《综合分析举例》PPT课件.ppt

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1、,材料研究方法研究生课程,浙江工业大学 化工与材料学院 材料系,第10章 综合分析举例,Li-Ping Yang,Cai-Yuan Pan,Macromol.Chem.Phys.2008,209,783-793,1,Six-armed star Poly(L-lactic acid),MWNT,PLLA-MWNT,Figure 1 Typical 1H NMR spectra of A)PLLA2 and B)MWCNT-PLLA2 composites,Figure 2.FT-IR spectra of A)pristine MWCNTs,B)PLLA2,and C)MWCNT-PLLA2

2、composites.,Figure 3.Typical UV-vis absorption spectra of A)PLLA2 and B)MWCNT-PLLA2 composites.The inset figure shows the variation of absorption intensity of the MWCNT-PLLA2 suspension at300800 nm with time.,Figure 4.Fluorescence spectra of A)PLLA2 and B)MWCNT-PLLA2 composites.,Figure 5.Raman spect

3、ra of A)the MWCNT-PLLA2,B)the pristine MWCNTs,C)the MWCNTs obtained after alkaline hydrolysis of the MWCNT-PLLA composites and following heat treatment at 550 oC under N2 atmosphere,and D)the MWCNTs obtained byalkaline hydrolysis of the MWCNT-PLLA composites.,2,Solid-phase photocatalytic degradation

4、 of polystyrene with modified nano-TiO2 catalyst,Ling Zan,Songlin Wang,Wenjun Fa,Yanhe Hu,Lihong Tian and Kejian Deng,Polymer 47(2006)8155-8162,Fig.1.The photographs amplified 100 times.(a)PS-untreated TiO2 film,(b)PS-g-TiO2 film(TiO2:1%).,Fig.2.(a)The UV-vis spectra of PS-g-TiO2(2%)films under UV-i

5、rradiation for 0 h,15 h,30 h,and 45 h.(b)The UV-vis spectra of pure PS films under UV-irradiation for 0 h,15 h,30 h,and 45 h.,Fig.3.FT-IR spectra of(a)original PS-g-TiO2(1%),(b)pure PS irradiated for 45 h,(c)PS-g-TiO2(1%)irradiated for 45 h.,Fig.4.XPS spectra of C1s.(a)Pure PS film(0 h),(b)pure PS f

6、ilm(50 h),(c)PS-g-TiO2(TiO2:1%)film 50 h.,Fig.4.XPS spectra of C1s.(a)Pure PS film(0 h),(b)pure PS film(50 h),(c)PS-g-TiO2(TiO2:1%)film 50 h.,Fig.4.XPS spectra of C1s.(a)Pure PS film(0 h),(b)pure PS film(50 h),(c)PS-g-TiO2(TiO2:1%)film 50 h.,Fig.5.XPS spectra of O1s.(a)Pure PS film 0 h,(b)pure PS fi

7、lm 50 h,(c)PSg-TiO2(TiO2:1%,50 h)film.,Fig.5.XPS spectra of O1s.(a)Pure PS film 0 h,(b)pure PS film 50 h,(c)PSg-TiO2(TiO2:1%,50 h)film.,Fig.5.XPS spectra of O1s.(a)Pure PS film 0 h,(b)pure PS film 50 h,(c)PSg-TiO2(TiO2:1%,50 h)film.,Fig.6.Weight loss of pure PS and PS-g-TiO2 films under UV-light irr

8、adiation(2.5 mW/cm2,254 nm).,Fig.7.Weight loss of pure PS and PS-g-TiO2(TiO2:1%)films under sunlight irradiation.,Fig.9.SEM images of:(a)pure film(0 h),(b)composite film(TiO2:1%,0 h),(c)pure film(200 h),(d)composite film(TiO2:1%,200 h).,Fig.10.Probable processes of the benzene ring cleavage.,3,Nonco

9、valent Functionalization of Carbon Nanotubes by FluoresceinPolyethylene Glycol:Supramolecular Conjugates with pH-Dependent Absorbance and Fluorescence,Nozomi Nakayama-Ratchford,Sarunya Bangsaruntip,Xiaoming Sun,Kevin Welsher,and Hongjie Dai etc J.AM.CHEM.SOC.2007,129,2448-2449,Figure 1.(a)Schematic

