Interaction between Metalloporphyrins and Diazine Tautomers

Xu, Huiying,Wang, Wei,Zhu, Jianqing,Xu, Xiaolu,Zhang, Deyong Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.12

The interaction between metalloporphyrins and diazine tautomers was investigated using quantum chemistry method. The results showed that the metal atom in the metalloporphyrin was not coplanar with porphin ring, and zinc porphyrin has the most extent of its non-coplanar nature. The most stable complex in nine complexes was iron porphyrin. NBO analysis indicated that the interaction between the lone pair of electrons on the nitrogen atom and the unoccupied lone pair orbital of metal contributes significantly to the stability of the complexes. Through the conceptual DFT parameter and Fukui dual descriptor, the thermodynamic stability and reactivity of complexes were analyzed. The density difference function (DDF) analyzes were performed to explore the rearrangement of electronic density after the coordination interaction. NICS calculation indicated that metalloporphyrin aromaticity was reduced after the coordination interaction, and aromaticity of diazine tautomer was increased along direction vector of the coordination interaction force.

Interaction between Metalloporphyrins and Diazine Tautomers

Huiying Xu,Wei Wang,Jianqing Zhu,Xiaolu Xu,Deyong Zhang 대한화학회 2013 Bulletin of the Korean Chemical Society Vol.34 No.12

The interaction between metalloporphyrins and diazine tautomers was investigated using quantum chemistry method. The results showed that the metal atom in the metalloporphyrin was not coplanar with porphin ring, and zinc porphyrin has the most extent of its non-coplanar nature. The most stable complex in nine complexes was iron porphyrin. NBO analysis indicated that the interaction between the lone pair of electrons on the nitrogen atom and the unoccupied lone pair orbital of metal contributes significantly to the stability of the complexes. Through the conceptual DFT parameter and Fukui dual descriptor, the thermodynamic stability and reactivity of complexes were analyzed. The density difference function (DDF) analyzes were performed to explore the rearrangement of electronic density after the coordination interaction. NICS calculation indicated that metalloporphyrin aromaticity was reduced after the coordination interaction, and aromaticity of diazine tautomer was increased along direction vector of the coordination interaction force.

Identification and expression analysis of SQUAMOSA promoter-binding protein (SBP) genes in mungbean

Zhang Huiying,Guo Xu,Wang Zheng,Yu Zhaohang,Nie Kaiyue,Han Meng,Xu Xuexin,Zhu Hong 한국식물생명공학회 2023 Plant biotechnology reports Vol.17 No.3

SQUAMOSA promoter-binding protein (SBP) genes are important transcription factors involved in plant growth and development. However, the information about mungbean VrSBP genes is limited. In this study, we identified and characterized 22 VrSBP genes in the mungbean genome. Many characteristics of VrSBP genes were analyzed, and most VrSBP genes were considered to be expressed only in the nucleus. VrSBP genes were grouped into 9 subfamilies, with the exception of the g7 and ms subfamilies which are distinctive to Poaceae species. The g3 subfamily was the largest one with 6 VrSBP members. Eight segmental events were found among VrSBP genes, and all VrSBP duplicated genes were evolved via purification selection. The gene structure of VrSBP genes in the same subfamily was similar, and the conserved motifs are different among different subfamilies of VrSBP genes. Additionally, 12 VrSBP genes were considered to be the target genes of vra-miR156a. The types and numbers of cis-acting elements in VrSBP promoters were varied and VrSBP genes showed different expression patterns in different tissues. In addition, the protein interaction network revealed that VrSBP genes were involved in many development processes. Our study has provided important information which will allow the further functional characterization of VrSBP genes.

The Mediating Effects of Learning Motivation on the Association between Perceived Stress and Positive-Deactivating Academic Emotions in Nursing Students Undergoing Skills Training

Wang, Wei,Xu, Huiying,Wang, Bingmei,Zhu, Enzhi 한국간호과학회 2019 Journal of Korean Academy of Nursing Vol.49 No.4

Large Second-Order Nonlinearity from a Dip-Coated Pure Dye (4-(2-(3,3-Dicyanomethylene-5,5-Dimethyl-1-Cyclohexylidene) Vinyl)Phenyl(1-Naphthyl)Phenylamine) Thin Film

Pei Yang,Huiying Fu,Liying Liu,Liyong Ji,Lei Xu,Fei Xiao 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.5I

