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Relationship between the Conformation and Enzyme Activity of Commercial and Purified Glucose Oxidase

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Chinese Chemical Letters 1998年第11期9卷 0-0页

作者： Guo liang DAI jin Ru li Long jiang (institute of photographic chemistry, academia sinica, Being 100101) Acad sinica Inst Photog Chem Beijing 100101 Peoples R China

Relationship between the conformation and enzyme activity of the commercial and purified GOD have been studied. Both enzyme activity and value of (α/β of purified GOD in water solution and LB film were higher than t... 详细信息

关键词： GOD conformation enzyme activity

THE　EFFECT　OF　liPID　AND　INTERLAYER　HUMIDITY　ON　liGHT－INDUCED　CURRENT　FROM　MULTILAYER　BACTERIORHODOPSIN　LANGMUIT－BLODGETT　FILMS

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Chinese Chemical Letters 1995年第12期6卷 1061-1064页

作者： Tao LU Bao Fang li Long jiang (institute of photographic chemistry, academia sinica, beijing, China 100101) Acad sinica Inst Photog Chem Beijing 100101 Peoples R China

Multilayer L-B films of Bacteriorhodopsin(bR) in SoyaPC matrix with different weight ratios were prepared on ITO plates. The photocurrent was a function of layers, weight ratio. interlayer humidity and storage time. The corporation of soyaPC will largely affect the transmission of photocurrent by altering the membrane parameters, and the results of our experiment can be well explained by a multilayer equivalent electrical circuit model.

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Intramolecular energy transfer between chromophores separated by a rigid steroid bridge Ⅱ.Energy transfer as a probe to determine the ratio of two epimers

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Chinese Journal of chemistry 1990年第1期8卷 61-67页

作者： TONG Zhen-He YANG Guo-Qiang WU Shi-Kang institute of photographic chemistry,academia sinica,beijing 100012 institute of photographic chemistry Academia Sinica Beijing 100012

The singlet-singlet intramolecular energy transfer between naphthalene moiety and dansyl group held apart by a rigid steroid bridge was investigated for two molecules:3β-(1-naphthyl)acetoxy- 17α-dansyl-△~5androstene(3a)and 3β-(1-naphthyl)acetoxy-17β-dansyl-△~5androstene(3b).The rates of energy transfer for 3a and 3b in cyclohexane are 6.9×10~6 and 1.1×10~8s^(-1) *** difference in energy transfer rate between 3a and 3b is attributed to the different donor-acceptor separation and *** ratio of the two epimers in the synthesized product mixture was obtained from the fluorescence decay measurements.

关键词： Energy transfer as a probe to determine the ratio of two epimers

SYNTHESIS OF BENZOINS BY DYE PHOTOSENSITIZATION

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Chinese Chemical Letters 1990年第1期1卷 19-20页

作者： Zhan Gong zhao Tao SHEN institute of photographic chemistry,academia sinica,beijing 100012,China

Using heavy-atom-containing xanthene dyes,benzoins can be quanti- tatively prepared by photosensitized reduction from benzils with triethyla- *** is an important supplement to'benzoin condensation',*** those benzoins ... 详细信息

关键词： SYNTHESIS OF BENZOINS BY DYE PHOTOSENSITIZATION

Photoinduced　Intramolecular　Electron　Transfer　in　an　Oblique　Zinc　Phthalocyanine－Viologen　linked　System

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Chinese Chemical Letters 1996年第10期7卷 931-934页

作者： hong Jian TIAN Qing Fu ZHOU Hui Jun XU(institute of photographic chemistry. academia sinica. beijing 100101) ACAD sinica INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA

The spectroscopic properties and photoinduced electron transfer process have been studied in zinc phthalocyanine-viologen system with bisphenol A (ZnPcAV2+). It was found that the excited singlet state of zinc phthalocyanine moiety is quenched and the fluorescence lifetime is reduced by the linked viologen. Nanosecond laser photolysis studies showed that intramolecular quenching of the excited triplet state of zinc phthalocyanine moiety by the attached viologen occurred giving reduced viologen radical ion (V+) that survived over 50 μs.

关键词： Electron Intramolecular

PREPARATION AND PURIFICATION OF SCHIFF BASE AND PROTONATED SCHIFF BASE FROM 9-CIS-RETINAL

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Chinese Chemical Letters 1991年第12期2卷 921-924页

作者： Long jiang institute of photographic chemistry, academia sinica, beijing, 100101

A modified method for preparation and purification of Schiff base and protonated Schiff base from 9-cis-retinal has been suggested. Reaction took place in chloroform phase and purification was conducted by using water... 详细信息

关键词： HCI CIS PREPARATION AND PURIFICATION OF SCHIFF BASE AND PROTONATED SCHIFF BASE FROM 9-CIS-RETINAL

THE DISSOCIATION CONSTANT OF ARACHIDIC ACID BY IR AND LB TECHNIQUES

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Chinese Chemical Letters 1996年第1期7卷 51-54页

作者： Chang Yu FAN Tie Feng CHEN Long JUNG(institute of photographic chemistry, academia sinica beijing, 100101) ACAD sinica INST PHOTOG CHEMBEIJING 100101PEOPLES R CHINA

The dissociation constant of arachidic acid an a subphase containing Ag+ ion was measured by IR and LB techniques.

关键词： ACID LB THE DISSOCIATION CONSTANT OF ARACHIDIC ACID BY IR AND LB TECHNIQUES IR

The 15N NMR study of silatranes

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Chinese Journal of chemistry 1986年第2期4卷 140-143页

作者： ZHU jin-Chang* SUN Xian-Yu WU Hua-Ju jiang li-jin, institute of photographic chemistry, academia sinica, beijing CHEN Bang-Qin WU Guan-li, institute of chemistry, academia sinica, beijing institute of photographic chemistry Academia Sinica Beijing institute of chemistry Academia Sinica Beijing

Various silatrane compounds were studied by means of15N NMR spectroscopy. Thequantum chemical calculations of some of the compounds were carried out using CNDO/2 *** following correlations were obtained, i. e.,15N chemical shifts vary linearly with Taft's polar sub-stituent constants σ*（s） of the substituents R on the silicon atoms, and also with the net charge den-sities on the nitrogen atoms. From both experimental and theoretical aspects, it could be concluded thatthe Si←N dative bonds in a series of silatrane compounds actually exist.

关键词： N NMR study of silatranes The NMR

STUDIES ON MECHANIS OF PHOTOSENSITIZED ISOMERIZATION OF NORBORNADIENE DERIVATIVES

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Chinese Chemical Letters 1990年第2期1卷 161-164页

作者： Yang Fu MING Qian hong WU Yi CAO institute of photographic chemistry,academia sinica,beijing 100012

Using acridine dyes as sensitizers,the photoisomerization of three norbornadiene derivatives was *** valence isomerization of nor- bornadiene derivatives(Ⅰ_a,Ⅰ_b,Ⅰ_c)gave their corresponding isomers of quadri- cyclane(Ⅱ_a,Ⅱ_b,Ⅱ_c)operating with relatively high efficiency in an electron transfer *** quantum yields of isomerization were determined and the reaction mechanism was discussed.

关键词： STUDIES ON MECHANIS OF PHOTOSENSITIZED ISOMERIZATION OF NORBORNADIENE DERIVATIVES AO