肽在半导体表面特异性粘附的实验与模拟
Specific Adhesion of Peptides on Semiconductor Surfaces in Experiment and Simulation
摘要：
我们报告的自组装，集群，和构象阶段的肽在无机半导体表面。肽覆盖的表面分数可以相差25倍，主要取决于表面和肽的极性。低粘附性诱导大且软的簇，其也具有与表面的高接触角。肽分子的直接表面粘附与形成提供总体减少的表面接触的分子聚集体竞争。模拟一个简单的混合模型产生一个伪相图与丰富的，温度和溶剂质量依赖的各种亚相，这是特定于所考虑的基板的疏水性和极性。
英文摘要：
We report on self-assembly, clustering, and conformational phases of peptides on inorganic semiconductor surfaces. The peptide-covered surface fraction can differ by a factor of 25, depending mainly on surface and peptide polarity. Low adhesion induces large and soft clusters, which also have high contact angles to the surface. Direct surface adhesion of a peptide molecule competes with forming molecular aggregates which offer an overall reduced surface contact. Simulating a simple hybrid model yields a pseudophase diagram with a rich, temperature and solvent-quality dependent variety of subphases which are specific to the hydrophobicity and polarity of the considered substrates.
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