We found that the pure dye 4-(2-(3,3-dicyanomethylene-5,5-dimethyl-1-cyclohexylidene)vinyl) phenyl(1-naphthyl)phenylamine can form a solid-state thin film up to 31 nm in thickness by simple dip-coating. After electric poling, the molecular film was very well oriented along the poling field’s direction (ordering parameter = 0.36). The poled film gave a large resonant second-harmonic generation (SHG) signal ((2) = 591 pm/V when using 1064-nm laser light as the fundamental light) and non-resonant SHG ((2) = 232 pm/V when using 800-nm laser light as the fundamental light). The results show that such molecules can find applications in nonlinear photonic integrated circuits.

Superhydrophobic-Superoleophilic SiO2/Polystyrene Porous Micro/nanofibers for Efficient Oil-Water Separation

Yadan Ding,Dan Xu,Hong Shao,Tie Cong,Xia Hong,Huiying Zhao 한국섬유공학회 2019 Fibers and polymers Vol.20 No.10

SiO2/polystyrene porous micro/nanofibers with superhydrophobic and superoleophilic properties were preparedby facile electrospinning method. The spindle-beads-on-string structured fibers were found to be more hydrophobic thanthose without the beads. The doping of nano-SiO2 endowed the fibers with porous structure, and thus further increased thewater contact angle from 139 o to 153 o. Simultaneously, the oil contact angle of 0 o was obtained. The superhydrophobicsuperoleophilicmicro/nanofibers could selectively absorb oil from water within eight seconds. The oil sorption processfollowed pseudo-first order kinetic model. The absorption mechanism was proved to be physical encapsulation by Fouriertransform infrared technique. The maximum sorption capacity for highly viscous silicone oil was up to 122.7 g/g. It is higherthan many recently reported values. The porous micro/nanofibers exhibit significant value in oil-water separation.

A novel slippery liquid infused porous aluminum conductor with excellent corrosion resistance in simulated marine atmosphere

Tao Zhu,Yuan Yuan,Qi Yu,Huiying Xiang,Xu Dai,Guoyong Liu,Ruijin Liao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.127 No.-

The overhead aluminum conductors are prone to corrosion, especially in areas with marine climates,which interferes with the safe operation of the power system. Herein, slippery liquid infused porous surface(SLIPS) conductors were successfully prepared on pure aluminum (Bare) conductors by anodizingand infusion of silicone oil. The corrosion resistance of the conductors during 30 days of salt spray corrosionand 7 days of energized conditions was studied. The results indicated that the corrosion of theBare and anodic aluminum oxide (AAO) conductors was more severe under energized (alternating current(AC) and direct current (DC)) conditions. The exacerbation of corrosion by DC energization wasremarkably higher than that of AC energization. The AAO conductor showed better corrosion resistancethan the Bare conductor, which was attributed to the porous alumina retarding the medium intrusion. Due to the barrier effect provided by the lubricant layer, the SLIPS conductor always presented excellentcorrosion resistance than the Bare and AAO conductors. In addition, the mechanical and electrical propertiesof the SLIPS conductor were comparable to the Bare conductor and could satisfy the basic requirementsfor practical applications. The prepared SLIPS conductors offer great application prospects for thecorrosion protection of aluminum conductors.

Phenotypic and Molecular Characteristics of Children with Progressive Familial Intrahepatic Cholestasis in South China

Wen Zhang,Ruizhu Lin,Zhikun Lu,Huiying Sheng,Yi Xu,Xiuzhen Li,Jing Cheng,Yanna Cai,Xiaojian Mao,Li Liu 대한소아소화기영양학회 2020 Pediatric gastroenterology, hepatology & nutrition Vol.23 No.6

