| 两种新的水溶性卟啉的离解常数测定及酸碱诱导聚合 |
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| 引用本文： | 刘志贤,陈钢进.两种新的水溶性卟啉的离解常数测定及酸碱诱导聚合[J].化学试剂,1996,18(5):260-262. |
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| 作者姓名： | 刘志贤 陈钢进 |
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| 作者单位： | [1]河北师范大学化学系 [2]浙江师范大学化学系 |
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| 摘 要： | 研究了ｍｅｓｏ－四卟啉和ｍｅｓｏ－四卟啉的离解常数。ＴＢＰｈＰ的离解常数为：ｐＫａ４＝１．１３．ｐＫａ３＝１．８８，ｐＫＡ２＝１２．２１；ＴＴＰＳ的离解常数为：ｐＫａ４＝４．４７，ｐＫａ３＝６．２６。外还发现了两卟啉的酸碱诱导聚合。
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| 关 键 词： | 离解常数 卟啉 自由碱 等吸收点 诱导聚合 |
Determination of acid-base dissociation constants of new water-soluble porphyrins and their aggregation behaviors by acid-base |
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| Liu Zhixian.Determination of acid-base dissociation constants of new water-soluble porphyrins and their aggregation behaviors by acid-base[J].Chemical Reagents,1996,18(5):260-262. |
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| Authors: | Liu Zhixian |
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| Abstract: | The acid-base equilibria of two water-soluble porphyrins (meso-tetrakis (4-N-benzylpyridinyl) porphyrin(TBPyP), meso-tetrakis (3-sulpho-4-methylphenyl) porphyrin(TTPS4) were investigated spectrophotometrically. The pKa values of the two porphyrins are as follows: pKa4=1.13, pKa3=1.88, pKa2=12. 21 for TBPyP and pKa4=4.47, pKa3=6.26 for TTPS4. The aggregation phenomena by acid-base of the two porphyrins are found in their dilute solutions. TTPS4 is aggregated in acidic solution and TBPyP in basic solution. |
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| Keywords: | dissociation constant porphyrin free base isobestic point induced aggregation |
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