Formation of a chain-end-free surface on a self-assembled monolayer of a cyclic disulfide

采用溴王树脂，由10和20个碳原子组成的直线型烷烃二硫醇合成环状烷烃二硫化物。大周期的大小由SEC测量确定。由20个碳原子组成的烷二硫醇主要生成单体、二聚体和三聚体的大环，随着大环尺寸的增大，产率逐渐降低，而由10个碳原子组成的烷二硫醇只生成二聚体和更高的大环。

Cyclic alkanedisulfides were synthesized from linear alkanedithiols consisting of 10 and 20 carbon atoms using a bromo-Wang resin. The size of the macrocycles was determined by SEC measurements. While an alkanedithiol consisting of 20 carbon atoms mainly produced monomeric, dimeric, and trimeric macrocycles with a decreasing yield as the increasing size of the macrocycle, that of 10 carbon atoms resulted in the formation of only dimeric and higher macrocycles.