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* PDF α Ͻñ ٶϴ. |
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/ȣ |
1993 / ȣ: V.5,no.3,Sept |
1() |
3,3-Diethyl-9-Methyl-Thiacarbocyanine 2 ȸü ظ |
2(Ÿ) |
Dissociation Equilibrium of Dimeric Association of 3,3-Diethyl-9-Methyl-Thiacarbocyanine Dye |
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輺 (ϴб а) ȫ (ϴб а) ۰ (б Ƿа) ӿ (ϴб а) |
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輺 (ϴб а) ȫ (ϴб а) ۰ (б & |
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216 ~ 220 : 5 |
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Korean |
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Dissociation constants and heat of dissociation of dimers of 3, 3\\\'-diethyl-thiacarbocyanine dye(Dye 2) have been studied. At , absorption spectra of 2 vol% aqueous ethanol solutions of Dye 2 showed monomer and dimer bands. From the temperature dependence of monomer absorbance, dissociation constants K and were estimated to be and 3kcal/mol, respectively. These K valus are about one half of those for 3,3\\\'-diethyl-2,2\\\'-cyanine dye with one methine carbon, indication a higher dimer stability than that of 3,3-diethyl-2,2\\\'-cyanine dye. |
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