PMID- 22404136 OWN - NLM STAT- MEDLINE DCOM- 20121029 LR - 20131121 IS - 1944-8252 (Electronic) IS - 1944-8244 (Linking) VI - 4 IP - 4 DP - 2012 Apr TI - Preparation and antimicrobial properties of gemini surfactant-supported triiodide complex system. PG - 2116-23 LID - 10.1021/am300094f [doi] AB - Iodine is an effective, simple, and inexpensive bactericide in disinfection. However, the poor solubility and stability of iodine in water limit its applications. In addition, the active iodine content in the commercial iodophors is quite low, and the reported triiodide complex is unstable. In this work, a long-term stable triiodide complex antimicrobial system was prepared by mixing iodine and a cationic gemini surfactant into lauryldimethylamine oxide (LDAO) aqueous solution, and its stability was examined by means of UV-vis spectrophotometry. It was found that the content of LDAO, cationic gemini surfactant and H(2)SO(4) played crucial roles in stabilizing antimicrobial system, and the active iodine (i.e., triiodide complex) content of the optimum formulation can remain stable for 150 days, as iodine is encapsulated by the mixed vesicles assembled by the protonated LDAO and the added gemini surfactant. However, the active iodine reduced rapidly when NaCl was added or the pH was increased in the environment. Furthermore, the antimicrobial efficacy of the optimized formulation was studied against Candida albicans, and more than 4 log reduction in viable cell after 5 min of contact was obtained. FAU - He, Shuai AU - He S AD - Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, People's Republic of China. FAU - Wang, Biqing AU - Wang B FAU - Chen, Honglin AU - Chen H FAU - Tang, Chongli AU - Tang C FAU - Feng, Yujun AU - Feng Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120321 PL - United States TA - ACS Appl Mater Interfaces JT - ACS applied materials & interfaces JID - 101504991 RN - 0 (Antifungal Agents) RN - 0 (Quaternary Ammonium Compounds) RN - 0 (Surface-Active Agents) RN - 9679TC07X4 (Iodine) SB - IM MH - Antifungal Agents/*chemistry/pharmacology MH - Candida albicans/drug effects/growth & development MH - Drug Stability MH - Hydrogen-Ion Concentration MH - Iodine/chemistry/*pharmacology MH - Quaternary Ammonium Compounds/*chemistry/pharmacology MH - Surface-Active Agents/*chemistry/pharmacology EDAT- 2012/03/13 06:00 MHDA- 2012/10/30 06:00 CRDT- 2012/03/13 06:00 PHST- 2012/03/13 06:00 [entrez] PHST- 2012/03/13 06:00 [pubmed] PHST- 2012/10/30 06:00 [medline] AID - 10.1021/am300094f [doi] PST - ppublish SO - ACS Appl Mater Interfaces. 2012 Apr;4(4):2116-23. doi: 10.1021/am300094f. Epub 2012 Mar 21.