化学工程
化學工程
화학공정
CHEMICAL ENGINEERING
2014年
12期
11-14,70
,共5页
陈小静%温惠云%黎琪%郝芳芳%焦萍%唐松青%薛伟明
陳小靜%溫惠雲%黎琪%郝芳芳%焦萍%唐鬆青%薛偉明
진소정%온혜운%려기%학방방%초평%당송청%설위명
氧化石墨烯%改进的Hummers法%聚乙二醇修饰%体外稳定性
氧化石墨烯%改進的Hummers法%聚乙二醇脩飾%體外穩定性
양화석묵희%개진적Hummers법%취을이순수식%체외은정성
graphene oxide%modified Hummers method%pegylation%in vitro stability
为使合成聚乙二醇化纳米氧化石墨烯( NGO )在生理条件下稳定保存,首先采用改进的Hummers 法合成NGO,再通过酰胺反应在NGO连接四臂聚乙二醇,通过测定FT-IR光谱、紫外分光光谱、粒度与粒度分布、SEM与TEM对产物进行表征。产物中含有羟基、羧基、羰基等含氧官能团,紫外最大吸收峰为225 nm,表明NGO与GO-PEG的成功合成。 NGO和GO-PEG的平均粒径分别为184.08 nm和96.72 nm,PDI分别为0.317和0.365。 SEM, TEM数据揭示了产物的片状形貌,GO-PEG在PBS和细胞培养基( DMEM)中静置60 d,未出现聚集和沉降现象,表明GO-PEG具有良好的体外稳定性。文中成功制备了NGO和聚乙二醇化的NGO,并且聚乙二醇化后的NGO在PBS和DMEM中具有良好的体外稳定性,为其在生物医药领域的应用奠定了基础。
為使閤成聚乙二醇化納米氧化石墨烯( NGO )在生理條件下穩定保存,首先採用改進的Hummers 法閤成NGO,再通過酰胺反應在NGO連接四臂聚乙二醇,通過測定FT-IR光譜、紫外分光光譜、粒度與粒度分佈、SEM與TEM對產物進行錶徵。產物中含有羥基、羧基、羰基等含氧官能糰,紫外最大吸收峰為225 nm,錶明NGO與GO-PEG的成功閤成。 NGO和GO-PEG的平均粒徑分彆為184.08 nm和96.72 nm,PDI分彆為0.317和0.365。 SEM, TEM數據揭示瞭產物的片狀形貌,GO-PEG在PBS和細胞培養基( DMEM)中靜置60 d,未齣現聚集和沉降現象,錶明GO-PEG具有良好的體外穩定性。文中成功製備瞭NGO和聚乙二醇化的NGO,併且聚乙二醇化後的NGO在PBS和DMEM中具有良好的體外穩定性,為其在生物醫藥領域的應用奠定瞭基礎。
위사합성취을이순화납미양화석묵희( NGO )재생리조건하은정보존,수선채용개진적Hummers 법합성NGO,재통과선알반응재NGO련접사비취을이순,통과측정FT-IR광보、자외분광광보、립도여립도분포、SEM여TEM대산물진행표정。산물중함유간기、최기、탄기등함양관능단,자외최대흡수봉위225 nm,표명NGO여GO-PEG적성공합성。 NGO화GO-PEG적평균립경분별위184.08 nm화96.72 nm,PDI분별위0.317화0.365。 SEM, TEM수거게시료산물적편상형모,GO-PEG재PBS화세포배양기( DMEM)중정치60 d,미출현취집화침강현상,표명GO-PEG구유량호적체외은정성。문중성공제비료NGO화취을이순화적NGO,병차취을이순화후적NGO재PBS화DMEM중구유량호적체외은정성,위기재생물의약영역적응용전정료기출。
The nanoscale graphene oxide ( NGO ) was synthesized and pegylated in order to impart stability in physiological environment . The graphene oxide was prepared by modified Hummers method , and then functionalized with 4-arm polyethylene glycol via amide reaction .The structure and morphology of NGO and NGO-PEG were characterized by FT-IR, UV-Vis, SEM and TEM, respectively.The result shows that the NGO prepared has a morphology of lamellar layer which contains the oxygen-based functional groups such as —OH,—COOH and C O.The maximum UV absorption wavelength of NGO and NGO-PEG is in 225 nm, which presents the successful synthesis of NGO and NGO-PEG.The average particle sizes of NGO and NGO-PEG are 184.08 nm and 96.72 nm, respectively, with PDI of 0.317 and 0.365, respectively.NGO-PEG exhibits good stability in PBS and DMEM solution without any agglomeration during 60 d.It concludes that the nanoscale graphene oxide and pegylated NGO are prepared successfully and NGO-PEG is stable in PBS and DMEM solution , which has widespread prospect for biomedical application .