Exploiting the surface properties of graphene for polymorph selectivity
Loading...
Author (Corporation)
Publication date
21.07.2020
Type of student thesis
Course of study
Type
01A - Journal article
Editors
Editor (Corporation)
Supervisor
Parent work
ACS Nano
Special issue
DOI of the original publication
Link
Related research data
Series
Series number
Volume
14
Issue / Number
8
Pages / Duration
Patent number
Publisher / Publishing institution
American Chemical Society
Place of publication / Event location
Edition
Version
Programming language
Assignee
Practice partner / Client
Abstract
Producing crystals of the desired form (polymorph) is currently a challenge as nucleation is yet to be fully understood. Templated crystallization is an efficient approach to achieve polymorph selectivity; however, it is still unclear how to design the template to achieve selective crystallization of specific polymorphs. More insights into the nanoscale interactions happening during nucleation are needed. In this work, we investigate crystallization of glycine using graphene, with different surface chemistry, as a template. We show that graphene induces the preferential crystallization of the metastable α-polymorph compared to the unstable β-form at the contact region of an evaporating droplet. Computer modeling indicates the presence of a small amount of oxidized moieties on graphene to be responsible for the increased stabilization of the α-form. In conclusion, our work shows that graphene could become an attractive material for polymorph selectivity and screening by exploiting its tunable surface chemistry.
Keywords
Colloids, Crystallization, Crystals, Liquids, Two dimensional materials
Subject (DDC)
Event
Exhibition start date
Exhibition end date
Conference start date
Conference end date
Date of the last check
ISBN
ISSN
1936-0851
1936-086X
1936-086X
Language
English
Created during FHNW affiliation
No
Strategic action fields FHNW
Publication status
Published
Review
peer-reviewed
Open access category
Closed
License
Citation
Boyes, M., Alieva, A., Tong, J., Nagyte, V., Melle-Franco, M., Vetter, T., & Casiraghi, C. (2020). Exploiting the surface properties of graphene for polymorph selectivity. ACS Nano, 14(8). https://doi.org/10.1021/acsnano.0c04183