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Novel Zwitterionic Surfactants: Synthesis and Surface Active Properties of N-(3-Alkoxy-2-Hydroxypropyl)-N, N-Dimethyl glycine Betaines 被引量:1
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作者 Jing Qu GUAN xi you li Chen Ho TUNG (Institute of Photographic Chemistry. Chinese Academy of Sciences. Beijing 100101) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第6期499-502,共4页
Five new zwitterionic surfactants with long chain alkyl betaine structure incorporated with hydroxylpropyl group have been synthesized. Their structures were identified by elemental analysis, IR (HNMR)-H-1, and (CNMR)... Five new zwitterionic surfactants with long chain alkyl betaine structure incorporated with hydroxylpropyl group have been synthesized. Their structures were identified by elemental analysis, IR (HNMR)-H-1, and (CNMR)-C-13. Surface tension experiments showed that these surfactants have higher surface activity than those without hydroxypropyl group. The values of CMC and gamma(CMC) of these surfactants have been determined. 展开更多
关键词 ppm Synthesis and Surface Active Properties of N Novel Zwitterionic Surfactants OH OCH N-Dimethyl glycine Betaines Alkoxy-2-Hydroxypropyl
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The Synthesis and Film Forming Properties of Unsymmetrical Phthalocyanine Bearing One Crown Ether Void
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作者 xi you li Guo xiang xiONG Hui Jun XU(The Institute of Photographic Chemistry, Chinese Academy of Sciences. Beijing 100101) 《Chinese Chemical Letters》 SCIE CAS CSCD 1997年第9期815-818,共4页
The synthesis of phthalocyanines bearing one crown ether macrocycle and three alkoxyl chains is described. They form stable monolayers and can be employed for the preparation of multilayer films by the Langmuir-Bloget... The synthesis of phthalocyanines bearing one crown ether macrocycle and three alkoxyl chains is described. They form stable monolayers and can be employed for the preparation of multilayer films by the Langmuir-Blogett technique. The orientations of the molecules in the film were affected by alkali metal ions in the subphase. lt is suggested that a kind of 'sandwich' dimer was formed in the film induced by potassium ions 展开更多
关键词 HNMR MS Figure The Synthesis and Film Forming Properties of Unsymmetrical Phthalocyanine Bearing One Crown Ether Void
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Novel Mixed LB Films of Porphyrin and Phthalocyanine Based on Molecular Recognition
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作者 xi you li Yan li CHEN Hui Jun XU(Chemistry Department, Shandong Teacher’s University, Ji’nan 250014)(Chemistry Department, Ji’nan United University, Ji’nan 250002)(Institute of Photographic Chemistry, Chinese Academy of Sciences. Beijing 100101) 《Chinese Chemical Letters》 SCIE CAS CSCD 1999年第2期167-170,共4页
The potassium salt of monocarboxylic substituted porphyrin acid mono crown ether substituted phthalocyanine can form heterodimer in solution and this kind of heterodimer can be fabricated into highly ordered LB films.... The potassium salt of monocarboxylic substituted porphyrin acid mono crown ether substituted phthalocyanine can form heterodimer in solution and this kind of heterodimer can be fabricated into highly ordered LB films. The structures of the film were identified by absorption spectra polarized absorption spectra and low angle X-ray diffraction methods. 展开更多
关键词 PHTHALOCYANINE PORPHYRIN LB film
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The Mixed LB film of Crowned Phthalocyanine and Picrate
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作者 xi you li Hui Jun XU(Institute of Photographic Chendstry, Chinese Academy of Sciences, Beijing 100101) 《Chinese Chemical Letters》 SCIE CAS CSCD 1998年第6期573-575,共3页
The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The pi-A isotherms show that the addition of PiK in subphase in... The mixed LB film of mono crown ether substituted phthalocyanine (CPc) and potassium picrate (PiK) were prepared by adding potassium picrate in subphase. The pi-A isotherms show that the addition of PiK in subphase increases the orientation angles of phthalocyanine in monolayers. The absorption spectra revealed that the monolayer can be transferred to substrates easily. X-ray diffraction results show that the mixed film possesses the same thickness as that of pure phthalocyanine film. 展开更多
关键词 mono crown ether phthalocyanine LB film PICRATE
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