Purpose: Progressive familial intrahepatic cholestasis (PFIC) is a rare genetic autosomal recessive disease caused by mutations in ATP8B1, ABCB11 or ABCB4. Mutational analysis of these genes is a reliable approach to identify the disorder. Methods: We collected and analyzed relevant data related to clinical diagnosis, biological investigation, and molecular determination in nine children carrying these gene mutations, who were from unrelated families in South China. Results: Of the nine patients (five males, four females) with PFIC, one case of PFIC1, four cases of PFIC2, and four cases of PFIC3 were diagnosed. Except in patient no. 8, jaundice and severe pruritus were the major clinical signs in all forms. γ-glutamyl transpeptidase was low in patients with PFIC1/PFIC2, and remained mildly elevated in patients with PFIC3. We identified 15 different mutations, including nine novel mutations (p.R470HfsX8, p.Q794X and p.I1170T of ABCB11 gene mutations, p.G319R, p.A1047P, p.G1074R, p.T830NfsX11, p.A1047PfsX8 and p.N1048TfsX of ABCB4 gene mutations) and six known mutations (p.G446R and p.F529del of ATP8B1 gene mutations, p.A588V, p.G1004D and p.R1057X of ABCB11 gene mutations, p.P479L of ABCB4 gene mutations). The results showed that compared with other regions, these three types of PFIC genes had different mutational spectrum in China. Conclusion: The study expands the genotypic spectrum of PFIC. We identified nine novel mutations of PFIC and our findings could help in the diagnosis and treatment of this disease.

Stable Cu-Co/C carbon-based composites for efficiency catalytic degradation of Orange II by PMS: Effect factors, application potential analysis, and mechanism

Xiaodan Huang,Caihua Liu,Zhiyong Zhang,V. Vasanthakumar,Huiying Ai,Lei Xu,Ming-Lai Fu,Baoling Yuan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-

Carbon-based metallic catalysts (CMCs) have emerged as efficient materials for removing water contaminants,but preparing CMCs with high efficiency and stability remains a great challenge. In this study, weprepared a bimetallic composite of Cu-Co/C catalyst via a gelation and calcination method to degradeOrange II by activating peroxymonosulfate (PMS). The characterization results demonstrated that thespecific surface area and pore size of Cu-Co/C catalysts were 1.675 m2/g and 6.313 nm, respectively,which can provide larger catalytic active sites for boosting PMS activation. Moreover, the effects of differentfactors on Orange II degradation efficiency, cyclic experiments, and possible application in realwater bodies were investigated. The Cu-Co/C catalyst can effectively activate PMS, and 50 mg/L ofOrange II was almost completely removed within 15 min. Additionally, the Cu-Co/C catalyst exhibitedhigh degradation efficiency for other organic dye pollutants. The radical quenching experiments indicatedthat the main active species for Cu-Co/C catalyzed degradation of Orange II were SO4and singlet oxygen(1O2). The catalyst demonstrated good stability and performance in real water bodies. We believe thatthis study will promote the application of carbon-based bimetallic catalysts in the environmental remediationprocess that utilize SO4based advanced oxidation.

An efficient protocol for Agrobacterium-mediated transformation of the biofuel plant Jatropha curcas by optimizing kanamycin concentration and duration of delayed selection

Qiantang Fu,Chaoqiong Li,Mingyong Tang,Yan-Bin Tao,Bang-Zhen Pan,Lu Zhang,Longjian Niu,Huiying He,Xiulan Wang,Zeng-Fu Xu 한국식물생명공학회 2015 Plant biotechnology reports Vol.9 No.6

Jatropha curcas is considered a potential biodiesel feedstock crop. Currently, the value of J. curcas is limited because its seed yield is generally low. Transgenic modification is a promising approach to improve the seed yield of J. curcas. Although Agrobacterium-mediated genetic transformation of J. curcas has been pursued for several years, the transformation efficiency remains unsatisfying. Therefore, a highly efficient and simple Agrobacterium-mediated genetic transformation method for J. curcas should be developed. We examined and optimized several key factors that affect genetic transformation of J. curcas in this study. The results showed that the EHA105 strain was superior to the other three Agrobacterium tumefaciens strains for infecting J. curcas cotyledons, and the supplementation of 100 mM acetosyringone slightly increased the transient transformation frequency. Use of the appropriate inoculation method, optimal kanamycin concentration and appropriate duration of delayed selection also improved the efficiency of stable genetic transformation of J. curcas. The percentage of b-glucuronidase positive J. curcas shoots reached as high as 56.0 %, and 1.70 transformants per explant were obtained with this protocol. Furthermore, we optimized the root-inducing medium to achieve a rooting rate of 84.9 %. Stable integration of the T-DNA into the genomes of putative transgenic lines was confirmed by PCR and Southern blot analysis. Using this improved protocol, a large number of transgenic J. curcas plantlets can be routinely obtained within approximately 4 months. The detailed information provided here for each step of J. curcas transformation should enable successful implementation of this transgenic technology in other laboratories.