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Spectroscopic observation of jet-cooled 2,5-dichlorobenzyl radical generated by corona discharge
Yi, E.H.,Yoon, Y.W.,Lee, S.K. North Holland 2014 Chemical physics letters Vol.608 No.-
Vibronically excited but jet-cooled 2,5-dichlorobenzyl radical was generated from 2,5-dichlorotoluene precursor in a large excess of helium carrier gas, from which the visible vibronic emission spectrum was recorded. From an analysis of the spectrum observed, it was found that the origin band shows larger shift to red than those expected from mono-substitutions, which has been discussed in terms of orientation of substituents. Also, the electronic energy of the D<SUB>1</SUB>→D<SUB>0</SUB> transition and vibrational mode frequencies at the ground electronic state of the 2,5-dichlorobenzyl radical were determined in comparison with the known vibrational data of precursor and ab initio calculations.
Radicals generated from 2-chloro-5-fluorotoluene by corona discharge
Yi, E.H.,Yoon, Y.W.,Lee, S.K. North Holland 2014 Chemical physics letters Vol.605 No.-
The generation of molecular radicals in corona discharge was investigated spectroscopically by varying the experimental conditions applied to a substituted toluene precursor. Vibronic emission spectra were observed from the corona discharge of 2-chloro-5-fluorotoluene seeded in a large amount of carrier gas helium. From an analysis of emission spectra observed, it was confirmed that bond dissociation energy plays a key role in radical formation. The possible pathway for the formation of benzyl-type radicals is proposed to explain the observation.
Prognostic Value of AML1/ETO Fusion Transcripts in Patients with Acute Myelogenous Leukemia
( Eun Kyung Cho ),( Soo Mee Bang ),( Jeong Yeal Ahn ),( Seung Min Yoo ),( Pil Whan Park ),( Yieh Hea Seo ),( Dong Bok Shin ),( Jae Hoon Lee ) 대한내과학회 2003 The Korean Journal of Internal Medicine Vol.18 No.1
Background: The t (8;21) (q22;q22), which produces the fusion gene AML1/ETO, is associated with relatively good prognosis and, in particular, with a good response to cytosine arabinoside. Analysis of t (8:21) positive leukemic blasts has shown characteris