経静脈的冠動脈血栓溶解療法, intravenous coronary thrombolysis

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/07/23 22:32:51」(JST)

In chemistry, intervalence charge transfer, often abbreviated IVCT or even IT, is an electron transfer (thermal or photoinduced) between two metal sites differing only in oxidation state. Quite often such electron transfer reverses the oxidation states of the sites. The term is frequently extended to the case of metal-to-metal charge transfer between non-equivalent metal centres. ^[1]

Typically, such a process produces a characteristic absorption in the electromagnetic spectrum of the compound involved. The phenomenon is most often observed in mixed-valence bi- and polymetallic coordination complexes. The IVCT band is usually observed in the visible or near infrared region of the spectrum and is broad.

The process can be described as follows:

L_nM⁺-bridge-M'L_n + hν → L_nM-bridge-M'⁺L_n

where L is a ligand.

Mixed valency and the IT band

Since the energy states of valence tautomers affect the IVCT band, the strength of electronic interaction between the sites, known as α (the mixing coefficient), can be determined by analysis of the IVCT band.^[2] Depending on the value of α, mixed valence complexes are classified into three groups:

class I: α ~ 0, the complex has no interaction between redox sites. No IVCT band is observed. The oxidation states of the two metal sites are distinct and do not readily interconvert.
class II: 0 < α < = 0.707, intermediate interaction between sites. An IVCT band is observed. The oxidation states of the two metal sites are distinct, but they readily interconvert. This is by far the most common class of intervalence complexes.
class III: α > = 0.707, interaction between redox sites is very strong. It is better to consider these sites as one united site, not as two isolated sites. An IVCT band is observed. The oxidation states of the two metal sites are essentially equivalent. In these situations, the two metals are often best described as having the same half integer oxidation state.

References

^ http://goldbook.iupac.org/I03125.html Article: intervalence charge transfer
^ G. L. Miessler and D. A. Tarr “Inorganic Chemistry” 3rd Ed, Pearson/Prentice Hall publisher, ISBN 0-13-035471-6.

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1. 悪性高熱症の易罹患性：評価およびマネージメント susceptibility to malignant hyperthermia evaluation and management

English Journal

Electronic reorganization triggered by electron transfer: the intervalence charge transfer of a Fe³⁺/Fe²⁺ bimetallic complex.

Domingo A1, Angeli C, de Graaf C, Robert V.
Journal of computational chemistry.J Comput Chem.2015 Apr 30;36(11):861-9. doi: 10.1002/jcc.23871. Epub 2015 Mar 5.
The key role of the molecular orbitals in describing electron transfer processes is put in evidence for the intervalence charge transfer (IVCT) of a synthetic nonheme binuclear mixed-valence Fe(3+)/Fe(2+) compound. The electronic reorganization induced by the IVCT can be quantified by controlling th
PMID 25739890

Prognostic value of cardiac time intervals measured by tissue Doppler imaging M-mode in the general population.

Biering-Sørensen T1, Mogelvang R2, Jensen JS1.
Heart (British Cardiac Society).Heart.2015 Apr 20. pii: heartjnl-2014-307137. doi: 10.1136/heartjnl-2014-307137. [Epub ahead of print]
OBJECTIVE: Tissue Doppler imaging (TDI) M-mode through the mitral leaflet is an easy and precise method to estimate the cardiac time intervals. The aim was to evaluate the usability of the cardiac time intervals in predicting major cardiovascular events (MACE) in the general population.METHODS: In a
PMID 25897041

Synthesis and (spectro)electrochemistry of mixed-valent diferrocenyl-dihydrothiopyran derivatives.

Kowalski K1, Karpowicz R, Mlostoń G, Miesel D, Hildebrandt A, Lang H, Czerwieniec R, Therrien B.
Dalton transactions (Cambridge, England : 2003).Dalton Trans.2015 Apr 7;44(13):6268-76. doi: 10.1039/c5dt00246j.
Three novel diferrocenyl complexes were prepared and characterised. 2,2-Diferrocenyl-4,5-dimethyl-3,6-dihydro-2H-thiopyran (1, sulphide) was accessible by the hetero-Diels-Alder reaction of diferrocenyl thioketone with 2,3-dimethyl-1,3-butadiene. Stepwise oxidation of 1 gave the respective oxides 2,
PMID 25739892

Japanese Journal

Histological Study and LYVE-1 Immunolocalization of Mouse Mesenteric Lymph Nodes with “In Vivo Cryotechnique”

Bai Yuqin,Wu Bao,Terada Nobuo,Ohno Nobuhiko,Saitoh Sei,Saitoh Yurika,Ohno Shinichi
ACTA HISTOCHEMICA ET CYTOCHEMICA advpub(0), 1104190107, 2011
… The “in vivo cryotechnique” (IVCT) is a powerful tool to directly freeze living animal organs in order to maintain biological components in frozen tissues, reflecting their native states. … In this study, mesenteric lymph nodes of living mice were directly frozen with IVCT, and we did morphological studies and immunohistochemical analyses on a hyaluronic acid receptor, LYVE-1. …
NAID 130000648760

Immunohistochemical Distribution of Serum Proteins in Living Mouse Heart with In Vivo Cryotechnique

Shi Liye,Terada Nobuo,Saitoh Yurika,Saitoh Sei,Ohno Shinichi
ACTA HISTOCHEMICA ET CYTOCHEMICA advpub(0), 1103250100, 2011
… In vivo cryotechnique (IVCT), which immediately cryofixes target organs in situ, was used to clarify the morphological features of beating heart tissue of living mice. … IVCT was performed for diastolic heart tissue under the condition of monitoring with electrocardiogram (ECG). …
NAID 130000648758

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