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Thermal Healing of a Mixed-Thiol Monolayer at the Nanoscale
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2018-05-17 00:00:00 , DOI: 10.1021/acs.jpcc.8b03012 Zhengqing Zhang , Manho Lim , Yoonho Ahn 1 , Joonkyung Jang
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2018-05-17 00:00:00 , DOI: 10.1021/acs.jpcc.8b03012 Zhengqing Zhang , Manho Lim , Yoonho Ahn 1 , Joonkyung Jang
Affiliation
Using molecular dynamics simulation, we study the thermal healing of a mixed-thiol monolayer grown by contact printing. By simulating the monolayers with various compositions of octadecanethiol and decanethiol molecules, we show that a mixed-thiol monolayer grown by contact printing contains a significant portion of unbound molecules which fail to bind their sulfur atoms to the underlying gold surface. A subsequent thermal annealing (300–370 K) however removes the unbound thiol molecules and gives an ordered and compact monolayer. We uncover the molecular pathways behind the removal of the unbound molecules during thermal annealing.
中文翻译:
纳米级混合巯基单分子膜的热修复
使用分子动力学模拟,我们研究了通过接触印刷生长的混合硫醇单层的热修复。通过模拟十八烷硫醇和癸烷硫醇分子的各种组成的单分子层,我们表明通过接触印刷法生长的混合硫醇单分子层包含很大一部分未结合的分子,这些分子无法将其硫原子结合到下面的金表面。然而,随后的热退火(300–370 K)去除了未结合的硫醇分子,并给出了有序且致密的单分子层。我们揭示了在热退火过程中去除未结合分子背后的分子途径。
更新日期:2018-05-17
中文翻译:
纳米级混合巯基单分子膜的热修复
使用分子动力学模拟,我们研究了通过接触印刷生长的混合硫醇单层的热修复。通过模拟十八烷硫醇和癸烷硫醇分子的各种组成的单分子层,我们表明通过接触印刷法生长的混合硫醇单分子层包含很大一部分未结合的分子,这些分子无法将其硫原子结合到下面的金表面。然而,随后的热退火(300–370 K)去除了未结合的硫醇分子,并给出了有序且致密的单分子层。我们揭示了在热退火过程中去除未结合分子背后的分子途径。