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ÎÄÕÂÃû³Æ£ºPrussian blue modified metal¨Corganic framework MIL-101(Fe) with intrinsic peroxidase-like catalytic activity as a colorimetric biosensing platform ×÷ÕߣºFengjuan Cui,* Qingfang Deng and Li Sun |
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Prussian blue modified metal-organic framework MIL-101(Fe) with intrinsic peroxidase-like catalytic activity as a colorimetric biosensing platform ×÷Õß:Cui, FJ (Cui, Fengjuan)[ 1 ] ; Deng, QF (Deng, Qingfang)[ 1 ] ; Sun, L (Sun, Li)[ 1 ] RSC ADVANCES ¾í: 5 ÆÚ: 119 Ò³: 98215-98221 DOI: 10.1039/c5ra18589k ³ö°æÄê: 2015 ²é¿´ÆÚ¿¯ÐÅÏ¢ ÕªÒª In this paper, a nanosized porous PB/MIL-101(Fe), was facilely prepared with a uniform octahedral structure by growing Prussian blue (PB) on the microporous metal-organic framework MIL-101(Fe), and confirmed by cyclic voltammogram (CV), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy. It was demonstrated to possess intrinsic peroxidase-like activity and could catalytically oxidize 3,3',5,5'-tetramethylbenzidine (TMB), o-phenylenediamine (OPD), and 2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate) (AzBTS) by H2O2 in solution to produce a typical colour change. As a novel peroxidase mimic material, PB/MIL-101(Fe) shows high catalytic efficiency. Kinetic analysis of as the as-prepared PB/MIL-101(Fe) was studied, and it gave a linear absorbance response from 2.40 mu M to 100 mu M with a limit of detection (LOD) of 0.15 mu M. It indicated that the catalytic behavior was consistent with typical Michaelis-Menten kinetics and follows a ping-pong mechanism. Interestingly, the K-m values for PB/MIL-101( Fe) with respect to TMB and H2O2 is 0.127 and 0.0580 mM were lower than those of MIL-101(Fe) (0.490 and 0.620 mM for TMB and H2O2), respectively. This is probably attributed to more active sites and the pores of the PB/MIL-101(Fe) for peroxidase substrates. More importantly, it can be easily functionalized with different compounds including silica coating (TEOS), 3-aminopropyltriethoxysilane (APTES), polyethylene glycol (PEG) or folic acid (FA) to make it biocompatible. The results reveal that the stability, ease of production and versatility of PB/MIL-101(Fe) nanoparticles could result in them being used as a promising tool for cancer cell detection. With these findings, a simple and sensitive colorimetric biosensing platform has been established. ¹Ø¼ü´Ê KeyWords Plus:HORSERADISH-PEROXIDASE; CARBON NANOTUBES; NANOPARTICLES; GLUCOSE; ENZYME; FUNCTIONALIZATION; LUMINESCENCE; PERFORMANCE; MIL-53(FE); CHEMISTRY ×÷ÕßÐÅÏ¢ ͨѶ×÷ÕßµØÖ·: Cui, FJ (ͨѶ×÷Õß) [ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ] Qiqihar Univ, Coll Chem & Chem Engn, Qiqihar 161006, Peoples R China. µØÖ·: [ÏÔʾÔöÇ¿×éÖ¯ÐÅÏ¢µÄÃû³Æ] [ 1 ] Qiqihar Univ, Coll Chem & Chem Engn, Qiqihar 161006, Peoples R China µç×ÓÓʼþµØÖ·:cxf234@126.com »ù½ð×ÊÖúÖÂл »ù½ð×ÊÖú»ú¹¹ ÊÚȨºÅ National Basic Research Program of China 2011CB935700 Postdoctoral Scientific Research Developmental Fund LBH-Q14158 Program for Yong Teachers Scientific Research in Qiqihar University 2014k-Z07 ²é¿´»ù½ð×ÊÖúÐÅÏ¢ ³ö°æÉÌ ROYAL SOC CHEMISTRY, THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND Àà±ð / ·ÖÀà Ñо¿·½Ïò:Chemistry Web of Science Àà±ð:Chemistry, Multidisciplinary ÎÄÏ×ÐÅÏ¢ ÎÄÏ×ÀàÐÍ:Article ÓïÖÖ:English Èë²ØºÅ: WOS:000365403000040 ISSN: 2046-2069 ÆÚ¿¯ÐÅÏ¢ Ŀ¼£º Current Contents Connect® Impact Factor (Ó°ÏìÒò×Ó): Journal Citation Reports® ÆäËûÐÅÏ¢ IDS ºÅ: CX0QZ Web of Science ºËÐĺϼ¯ÖÐµÄ "ÒýÓõIJο¼ÎÄÏ×": 51 Web of Science ºËÐĺϼ¯ÖÐµÄ "±»ÒýƵ´Î": 0 |
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