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Phosphorus Sulfur and Silicon and The Related Elements最新文献

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Three-component reaction for an efficient synthesis of 5-hydroxy-1-phenyl-1H-pyrazoles containing a stable phosphorus ylide moiety 三组分反应高效合成含稳定磷酰化基团的5-羟基-1-苯基- 1h -吡唑
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-23 DOI: 10.1080/10426507.2018.1437619
Ehsan Ghonchepour, M. Islami, H. Mostafavi, Ahmad Momeni Tikdari
{"title":"Three-component reaction for an efficient synthesis of 5-hydroxy-1-phenyl-1H-pyrazoles containing a stable phosphorus ylide moiety","authors":"Ehsan Ghonchepour, M. Islami, H. Mostafavi, Ahmad Momeni Tikdari","doi":"10.1080/10426507.2018.1437619","DOIUrl":"https://doi.org/10.1080/10426507.2018.1437619","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT A concise synthesis of new polysubstituted pyrazoles containing a phosphorane is achieved from readily available organic compounds. This C–H bond functionalization is an efficient means of selectively substituting 4-position of pyrazole to produce a five-membered aromatic ring with a chain containing ylide moiety. This protocol requires no additional catalyst and can be used for other pyrazoles including different substituents.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"98 1","pages":"459 - 463"},"PeriodicalIF":0.0,"publicationDate":"2018-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74880008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Expeditious synthesis of 9-allenylpurines via cesium carbonate catalyzed isomerization of 9-alkynylpurines 碳酸铯催化9-炔基嘌呤异构化快速合成9-烯基嘌呤
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-13 DOI: 10.1080/10426507.2018.1436547
Mingwu Yu, Xiguang Liu, Q. Jiang, H. Du
{"title":"Expeditious synthesis of 9-allenylpurines via cesium carbonate catalyzed isomerization of 9-alkynylpurines","authors":"Mingwu Yu, Xiguang Liu, Q. Jiang, H. Du","doi":"10.1080/10426507.2018.1436547","DOIUrl":"https://doi.org/10.1080/10426507.2018.1436547","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT An expeditious and convenient method to synthesize 9-allenylpurines via cesium carbonate catalyzed isomerization of 9-alkynylpurines has been successfully developed. The reactions proceeded rapidly under the base conditions and formed the desired products in good to excellent yields. The method was suitable with a broad substrate scope and proceeded well even on a multgram-scale. The obtained 9-allenylpurines were successfully applied to prepare various potential bioactive 9-acyclic nucleosides with high regioselectivity promoted by AgNO3.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"26 1","pages":"451 - 458"},"PeriodicalIF":0.0,"publicationDate":"2018-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86641283","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Ag+-ion implantation of silicon 银离子注入硅
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417307
A. Stepanov, V. Nuzhdin, V. Valeev, V. Vorobev, Y. Osin
{"title":"Ag+-ion implantation of silicon","authors":"A. Stepanov, V. Nuzhdin, V. Valeev, V. Vorobev, Y. Osin","doi":"10.1080/10426507.2017.1417307","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417307","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT The new results on the optical reflection of the Si surface layers implanted by silver ions at low energies of 30 keV over a wide dose range from 5.0 × 1014 to 1.5 × 1017 ion/cm2 are presented. As the ion dose of irradiation was increased, a monotonic decrease in the reflection intensity in the ultraviolet region of the spectrum was observed, due to amorphization and macrostructuring of the Si surface. On the other hand, in the long-wavelength region, a selective reflection band appears with a maximum near 830 nm due to plasmon resonance of Ag nanoparticles synthesized during implantation.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"41 1","pages":"110 - 114"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86251469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An algorithm for boron diffusion in MOS transistors using Silvaco Athena and MATLAB 基于Silvaco Athena和MATLAB的MOS晶体管硼扩散算法
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417305
N. Guenifi, R. Mahamdi, I. Rahmani
