Effects of Additives on Crystallization in Thin Organic Films

Thomas R. Fielitz, Christopher M. Phenicie, Russell J. Holmes

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Controlling the shape and growth of crystals in molecular organic solids has ramifications impacting diverse fields, but remains challenging to fully exploit. Here, crystal shapes in organic thin films are manipulated from aspect ratios of 1 to over 50, with corresponding growth rates decreased by an order of magnitude simply by mixing a structurally dissimilar minority species into the film. These effects are mapped with composition and temperature in mixtures of two model small-molecular-weight organic compounds, revealing a continuous variation in crystal shape and growth rate. Other combinations of molecules are discussed, showing additive shape selection in multicomponent mixtures and enabling customization of crystal shape.

Original languageEnglish (US)
Pages (from-to)4522-4526
Number of pages5
JournalCrystal Growth and Design
Volume17
Issue number9
DOIs
StatePublished - Sep 6 2017

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation (NSF) Solid State and Materials Chemistry (SSMC) Program under DMR-1307066.

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