Open AccessToxicity and Antimicrobial Activities of Ionic Liquids with Halogen Anion
Author(s) -
You Yu,
Yi Nie
Publication year - 2011
Publication title -
journal of environmental protection
Language(s) - English
Resource type - Journals
eISSN - 2152-2219
pISSN - 2152-2197
DOI - 10.4236/jep.2011.23033
Subject(s) - pyridinium , bacillus subtilis , ionic liquid , halogen , chemistry , toxicity , alkyl , antimicrobial , bacteria , escherichia coli , ion , ionic bonding , organic chemistry , biochemistry , biology , catalysis , genetics , gene
To investigate the eco-toxicity of ionic liquids (ILs), experiments on growth of three kinds of bacteria were carried out for six common ILs with halogen anion by a micro-calorimetric method at 310 k. The results indicate that the growth of all the bacteria was inhibited in the presence of ILs. In addition, all ILs at definite concentrations show some toxicity to Escherichia coli, Staphylococcus aureus and Bacillus subtilis. Anti-microbial activities of the ILs with halogen anion are strongly related to structures of the ILs. An increase in alkyl group chain length corresponds with an increase in toxicity, and the ILs with pyridinium cation exhibit stronger restraining effect than the same series ILs with imidazolium cation