Chemical Research in Chinese Universities Notice to Authors

ＣｈｅｍｉｃａｌＲｅｓｅａｒｃｈｉｎＣｈｉｎｅｓｅＵｎｉｖｅｒｓｉｔｉｅｓＮｏｔｉｃｅｔｏＡｕｔｈｏｒｓ＂ＣｈｅｍｉｃａｌＲｅｓｅａｒｃｈｉｎＣｈｉｎｅｓｅＵｎｉｖｅｒｓｉｔｉｅｓ＂，ｓｐｏｎｓｏｒｅｄｂｙｔｈｅＳｔａｔｅＥｄｕｃａｔｉｏｎａｌＣｏｍ...     

Selective Reduction of α,β-Unsaturated Amides with NaBH_4/BiCl_3 System

ＳｅｌｅｃｔｉｖｅＲｅｄｕｃｔｉｏｎｏｆα，β－ＵｎｓａｔｕｒａｔｅｄＡｍｉｄｅｓｗｉｔｈＮａＢＨ_４／ＢｉＣｌ_３ＳｙｓｔｅｍＳｅｌｅｃｔｉｖｅＲｅｄｕｃｔｉｏｎｏｆα，β－ＵｎｓａｔｕｒａｔｅｄＡｍｉｄｅｓｗｉｔｈＮａＢＨ_４／ＢｉＣｌ_３Ｓｙｓｔｅ...     

Crystal Structure and Spectrum Properties of a Manganese Complex with Schiff Base Ligand，Mn（bzacen）（pyrimidine）（NCS）

ＣｒｙｓｔａｌＳｔｒｕｃｔｕｒｅａｎｄＳｐｅｃｔｒｕｍＰｒｏｐｅｒｔｉｅｓｏｆａＭａｎｇａｎｅｓｅＣｏｍｐｌｅｘｗｉｔｈＳｃｈｉｆｆＢａｓｅＬｉｇａｎｄ，Ｍｎ（ｂｚａｃｅｎ）（ｐｙｒｉｍｉｄｉｎｅ）（ＮＣＳ）￥ＦｅｎｇＹｕｎ－Ｌｏｎｇ；ＬｉｕＳｈｉ－...     

An SCF－MS－Xα Study of the Electronic Structures of Binuclear and Trinuclear Gold（Ⅰ） Compounds

ＡｎＳＣＦ－ＭＳ－ＸαＳｔｕｄｙｏｆｔｈｅＥｌｅｃｔｒｏｎｉｃＳｔｒｕｃｔｕｒｅｓｏｆＢｉｎｕｃｌｅａｒａｎｄＴｒｉｎｕｃｌｅａｒＧｏｌｄ（Ⅰ）ＣｏｍｐｏｕｎｄｓＧＵＯＣｈｕｎ－ｘｉａｏ（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙ，ＪｉｌｉｎＵｎｉｖ...     

New Application of bond Function Basis Sets──ab initio Calculations of Nonlinear Optical Properties

ＮｅｗＡｐｐｌｉｃａｔｉｏｎｏｆｂｏｎｄＦｕｎｃｔｉｏｎＢａｓｉｓＳｅｔｓ──ａｂｉｎｉｔｉｏＣａｌｃｕｌａｔｉｏｎｓｏｆＮｏｎｌｉｎｅａｒＯｐｔｉｃａｌＰｒｏｐｅｒｔｉｅｓｏｆＣｈ_（４－ｎ）Ｆ_ｎ（ｎ＝１，２，３）ＬｉＺｈｉ－ｒｕ，ＴＡＯＦｕ－ｍｉ...     

TheoreticalStudiesontheStructuresandReactivityofStannylenoides（Ⅱ）

ＴｈｅｏｒｅｔｉｃａｌＳｔｕｄｉｅｓｏｎｔｈｅＳｔｒｕｃｔｕｒｅｓａｎｄＲｅａｃｔｉｖｉｔｙｏｆＳｔａｎｎｙｌｅｎｏｉｄｅｓ（Ⅱ）ＱｉｕＨｕａ－ｙｕ＊，ＤｅｎｇＣｏｎｇ－ｈａｏ（ＴｈｅｏｒｅｔｉｃａｌＣｈｅｍｉｓｔｒｙＧｒｏｕｐ，ＳｈａｎｄｏｎｇＵｎ...     

