Dipole-driven self-organization of zwitterionic molecules on alkali halide surfaces.
Dipole-driven self-organization of zwitterionic molecules on alkali halide surfaces.
复制标题
DOI:
10.3762/bjnano.3.32
复制
发表时间:
2012
影响因子:
3.1
通讯作者:
Loppacher C
中科院分区:
文献类型:
--
作者:
Nony L;Bocquet F;Para F;Chérioux F;Duverger E;Palmino F;Luzet V;Loppacher C
We investigated the adsorption of 4-methoxy-4′-(3-sulfonatopropyl)stilbazolium (MSPS) on different ionic (001) crystal surfaces by means of noncontact atomic force microscopy. MSPS is a zwitterionic molecule with a strong electric dipole moment. When deposited onto the substrates at room temperature, MSPS diffuses to step edges and defect sites and forms disordered assemblies of molecules. Subsequent annealing induces two different processes: First, at high coverage, the molecules assemble into a well-organized quadratic lattice, which is perfectly aligned with the <110> directions of the substrate surface (i.e., rows of equal charges) and which produces a Moiré pattern due to coincidences with the substrate lattice constant. Second, at low coverage, we observe step edges decorated with MSPS molecules that run along the <110> direction. These polar steps most probably minimize the surface energy as they counterbalance the molecular dipole by presenting oppositely charged ions on the rearranged step edge.
登录
查看更多内容
影响因子:
3.1
作者:
Glatzel T;Zimmerli L;Kawai S;Meyer E;Fendt LA;Diederich F
通讯作者:
Diederich F
影响因子:
8.6
作者:
SERBUTOVIEZ, C;NICOUD, JF;ZYSS, J
通讯作者:
ZYSS, J
影响因子:
8.6
作者:
Burke, S. A.;Ji, W.;Grutter, P.
通讯作者:
Grutter, P.
影响因子:
17.1
作者:
Kittelmann, Markus;Rahe, Philipp;Kuehnle, Angelika
通讯作者:
Kuehnle, Angelika
影响因子:
3.7
作者:
Smilgies, Detlef-M.;Kintzel, Edward J., Jr.
通讯作者:
Kintzel, Edward J., Jr.