TY - JOUR
T1 - Tuning Organic Semiconductor Alignment and Aggregation via Nanoconfinement
AU - Haruk, Alexander M.
AU - Leng, Collen Z.
AU - Fernando, Pravini S.
AU - Smilgies, Detlef M.
AU - Loo, Yueh Lin
AU - Mativetsky, Jeffrey M.
N1 - Funding Information:
This work is supported by the National Science Foundation (CAREER award DMR-1555028) and is based upon research conducted at the Cornell High Energy Synchrotron Source (CHESS), which is supported by the National Science Foundation under award DMR-1332208. This work also made use of the Analytical and Diagnostics Laboratory at Binghamton University's Small Scale Systems Integration and Packaging Center. Y.L.L. acknowledges support from the Camille & Henry Dreyfus Foundation and C.Z.L. acknowledges the Princeton Environmental Institute Internship Program.
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/10/15
Y1 - 2020/10/15
N2 - The nanoconfinement of organic semiconductors in nanoporous media presents a means of manipulating molecular assembly and optoelectronic properties. This work introduces a solution-infiltration process with slow solvent evaporation for filling nanoporous anodic aluminum oxide templates with crystalline organic semiconductors. This approach is used to systematically study the dependence of crystal growth on nanopore size for four organic semiconductors, including planar small molecules, a fullerene, and a polymer. The planar molecules exhibit preferential π-πstacking along the pore axis in addition to a second co-existing growth orientation, indicating competition between fast-growth directions as nuclei attempt to reach a critical cluster size. Size-dependent effects were seen in the crystallinity, crystal orientation, and molecular aggregation of these compounds.
AB - The nanoconfinement of organic semiconductors in nanoporous media presents a means of manipulating molecular assembly and optoelectronic properties. This work introduces a solution-infiltration process with slow solvent evaporation for filling nanoporous anodic aluminum oxide templates with crystalline organic semiconductors. This approach is used to systematically study the dependence of crystal growth on nanopore size for four organic semiconductors, including planar small molecules, a fullerene, and a polymer. The planar molecules exhibit preferential π-πstacking along the pore axis in addition to a second co-existing growth orientation, indicating competition between fast-growth directions as nuclei attempt to reach a critical cluster size. Size-dependent effects were seen in the crystallinity, crystal orientation, and molecular aggregation of these compounds.
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U2 - 10.1021/acs.jpcc.0c06270
DO - 10.1021/acs.jpcc.0c06270
M3 - Article
AN - SCOPUS:85096532619
SN - 1932-7447
VL - 124
SP - 22799
EP - 22807
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 41
ER -