نتایج جستجو برای: phenyl boron extractio is time

تعداد نتایج: 7838441  

Journal: :Journal of the Royal Society, Interface 2007
Christoph E Nebel Dongchan Shin Bohuslav Rezek Norio Tokuda Hiroshi Uetsuka Hideyuki Watanabe

A summary of photo- and electrochemical surface modifications applied on single-crystalline chemical vapour deposition diamond films is given. The covalently bonded formation of amine and phenyl linker molecular layers is characterized using X-ray photoelectron spectroscopy, atomic force microscopy (AFM), cyclic voltammetry and field-effect transistor characterization experiments. Amine and phe...

Journal: :Dalton transactions 2008
Warwick J Belcher Michael C Hodgson Kenji Sumida Ana Torvisco Karin Ruhlandt-Senge D C Ware P D W Boyd P J Brothers

The reactions of boron halides with free base porphyrins under conditions where partial hydrolysis of the boron halides can occur give diboron porphyrin complexes containing BOB moieties in which each boron is bonded to two porphyrin nitrogen atoms. BF(3).OEt(2) with H(2)(por) gives B(2)OF(2)(por) (por = tpp, ttp, tpClpp, oep) which has an asymmetric structure in which one boron lies in the por...

2012
Avinash N Bhute B. B. Meshram

As large amount of visual Information is available on web in form of images, graphics, animations and videos, so it is important in internet era to have an effective video search system. As there are number of video search engine (blinkx, Videosurf, Google, YouTube, etc.) which search for relevant videos based on user “keyword” or “term”, But very less commercial video search engine are availab...

2011
Cathryn A. Slabber Matthew P. Akerman Ross S. Robinson

The title compound, C(17)H(15)BN(2)S, is one member in a series of diaza-borinanes featuring substitution at the 1-, 2- and 3-positions in the nitro-gen-boron heterocycle. The dihedral angle between the mean planes of the naphthalene and phenyl ring systems is 19.86 (6)°. In the crystal structure, two C-H⋯π inter-actions link the mol-ecules into sheets which lie parallel to the bc plane. There ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و زبانهای خارجی 1390

bserved by many teachers that most of the time, mumbling and searching for their intended words, students complain why they have forgotten the words they have learned in the previous semesters. they ask for some new ways that may help them to recall and apply the learned words more efficiently, since as they declare one of the most important skills in foreign language learning is having a g...

Journal: :Acta Crystallographica Section E Structure Reports Online 2010

C. Geng, C. Gong, D. Shu, H. Yu, S. Fatemi, W. Shao, X. Tang,

Background: Boron neutron capture therapy (BNCT) is a binary radiotherapy combining biochemical targeting with neutron irradiation. However, monitoring the boron distribution is a fundamental problem in BNCT. Prompt gamma rays emitted by boron capture reaction can be used to address the issue. Materials and Methods: The general-purpose Monte Carlo toolkits Geant4 and MCNP were used for the simu...

2013
Zhensheng Li

The title compound, C26H24BF2N3O, comprises a boron-dipyrromethene (BODIPY) framework and a phenolic Schiff base substituent group. The BODIPY unit is close to planar [maximum deviation from the least-squares plane = 0.040 (3) Å], and forms a dihedral angle of 80.38 (13)° with the meso-substituent phenyl ring and an angle of 56.57 (13)° with the phenolic ring in the extended substituent chain. ...

2016
Yuan Gao Fangming Jin Wenlian Li Zisheng Su Bei Chu Junbo Wang Haifeng Zhao Hairuo Wu Chengyuan Liu Fuhua Hou Tong Lin Qiaogang Song

We report a small molecule tandem organic photovoltaic (OPV) cell with a high power conversion efficiency (PCE) of 7.27%. This cell contains two subcells with an identical mixed active layer of C70:5 wt%TAPC (1,1-bis-(4-bis(4-methyl-phenyl)-amino-phenyl)-cyclohexane). The performance was dramatically improved by simply inserting a thin boron subphthalocyanine chloride (SubPc) interlayer, which ...

Journal: :Organic & biomolecular chemistry 2011
Guang-Liang Fu Hong Pan Yi-Hong Zhao Cui-Hua Zhao

We disclose two novel BODIPY dyes, which contain the bulky substituent, [(4-dimesitylboryl)phenyl]ethynyl at 2- and 2,6-positions. The steric bulkiness of the boryl group is effective to suppress the intermolecular interaction in the solid state and thus these two compounds display intense fluorescence not only in solution but also in the solid state. In addition, the BODIPY dyes display sensit...

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