19 research outputs found
Transverse vibration of a uniform Euler-Bernoulli beam under varying axial force using differential transformation method
Monoclonal antibodies against an intracellular phospholipase A2 from rat liver and their cross-reactivity with other phospholipases A2
Prediction of carbondioxide emissions from crude palm oil industry case study: Palm Oil Mill X in Kampar Regency of Riau Province
Intra-Arterial Infusion Chemotherapy With Angiotensin-II for Locally Advanced and Nonresectable Pancreatic Adenocarcinoma: Further Evaluation and Prognostic Implications
Melanocyte-specific expression of the human tyrosinase promoter: activation by the microphthalmia gene product and role of the initiator
Tuning intermolecular interaction in long-range-ordered submonolayer organic films
The future success of organic electronic devices strongly depends on the ability to tailor the properties of thin films and interfaces. This calls for well-ordered thin films. However, their properties are dominantly influenced by the formation of the first molecular layer representing a template for further growth. The development of the first layer-in turn-depends on the fine balance of molecule-substrate and molecule-molecule interaction. The latter is usually attractive owing to van der Waals forces and causes the formation of islands and small crystalline grains. Here, we report on organic adsorbates exhibiting a repulsive intermolecular interaction. With increasing coverage, Sn-phthalocyanine molecules continuously rearrange on Ag(111) in a series of ordered superstructures. They always fill the surface terraces homogeneously and maximize the domain size. Thicker films also exhibit extremely large, monocrystalline grains and potentially enable bulk-like properties for thin films. The intermolecular interaction can be tuned by cooling and becomes attractive below similar to 120 K