10、showing SWNT and Fluor-PEG(1).,Figure 1.(b)Atomic force microscopy image of Fluor-PEG/SWNTs deposited on substrate.,Figure 1.(c)Photo of Fluor-PEG/SWNT in water(left,yellow-green color due to SWNT-bound Fluor),after heating at 70 C for 2 days(center),and in cell culture medium supplemented with10%se

11、rum(right,red color due to cell medium).Unbound Fluor-PEG was dialyzed in the starting solution.,Figure 2.Optical properties of SWNT-bound Fluor-PEG.(a)Absorbanceof Fluor-PEG/SWNT and free Fluor-PEG.,Fig 2.(b)Corresponding fluorescence emission spectra.,Fig 2.(c)Emission peak intensity of SWNT bound

12、 Fluor-PEGand free Fluor-PEG in a fluorescein concentration range of 200-900 nM.,Figure 3.pH-dependent fluorescence and absorbance of Fluor-PEG/SWNT.Absorption curves of Fluor-PEG/SWNT at various pHs in the(a)fluoresceinregion(dashed line marks the peak at pH 12).,Figure 3.(b)SWNT region(curves are

13、displaced for clarity).,Figure 3.(c)Corresponding fluorescence emission spectra(excitation)495 nm).,Figure 3.(d)Comparison of emission peak intensitydependence on pH of free Fluor-PEG and Fluor-PEG/SWNT with the same Fluor-PEG concentration.,Figure 4.Cellular uptake of Fluor-PEG/SWNT.(a)Confocal flu

14、orescenceimage of BT474 cells incubated with Fluor-PEG/SWNT.,Figure 4.(b)Fluorescence intensities of large population of cells treatedwith Fluor-PEG/SWNT vs untreated control cells by flow cytometry.,Figure 4.(c)Micro-Raman image of the cells incubated with Fluor-PEG/SWNT.,Figure 4.(d)Representative

15、 Raman spectra showing the presence and absence of the SWNT G-band from Fluor-PEG/SWNT-incubated cells and untreated control cells,respectively.,Preparation of polymer-coated mesoporous silica nanoparticles used for cellularimaging by a graft-from method,4,Yang Yang,Xuehai Yan,Yue Cui,Qiang He,Dongx

16、iang Li,ac Anhe Wang,Jinbo Fei and Junbai Li etcJ.Mater.Chem.,2008,18,57315737|5731,Fig.1 SEM(A)and TEM(B,C)of MSN-NH2;TEM(D)of MSNinitiator.,Fig.2 XPS of MSN(a);MSN-NH2(b);MSNinitiator(c)andMSNpolymer(M1)(d).,Fig.3 FTIR spectra of M1(a);M2(b);M3(c)and MSNinitiator(d).,Scheme 1 A schematic illustrat

17、ion of the surface functionalization forMSN and the fabrication of MSNpolymer.,Fig.4 SEM(A)and TEM(B)of M1;SEM(C)and TEM(D)of M2;SEM(E)and TEM(F)of M3.The sample of the inset of image F was negative stained with 1%phosphotungstic acid.,Fig.5 1H NMR spectra of PNIPAM(A),M3(B)and M1(C)in D2O atdiffere

18、nt temperatures.,Fig.6 Optical transmittance(-)and average hydrodynamic diameters(:)of M3 in the temperature range 2045 C.,Fig.7 FITC release from M3 at different cycle times.After UVmeasurement,the fresh water was replaced and FITC-M3 particles wereredispersed at 20 C(:)or 40 C(-)for 15 minutes.The

19、 inset imageillustrates the whole process.,Fig.9 CLSM of MCF-7 cells stained with FM 4-64 and FITC-M3suspensions after 12 h of co-culturing.The corresponding images of the FITC-M3(green)(A);FM 4-64-labeled endosomes(B);the overlappedimage(C)and the pseudo-bright field image(D).,Scheme 2 The controlled release mechanism of FITC-M3 and cell uptake process.,