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The Effect of Micro-Pulsatile Electrical and Ultrasound Stimulation on Cellular Biosynthetic Activities Such as Cellular Proliferation, Endogenous Nitrogen Oxide and Collagen Synthesis

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Journal of Cosmetics, Dermatological Sciences and Applications 2016年第1期6卷 41-47页

作者： Doris-Antoinette Mbeh Insaf Hadjab mihaela-elena ungur L’Hocine Yahia Laboratory of Innovation and Analysis of Bioperformance (LIAB) Mechanical/Biomedical Engineering Department Polytechnique Montréal Montreal Canada

The skin barrier poses an ongoing challenge for the cosmetics industry. Its penetration, by non-invasive means, can readily be achieved with currents and ultrasound or radiofrequency devices through electroporation, sonophoresis, iontophoresis or cavitation. When several types of energy are applied simultaneously, we expect the effects to be magnified and all the more effective. Although the mechanism of action of each technology on the skin is not entirely controlled, and is even less so when multiple technologies are applied concurrently, some studies demonstrate that nitric oxide (NO) plays a pivotal role in skin wound-healing and regeneration. With regard to wound healing, one of the key functions of NO appears to be its permissive effect on keratinocyte and fibroblast proliferation, which helps promote wound re-epithelialization. The objective of the actual research is to gain an in-depth understanding of the mechanisms generated by NO through the application of a specific combination of technologies.

关键词： Collagen Fibroblasts NO Aesthetic Technologies Ultrasounds Electric Current

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Multiresponsive Spin Crossover Driven by Rotation of Tetraphenylborate Anion in an Iron(Ⅲ)Complex

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CCS Chemistry 2021年第1期3卷 453-459页

作者： Si-GuoWu Md.Najbul Hoque Jie-Yu Zheng Guo-Zhang Huang Nguyen Vu Ha Anh Liviu ungur Wei-Xiong Zhang Zhao-Ping Ni Ming-Liang Tong Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of ChemistrySun Yat-Sen UniversityGuangzhou 510275 Department of Chemistry National University of SingaporeSingapore 117543

Dynamic molecular materials,which involvemechanical motions in crystals,usually exhibit tunable properties related to conformational ***,we describe a solvent-free molecular crystal[{FeⅢ(salten)}2(TPB)](BPh_(4))_(2)(Ⅰ)developed by associating the rotatable tetraphenylborate anion with the spin crossover(SCO)binuclear iron(Ⅲ)*** solvent-free phaseⅠcan undergo a temperature-induced phase transformation to phaseⅡ,during which rotation of the BPh4−anion interplays with the SCO component,giving rise to fascinating variations in SCO(from gradual to abrupt)and dielectric *** importantly,an unexpected polymorphic transformation fromⅡtoⅢorⅣ,with increasing magnetic hysteresis,is realized by exposingⅡto water or ethanol vapor;the transition is reversible by *** rare successive transformation is further rationalized by theoretical ***,this multiresponse system provides a new way for modulating synergistic effects and designing dynamic SCO materials by integrating intramolecular motions in the crtystal lattice.

关键词： intramolecular motion iron(Ⅲ) spin crossover polymorph single-crystal-to-singlecrystal transformation

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D5h-Symmetric Dy（Ⅲ） Single-Ion Magnets Based on Phosphine Oxides: Suppression of QTM, micro-SQUID Measurement and Luminescence Study

D5h-Symmetric Dy（Ⅲ） Single-Ion Magnets Based on Phosphine...

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中国化学会第七届全国结构化学学术会议

作者： Yan-Cong Chen Yan-Hua Lan Liviu ungur Liviu F.Chibotaru Wolfgang Wernsdorfer Ming-Liang Tong Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry and Chemical EngineeringSun Yat-Sen University

＜正＞As the promising candidates for high-density information storage,quantum processing and spintronics,a SMM shall combine the large energy barrier,high blocking temperature and controllable quantum tunnelling of magnetization（QTM）.It has been evidenced that some typical coordination symmetries,such as D5h,can reduce the overlap of wave functions and therefore

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Desolvation-Driven 100-Fold Tunneling Relaxation Slow-down in Co（Ⅱ）-Dy（Ⅲ） Single-Molecule Magnets

Desolvation-Driven 100-Fold Tunneling Relaxation Slow-down i...

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中国化学会第九届全国无机化学学术会议

作者： Guo-Zhang Huang Jun-Liang Liu Jie-Yi Wu Yan-Cong Chen Jian-Hua Jia Liviu ungur Liviu F.Chibotaru Ming-Liang Tong Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education School of Chemistry and Chemical EngineeringSun Yat-Sen University Theory of Nanomaterials Group and INPAC – Institute of Nanoscale Physics and Chemistry Katholieke Universiteit LeuvenCelestijnenlaan 200F

Single-molecule magnets（SMMs）are regarded as a class of promising materials for spintronic and ultrahigh-density storage *** the magnetic dynamics of single-molecule magnets is a crucial challenge for chemists[1,2].Lanthanide ions are not only highly magnetically anisotropic but also highly sensitive to changes in the coordination *** developed a feasible approach to understand parts of the magneto-structure correlations and propose to regulate the relaxation behaviors via rational design.A series of Co（Ⅱ）-Dy（Ⅲ）-Co（Ⅱ）complexes were obtained using in situ synthesis;in this system of complexes,the relaxation dynamics can be greatly improved,accompanied with desolvation,via single-crystal to single-crystal *** effective energy barrier can be increased from 293 cm-1（422 K）to 416 cm-1（600 K）,and the tunneling relaxation time can be grown from 8.5×10-4 s to 7.4×10-2 *** remarkable improvements are due to the change in the coordination environments of Dy（Ⅲ）and Co（Ⅱ）.Ab initio calculations were performed to better understand the magnetic dynamics.

关键词： Single-molecule magnets tunneling relaxation magneto-structure correlations ab initio calculations

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Suppression of quantum tunneling of magnetization at zero applied field in D5h-Symmetric Dy（Ⅲ） Single-Ion Magnets

Suppression of quantum tunneling of magnetization at zero ap...

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第七届全国物理无机化学学术会议

作者： J.Liu Y.-C.Chen J.-L.Liu Y.Lan V.Vieru L.ungur L.F.Chibotaru W. Wernsdorfer M.-L.Tong School of Chemistry Sun Yat-Sen University

＜正＞Single-molecule magnets（SMMs）with a large spin reversal barrier have been recognized to exhibit slow magnetic relaxation that can lead to a magnetic hysteresis loop.[1]Synthesis of highly stable single-molecule magnets with both large energy barriers and significantly slow relaxation times is challenging.[2]Here,we report two highly stable and neutral Dy（Ⅲ）classical coordination compounds with

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