reported taking advantage of the electron-donor properties of an azido-terminated tetrathiafulvalene (TTF-N₃). The resulting graphene/TTF-N₃ nanohybrid material is characterized by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FT-IR) spectroscopy, and by electrical and electrochemical means. The accessibility of the azide function to chemoselective modification by any alkyne-terminated partner molecule via Cu(I)-catalyzed 鈥渃lick鈥?chemistry is demonstrated. In a proof of principle and motivated by the importance of glycan-modified materials, many alkynyl-terminated mannose units were grated onto graphene/TTF-N₃. The TTF-mannose units could be released efficiently from the graphene matrix by chemical oxidation of TTF-mannose surface units to TTF²⁺-mannose, using Fe(ClO₄)₃ or the electron-deficient tetracationic cyclophane cyclobis(paraquat-p-phenylene) (CBPQT⁴⁺).

Keywords:

graphene oxide; reduction; tetrathiafulvalene; click chemistry; host鈭抔uest chemistry; glycan switch