Study of Catalysts Based on High Surface Area MnO_2 for Catalytic Combustion of CH_4

ＳｔｕｄｙｏｆＣａｔａｌｙｓｔｓＢａｓｅｄｏｎＨｉｇｈＳｕｒｆａｃｅＡｒｅａＭｎＯ２ｆｏｒＣａｔａｌｙｔｉｃＣｏｍｂｕｓｔｉｏｎｏｆＣＨ４ＷＡＮＧＸｉａｎｇＸＩＥＹｏｕｃｈａｎｇ１）（ＤｅｐａｒｔｍｅｎｔｏｆＣｈｅｍｉｓｔｒｙＰｅｋｉｎｇＵｎｉｖｅｒ...     

Thermokinetic Oscillation of a Two-step Reacting System Coupled with Thermal Conduction and Apparent

ＴｈｅｒｍｏｋｉｎｅｔｉｃＯｓｃｉｌｌａｔｉｏｎｏｆａＴｗｏ－ｓｔｅｐＲｅａｃｔｉｎｇＳｙｓｔｅｍＣｏｕｐｌｅｄｗｉｔｈＴｈｅｒｍａｌＣｏｎｄｕｃｔｉｏｎａｎｄＡｐｐａｒｅｎｔＵｎｃｅｒｔａｉｎｔｙｉｎｔｈｅＰｈｅｎｏｍｅｎｏｌｏｇｉｃａｌＫｉｎｅｔ...     

CMC d－p π Bond in Solid State（Ⅱ） Band Structure and Metallic Properties in Incommensurate Misfit Layer Compounds（MS）_xTS_2（M＝Sn，Pb and La；T＝V，Nb，Ta and Cr）

ＣＭＣｄ－ｐπＢｏｎｄｉｎＳｏｌｉｄＳｔａｔｅ（Ⅱ）ＢａｎｄＳｔｒｕｃｔｕｒｅａｎｄＭｅｔａｌｌｉｃＰｒｏｐｅｒｔｉｅｓｉｎＩｎｃｏｍｍｅｎｓｕｒａｔｅＭｉｓｆｉｔＬａｙｅｒＣｏｍｐｏｕｎｄｓ（ＭＳ）_ｘＴＳ_２（Ｍ＝Ｓｎ，ＰｂａｎｄＬａ；Ｔ＝Ｖ，Ｎｂ...     

Syntheses and Anti-inflammatory Action of (η-C_5H_5)_2Ti(Cin)_2 and (η-C_5H_5)_2Ti(Tzea)_2

ＩｎｔｒｏｄｕｃｔｉｏｎＳｉｎｃｅＫ ｐｆｄｉｓｃｏｖｅｒｅｄｔｈａｔｄｉｃｙｃｌｏｐｅｎｔａｄｉ ｅｎｙｌｔｉｔａｎｉｕｍｄｉｃｈｌｏｒｉｄｅｅｘｈｉｂｉｔｅｄａｎｔｉｔｕｍｏｕｒａｃｔｉｏｎｉｎ1979,1ａｌａｒｇｅｎｕｍｂｅｒｏｆｃｙｃｌｏｐｅｎｔａｄｉｅｎｙｌｔｉｔａｎｉｕｍｃｏｍ ｐｌｅｘｅｓｂｅａｒｉｎｇｄｉｆｆｅｒｅｎｔｓｕｂｓｔｉｔｕｅｎｔｓｈａｖｅｂｅｅｎｓｙｎｔｈｅ ｓｉｚｅｄ .2 ,3Ｔｈｅｅｘｐｅｒｉｍｅｎｔａｌｄａｔａｒｅｖｅａｌｅｄｔｈａｔ (Ｃｐ) 2 ＴｉＸ2(Ｘ =ｈａｌｏｇｅｎ ,ｐ…     

