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Polymorphism of dioctyl-terthiophene within thin films: The role of the first monolayer.

ABSTRACT: The origins of specific polymorphic phases within thin films are still not well understood. The polymorphism of the molecule dioctyl-terthiophene is investigated during the presence of a silicon-oxide surface during the crystallisation process. It is found that a monolayer of molecules forms two-dimensional crystals on the surface. In the case of thicker films crystalline islands are formed, a comparison of the three polymorphic phases observed within thin films and the thermodynamically more stable single crystal phases reveals distinct differences which can be related to an adaption of the molecular packing with the flat surface of the substrate.

SUBMITTER: Lercher C

PROVIDER: S-EPMC6472291 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Polymorphism of dioctyl-terthiophene within thin films: The role of the first monolayer.

Lercher Christoph C Röthel Christian C Roscioni Otello Maria OM Geerts Yves Henri YH Shen Quan Q Teichert Christian C Fischer Roland R Leising Günther G Sferrazza Michele M Gbabode Gabin G Resel Roland R

Chemical physics letters 20150601

The origins of specific polymorphic phases within thin films are still not well understood. The polymorphism of the molecule dioctyl-terthiophene is investigated during the presence of a silicon-oxide surface during the crystallisation process. It is found that a monolayer of molecules forms two-dimensional crystals on the surface. In the case of thicker films crystalline islands are formed, a comparison of the three polymorphic phases observed within thin films and the thermodynamically more st ...[more]

PMID: 31007269

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