| Very few porphyrins are known to form J-aggregates, the main requisite being the zwitterionic character with the protonation of the pyrrole nitrogen in the macrocycle. |
| The main goal of the present article is to evaluate atomistic molecular dynamics simulations as tools for investigating monolayers of zwitterionic and anionic phospholipids. |
| Betaine is a zwitterionic compound and a methyl derivative of glycine. |
| The phosphatidylcholines and phosphatidylethanolamines are zwitterionic, meaning they have one negative and one positive charge on the substituent group. |
| The labelling of phosphatidylcholine was more than halved and replaced by increased labelling of other zwitterionic lipids. |
| This may be explained by the difference in interaction of the tip with the polar zwitterionic PC headgroups and the anionic oligosaccharide headgroups of the ganglioside. |