Interaction of Sulfonated Calix [n] arenes with Rhodamine B and Its Application to Determine Acetylcholine in a Real Neutral Aqueous Medium

Complexation between Rhodamine B (RB) and sulfonated calix [n] arenes (SCnA) were studied by means of UV‐vis spectroscopy and fluorescence spectroscopy. In the presence of sulfonated calix[n] arenes, the absorption band of Rhodamine B shifts to longer wavelength and its intensity decreases. The formation of a host‐guest type complex also results in the fluorescence quenching of Rhodamine B. The association constants for the RB/SCnA complexes increase in the order of SC4A < SC6A < SC8A and show dependence on the size of the cavities of the calixarenes. The fluorescence is selectively regenerated by adding acetylcholine. Based on this observation, a method to determine acetylcholine in a real neutral aqueous medium was developed.     

Synthesis and characterization of a sensitive and selective Fe3+ fluorescent sensor based on novel sulfonated calix[4]arene‐based host‐guest complex

A novel fluorescent sensor was prepared from sulfonated calix[4]arene (SC4A) by the host-guest complexation method using the fluorescent dye rhodamine B (RB) as a structure-directing agent. The crystal structure of the host-guest complex (RB@(SC4A)₃) was confirmed by X-ray diffraction studies while its performance and sensing mechanism for metal ion pollutants were characterized using fluorescence and nuclear magnetic resonance spectroscopies. The results showed that RB@(SC4A)₃ had a triangular branch structure resulting from host-guest mediation of the interactions between the three SC4A host molecules and the three terminal groups of the guest molecule RB. The host-guest complex exhibited sensitive and selective sensing towards Fe³⁺ ions via a fluorescence quenching mechanism. The results indicated that RB@(SC4A)₃ could be a promising sensitive and selective fluorescent sensor for metal ion pollutants monitoring. It also provided new insights into the synthesis of calixarene-based host-guest complex.     

Study on the inclusion interaction of p-sulfonated calix[n]arenes with Vitamin K3 using methylene blue as a spectral probe

The characteristics of host-guest complexation between p-sulfonated calix[n]arene (SCnA, n = 4, 6) and Vitamin K(3) (VK(3)) were investigated by fluorescence spectrometry and absorption spectrometry using methylene blue (MB) as a probe. Interaction with MB and SCnA led to an obvious decrease in fluorescence intensity of MB, accompanying with shifts of emission peaks. Absorption peaks also showed interesting changes; however, when VK(3) was added, fluorescence intensity and absorbance recovered and a slight and slow red shift was observed. The obtained results showed that the inclusion ability of p-sulphonated calix[n]arenes towards VK(3) was the order: p-sulphonated calix[6]arene (SC6A) >p-sulphonated calix[4]arene (SC4A). Relative mechanism was proposed to explain the inclusion process.     

Rhodamine B aggregation in self-assembled multilayers induced by polyelectrolyte and interfacial fluorescence recognition for DNA

Photophysical properties of Rhodamine B bound to water-soluble polyanion sodium poly(4-styrenesulfonate) (PSS) in solution and Quartz/APES/PSS/RB SAMs were investigated. Experiments showed that Rhodamine B aggregated in Quartz/APES/PSS/RB SAMs and its fluorescence behavior was different from that in Quartz/APES/RB SAMs without PSS. The constructed Quartz/APES/PSS/RB SAMs were applied for label-free interfacial fluorescence sensing of DNA with extremely high sensitivity.     

