Dear all, I need a protocol to prepare thiol functionalized graphene sheets especially by means of Mercaptopropionic acid?
Thanks one million.
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I'd offer a method that could be performed with little change:
100 mg GO was dispersed in 100 ml DMF and sonicated for 1 h. After removing undispersed GO by centrifugation at 1000 rpm for 10 min, a homogeneous solution of GO in DMF was obtained. Then, 300 mg P4S10 was added to the solution and the reaction flask was evacuated to 5.10-3 mbar at 100°C for 2 min to remove traces of water in the flask. The thionation was performed for 12 h under vacuum and continuous stirring at 120°C. Finally, the reaction product was collected by filtering the solution through a 0.45 μm polyamide membrane filter and was extensively washed firstwith 100 ml of water, followed by 100ml ethanol and acetone,respectively. If the reaction was performed at the boiling point of DMF (152-154°C) under reflux for 36 h, TrGO was obtained with a higher degree of reduction, but less thiol groups. The reduction degree of TrGO can be determined by measuring the UV-Vis absorption as well as the sheet resistance.For more info. please attached file,good luck
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