{"title":"An algorithm for boron diffusion in MOS transistors using Silvaco Athena and MATLAB","authors":"N. Guenifi, R. Mahamdi, I. Rahmani","doi":"10.1080/10426507.2017.1417305","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417305","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT In this paper we have developed an algorithm of boron diffusion after thermal annealing in a highly doped polysilicon film. This algorithm takes into account electrically active point defects by associating some parameters such as boron solubility limit and diffusion coefficient. We have studied effect of annealing temperature in order to perform impact of this parameter on maximum depth diffusion of junction and maximum of concentration by analysis of Secondary Ion Mass Spectrometry (SIMS) profiles. In fact we have proposed numerical model based on Fick's equation, resolved by finite difference method under Matlab also we have simulated this phenomenon by Silvaco software.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"18 1","pages":"103 - 98"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91262735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Co-assembled ZnO (shell) – CuO (core) nano-oxide materials for microbial protection 协同组装ZnO(壳)- CuO(芯)纳米氧化物材料用于微生物保护
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417301
K. Varaprasad
{"title":"Co-assembled ZnO (shell) – CuO (core) nano-oxide materials for microbial protection","authors":"K. Varaprasad","doi":"10.1080/10426507.2017.1417301","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417301","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT Development of efficient antimicrobial metal-oxide nanoparticles (MONPs) is important to advance in the biomedical and in the industrial fields. Herein, ZnO-CuO nanoparticles with improved antibacterial were developed by simple double precipitation technique and their properties were studied. The bactericide ability of ZnO-CuO nanoparticles was investigated against Escherichia coli. The ZnO-CuO0.5 exhibited high activity against E.coli at high and low concentration levels. The MONPs were analyzed via FTIR, UV-visible/DRS, PL, SEM/EDS, TEM, XRD and TGA analysis. These results show the formation of hexagonal wurtzite-monoclinic phase morphology and the thermal characteristics of the ZnO-CuO nanoparticles emphasize the potential of these dual nanooxide materials. The intensity of the emission band of ZnO was decreased following the increase in the CuO concentrations and the order is as follows: CuO < ZnO-CuO0.5 < ZnO-CuO0.1 < ZnO. The co-assembled MONPs developed may function as potential candidates for advanced biomedical and industrial applications.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"93 1","pages":"74 - 80"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83883581","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Focalizing slow neutron beams at and below micron scales: Discussion on BNCT 微米及微米以下的慢中子束聚焦:关于BNCT的讨论
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417300
R. F. Álvarez-Estrada, I. M. de la Peña, M. L. Calvo
{"title":"Focalizing slow neutron beams at and below micron scales: Discussion on BNCT","authors":"R. F. Álvarez-Estrada, I. M. de la Peña, M. L. Calvo","doi":"10.1080/10426507.2017.1417300","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417300","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT We outline some general properties of slow neutrons and their interactions in material media, their use in Boron Neutron Capture Therapy (BNCT) and their waveguiding properties. We review two important experiments on slow neutron confined propagation: in thin films and in polycapillary glass fibres. Based upon the first experiment and on previous proposals, we formulate two new proposals regarding possibilities for improved focalization (at and a bit below one micron) and propagation along longer lengths (up to about 1 m) with relatively small attenuation, and discuss possible implications for BNCT of small tumours. We emphasize the general interest and possible applications of exploring short scales by means of slow neutrons, through suitable combinations of the devices involved in those two experiments.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"100 1","pages":"64 - 73"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74257526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Characterizing slow state near Si-SiO2 in MOS structure MOS结构中近Si-SiO2慢态的表征
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417303
N. Guenifi, D. Bauza, R. Mahamdi
