Aggregation of Egg-Lecithin Vesicles Induced by Iron(III) Chloride
✍ Scribed by Hideki Takahara
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 308 KB
- Volume
- 211
- Category
- Article
- ISSN
- 0021-9797
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✦ Synopsis
Aggregation behaviors of egg-lecithin vesicles were investigated. The crowded vesicle solution exhibited an irregular aggregation style in the presence of FeCl 3 . The process was composed of an induction period (2-5 days) and a sedimentation process (ϳ12 h). The vesicles were stabilized by the positively charged species such as [(H 2 O) 4 Fe(OH) 2 Fe(H 2 O) 4 ] 4؉ in the induction periods. However, after the stationary state, the vesicles began to coagulate due to the transformation of the iron species into the inactive one. The existence of such time-lag for the aggregation to occur was mainly induced by the transient nature of iron(III) in the aqueous solution.