經化學改質之石墨烯及其製法

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100143962

專利證號

I 496739

專利獲證名稱

經化學改質之石墨烯及其製法

專利所屬機關 (申請機關)

長庚大學

獲證日期

2015/08/21

技術說明

目前石墨烯氧化物製備方法主要是將石墨氧化後再以熱膨脹剝離法或化學剝離法將其剝離成石墨烯氧化物。而在石墨烯氧化物羧酸化改質中，除了本身的短鏈羧酸基團，有學者以多步驟的方式製備長鏈的羧酸基團。本發明是一經由化學法合成製備而得之"具長鏈段羧酸基之石墨烯氧化物"，其特徵為：在超音波震盪下將琥珀酸酐或馬林酸酐開環後接在石墨上，可獲得羧酸化石墨烯，此產物在水或有機溶劑中均有良好的分散性，且以一個步驟即完成羧酸化石墨烯之製備，可減少合成費用與時間，具產業競爭性。 Graphite and graphene are very difficult to be dissolved in common organic solvents owing to the π-π stacking. Graphene oxide (GO) can be prepared by the oxidation of graphite and then peel-off by thermal expansion or chemical separation. Carboxylic GO is a well-suspension material in water and organic solvents due to the contribution of carboxylic group. However, the preparation of GO from graphite oxide is time-consuming. A novel carboxylic GO has been synthesized through a simple and fast method. The 1-one-2-butyric acid-g-graphene (SAGO) and 1-one-2-vinyl-butyric- acid-g-graphene (MAGO) have been prepared by grafting GO with opened structures of succinic anhydride and maleic anhydride, respectively. These novel materials are well-suspension in water and organic solvents. The greatest advantage of the process is that it is inexpensive, is simple, and can be used for mass production.

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