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Spectroscopy Study Of Microemulsion And Phthalocyaninato Rare Earth Complexes

Posted on:2004-03-02Degree:MasterType:Thesis
Country:ChinaCandidate:J G LiFull Text:PDF
GTID:2121360125964617Subject:Applied Chemistry
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1.The definition, microstructure, preparation and properties of microemulsio n had been reported in detail, as well as its application Microstructures of Wa ter/Toluene/Pentanol/SDS and Water/CTAB/Butanol/Heptane had been investigate d using phase behavior and conductivity. Microstructure of water has been stud ied using FT-IR. Intensity and peak position of O-H stretching band of water i n the system were found to change with the percentage of water.In Water/Tolu ene/Pentanol/SDS the O-H stretching vibration in water decreased from 3437cm -1to 3414cm-1 with the increase of water/oil from 0.231 to 0.865.And in Water/C TAB/Butanol/Heptane the O-H stretching vibration in water decreased from 341 4cm-1to 3387cm-1with the increase of water/oil from 0.244 to 0.4392.In the paper we had studied the absorption spectrum of sandwich-typephthalocyaninato lanthanide metals compounds which was made of lanthanide metals and two phthalocyanines(Pcs) with different substituent. We found that there were soret band and Q-band in phthalocyanine compounds with different substituent. As the radio of lanthanide metals were decreased. The soret bend and Q-band's wavelength of the compound, which had the some PCS and the different lanthanide were moving to ultraviolet region in the same solution. With the polarity of the solvent increasing, the wavelength of soret band and Q-band in the same phthalocyanine compound was moving to red region; The ability to giving electron of the phthalocyanine's subsitituent was stronger, and the absorption wavelength camesto be long. Because of the different subsitituent, polarity and radius, the relativeintensity of S-band and Q-band have some regulation with satisfactory result.3. The infra-red(IR) spectroscopic data for a series of heteroleptiq tris(phtha locyaninato)rare earth complexes (Pc)M(OOPc)M(OOPc) (M=Eu,Gd,Tb,Er,Dy,Ho, Yb,Lu,Y) and (Pc)Tm(OOPc)Tm(Pc) [Pc=dianion of unsubstitutedphthalocyanine, OOPc=dianion of 3,4,12,13,21,22,30,3l-octa(octyloxy)-phthalocyanine] had been collected with resolution of 2cm-1.The IR spectra for (Pc)M(OOPc)M(OOPc) an d (Pc)Tm(OOPc)Tm(Pc) are more complicated than those of bis(phthalocyanin ato)rare earth analogues,revealing the relatively lower symmetry of the former t wo compounds. For both series of heteroleptic tris (phthalocyaninato) rare earth compounds, the characteristic phthalocyanine dianion IR bands for Pc2- and O OPc2- at ca. 1329 and 1380 cm-1 attributed to the pyrrole stretching and the symmetric C-H bending of -CH3 groups in octyloxy side chains of OOPc rings together with some small contribution from the isoindole stretching vibrations,re specteively,are simultaneously found in their IR spectra.The frequency of the lat er one was dependent on the central rare earth size,shifting slinghtly to the hig her energy along with the decrease of rare earth radius.The frequency of the vi bration at 876-887 cm-1 is also dependent on the rare earth ionic size.The metalsize-sensitivity of this band and theoretical studies render it possible to re-assi gn it to the coupling of isoindole deformation and aza vibration.The nature of another metal-sensitive vibration mode at 1110-1116 cm-1, which was previouslyassigned to the C-H bending,is now re-assigned as an isoindole breathing mod e with some small contribution also from C-H in-plane bending. All the metalsize-dependent IR absorptions are composed primarily of the vibrations of pyr role or isoiondole stretching, breathing or deformation or aza stretching of the PC rings.
Keywords/Search Tags:microemulsion, Infra-red, phthalocyanine, absorption spectrum, Heteroleptic rare earth
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