{"title":"Characterizing slow state near Si-SiO2 in MOS structure","authors":"N. Guenifi, D. Bauza, R. Mahamdi","doi":"10.1080/10426507.2017.1417303","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417303","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT The Equilibrium Voltage Step (EVS) technique has been used for extraction of depth and energy concentration profile of traps situated in the oxide of a lightly stressed metal-oxide-semiconductor (MOS) structure. This has been achieved up to the very near Si-SiO2 interface. The results are discussed and compared with those obtained using charge pumping (CP) technique. A good agreement is achieved between the trap densities extracted using the two methods even though differences in the shape of the profiles can be observed. The results also very well agree with those published previously using current deep level transient spectroscopy (C-DLTS).","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"25 1","pages":"88 - 91"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74010692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Boron phosphorus and arsenic diffusion in MOS transistors: Simulation and analysis in 2D and 3D 硼磷和砷在MOS晶体管中的扩散:二维和三维的模拟和分析
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2017.1417304
N. Guenifi, R. Mahamdi, I. Rahmani
{"title":"Boron phosphorus and arsenic diffusion in MOS transistors: Simulation and analysis in 2D and 3D","authors":"N. Guenifi, R. Mahamdi, I. Rahmani","doi":"10.1080/10426507.2017.1417304","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417304","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT The article introduces the benefits and application features of Silvaco Technology Computer Aided Design ‘TCAD’ tool to predict the performance of electrical components and their reliability. In this work, in order to improve the electrical parameters of MOS transistor such as, threshold voltage and flat band voltage, we have simulated Phosphorus and Arsenic diffusion profiles in three dimensions before and after thermal annealing in a highly doped polysilicon film using the simulator Silvaco TCAD based on Pearson type IV models. The model takes into account the distribution of vacancy mechanisms and effects related to high concentrations, such as the formation of clusters to study solid solubility limit. The results have been analyzed and discussed in order to extract depth of doping (Phosphorus and Arsenic) and they have been able to optimize the silicon oxide thickness, to reduce the penetration of doping. Based on earlier studies a study of the effect of solubility on these profiles was performed.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"71 1","pages":"92 - 97"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83941461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Foreword for International Conference on Phosphorus, Boron and Silicon 2017 2017磷、硼和硅国际会议前言
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-02-01 DOI: 10.1080/10426507.2018.1430435
M. Rudd
{"title":"Foreword for International Conference on Phosphorus, Boron and Silicon 2017","authors":"M. Rudd","doi":"10.1080/10426507.2018.1430435","DOIUrl":"https://doi.org/10.1080/10426507.2018.1430435","url":null,"abstract":"","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"1 1","pages":"63 - 63"},"PeriodicalIF":0.0,"publicationDate":"2018-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90050769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New addition and cyclization reactions involving phosphorus based allenes 磷基烯的新加成和环化反应
Phosphorus Sulfur and Silicon and The Related Elements Pub Date : 2018-01-15 DOI: 10.1080/10426507.2017.1417302
K. Swamy, M. Pavan, M. Anitha, G. Gangadhararao
{"title":"New addition and cyclization reactions involving phosphorus based allenes","authors":"K. Swamy, M. Pavan, M. Anitha, G. Gangadhararao","doi":"10.1080/10426507.2017.1417302","DOIUrl":"https://doi.org/10.1080/10426507.2017.1417302","url":null,"abstract":"GRAPHICAL ABSTRACT ABSTRACT In this paper, we describe convenient methods for functionally active phenol addition reaction of allenylphosphonates/allenyl phosphine oxides. These reactions lead to either vinyl or allylphosphonates. In the reaction α-aryl allenylphosphonates with 2-iodophenol in the presence of Pd nanoparticles [Pd-PVP] isomeric vinylphosphonates are preferentially obtained. A novel cyclization reaction of 2-iodo-t-butylbenzaldimine with and allenylphosphine oxide that leads to an isoquinoline is also discovered; the product is characterized by single crystal X-ray structure determination.","PeriodicalId":20043,"journal":{"name":"Phosphorus Sulfur and Silicon and The Related Elements","volume":"94 1","pages":"81 - 87"},"PeriodicalIF":0.0,"publicationDate":"2018-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85288651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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