光谱法与共焦荧光成像法研究罗丹明B与ct-DNA的相互作用

采用吸收光谱、荧光光谱以及共焦荧光成像技术研究生理条件下罗丹明B(Rhodamine B,RB)与小牛胸腺DNA(ct-DNA)的相互作用以及相互作用模式。光谱研究结果显示,在450~650 nm的吸收光谱范围内,ct-DNA溶液对罗丹明B有减色作用;在560~660 nm荧光发射光谱范围内,ct-DNA对罗丹明B有荧光猝灭作用。同时,随着ct-DNA的加入,罗丹明B溶液的荧光偏振值发生变化,说明罗丹明B与ct-DNA能发生相互作用。在竞争性实验中,罗丹明B未能将亚甲基蓝(MB)从MB-ct-DNA复合体系中置换出来,说明罗丹明B与ct-DNA通过沟槽结合方式发生相互作用。共焦荧光成像结果显示,ct-DNA加入后,罗丹明B的荧光猝灭十分明显。利用罗丹明B和4',6-二脒基-2-苯基吲哚(DAPI)对He La细胞染色后进行共焦荧光成像,结果进一步证实罗丹明B与ct-DNA是通过沟槽结合作用将细胞核染成红色。     

荧光共振能量转移猝灭法测定加替沙星

在pH=7.00的Britton-Robinson (B-R)缓冲溶液,及十二烷基硫酸钠(SDS)介质中,吖啶橙(AO)-罗丹明 (RB)能够发生有效的能量转移,使RB荧光增强.加替沙星(Gatifloxacin, GTFX)的加入又使得RB的荧光猝灭,据此建立了测定加替沙星的新方法.将此方法用于加替沙星片剂和粉针剂的测定,结果满意.实验表明,该方法简单、快速、灵敏、准确.     

Highly fluorescent rhodamine B nanoparticles entrapped in hybrid glasses

Rhodamine B (RB) nanoparticles entrapped in hybrid glasses show enhanced fluorescent emission (approximately 220-fold larger than that of single RB molecules) thanks to the configuration control of the self-assembled aggregates that form the supramolecular architecture of the nanoparticles. The fluorescence performance reported in this work is around 1 order of magnitude larger than that recently reported for fluorescent Nile Red nanoparticles. The fluorescence enhancement results from the use of a highly efficient fluorescent dye such RB and the formation of larger nanoparticles. Note that the later implies the presence of a large number of emitting centers involved in the fluorescence emission.     

Label free DNA detection based on gold nanoparticles quenching fluorescence of Rhodamine B

A novel and sensitive label free DNA detection method using gold nanoparticles (GNPs) and Rhodamine B (RB) has been developed. The assay is based on the following two properties. One is the different adsorption properties of single-stranded and double-stranded DNA on GNPs in colloidal solution. The other is the different quenching ability of aggregated GNPs and dispersed GNPs on RB. Un-aggregated GNPs could effectively quench the fluorescence of RB. However, the quenching ability greatly decreases after GNPs aggregated. The hybridization of probe DNA and target DNA is monitored by the fluorescence detection after the RB is added to the solution. Under the optimal experimental conditions, the detection limit of this assay is 2.9×10(-13) mol L(-1).     

吖啶橙-罗丹明B能量转移荧光猝灭法测定叶酸

研究了吖啶橙(AO)与罗丹明B(RB)间发生能量转移的最佳条件,在pH=6.80的Britton-Robinson(B-R)缓冲溶液,十二烷基苯磺酸钠的介质中,AO-RB间发生有效能量转移,使RB荧光大大增强,叶酸(FA)的加入使能量转移体系的RB的荧光强度降低,即发生猝灭.以此建立了利用AO-RB能量转移荧光猝灭法测...     

Study on the fluorescence behavior of p-sulfonated calix[4,6]arene in cationic surfactant cetyltrimethylammonium bromide solution and its analytical application

The fluorescence properties of p-sulfonated calix[4,6]arene (SCnA, n=4, 6) in cationic surfactant cetyltrimethylammonium bromide (CTAB) solution were investigated. It was found that the fluorescence intensity of SCnA could be enhanced markedly by an appropriate amount of CTAB. The results indicate the formation of complex between CTAB and SCnA at a 1:1 complex stoichiometry and their association constants were calculated by applying a deduced equation. Based on the obtained results, a new fluorimetric method has been developed for rapid determination of SCnA with a good linearity in the concentration range of 2x10(-7) to 7x10(-6)mol L-1.