Control over size, shape, and photonics of self-assembled organic nanocrystals

Chen Shahar; Yaron Tidhar; Yunmin Jung; Haim Weissman; Sidney R Cohen; Ronit Bitton; Iddo Pinkas; Gilad Haran; Boris Rybtchinski

doi:10.3762/bjoc.17.5

Control over size, shape, and photonics of self-assembled organic nanocrystals

Chen Shahar, Yaron Tidhar, Yunmin Jung, Haim Weissman, Sidney R Cohen, Ronit Bitton, Iddo Pinkas, Gilad Haran, Boris Rybtchinski

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The facile fabrication of free-floating organic nanocrystals (ONCs) was achieved via the kinetically controlled self-assembly ofsimple perylene diimide building blocks in aqueous medium. The ONCs have a thin rectangular shape, with an aspect ratio that is controlled by the content of the organic co-solvent (THF). The nanocrystals were characterized in solution by cryogenic transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering. The ONCs retain their structure upon drying, as was evidenced by TEM and atom force microscopy. Photophysical studies, including femtosecond transient absorption spectroscopy, revealed a distinct influence of the ONC morphology on their photonic properties (excitation energy transfer was observed only in the high-aspect ONCs). Convenient control over the structure and function of organic nanocrystals can enhance their utility in new and developed technologies.

Original language	English
Pages (from-to)	42-51
Number of pages	10
Journal	Beilstein Journal of Organic Chemistry
Volume	17
Issue number	1
DOIs	https://doi.org/10.3762/bjoc.17.5
State	Published - 6 Jan 2021

Keywords

aromatic amphiphiles
exciton diffusion
organic nanocrystals
perylene diimides
self-assembly

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title = "Control over size, shape, and photonics of self-assembled organic nanocrystals",

abstract = "The facile fabrication of free-floating organic nanocrystals (ONCs) was achieved via the kinetically controlled self-assembly ofsimple perylene diimide building blocks in aqueous medium. The ONCs have a thin rectangular shape, with an aspect ratio that is controlled by the content of the organic co-solvent (THF). The nanocrystals were characterized in solution by cryogenic transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering. The ONCs retain their structure upon drying, as was evidenced by TEM and atom force microscopy. Photophysical studies, including femtosecond transient absorption spectroscopy, revealed a distinct influence of the ONC morphology on their photonic properties (excitation energy transfer was observed only in the high-aspect ONCs). Convenient control over the structure and function of organic nanocrystals can enhance their utility in new and developed technologies.",

keywords = "aromatic amphiphiles, exciton diffusion, organic nanocrystals, perylene diimides, self-assembly",

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note = "Publisher Copyright: {\textcopyright} 2021 Lima et al.; licensee Beilstein-Institut. License and terms: see end of document.",

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doi = "10.3762/bjoc.17.5",

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T1 - Control over size, shape, and photonics of self-assembled organic nanocrystals

AU - Shahar, Chen

AU - Tidhar, Yaron

AU - Jung, Yunmin

AU - Weissman, Haim

AU - Cohen, Sidney R

AU - Bitton, Ronit

AU - Pinkas, Iddo

AU - Haran, Gilad

AU - Rybtchinski, Boris

PY - 2021/1/6

Y1 - 2021/1/6

N2 - The facile fabrication of free-floating organic nanocrystals (ONCs) was achieved via the kinetically controlled self-assembly ofsimple perylene diimide building blocks in aqueous medium. The ONCs have a thin rectangular shape, with an aspect ratio that is controlled by the content of the organic co-solvent (THF). The nanocrystals were characterized in solution by cryogenic transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering. The ONCs retain their structure upon drying, as was evidenced by TEM and atom force microscopy. Photophysical studies, including femtosecond transient absorption spectroscopy, revealed a distinct influence of the ONC morphology on their photonic properties (excitation energy transfer was observed only in the high-aspect ONCs). Convenient control over the structure and function of organic nanocrystals can enhance their utility in new and developed technologies.

AB - The facile fabrication of free-floating organic nanocrystals (ONCs) was achieved via the kinetically controlled self-assembly ofsimple perylene diimide building blocks in aqueous medium. The ONCs have a thin rectangular shape, with an aspect ratio that is controlled by the content of the organic co-solvent (THF). The nanocrystals were characterized in solution by cryogenic transmission electron microscopy (cryo-TEM) and small-angle X-ray scattering. The ONCs retain their structure upon drying, as was evidenced by TEM and atom force microscopy. Photophysical studies, including femtosecond transient absorption spectroscopy, revealed a distinct influence of the ONC morphology on their photonic properties (excitation energy transfer was observed only in the high-aspect ONCs). Convenient control over the structure and function of organic nanocrystals can enhance their utility in new and developed technologies.

KW - aromatic amphiphiles

KW - exciton diffusion

KW - organic nanocrystals

KW - perylene diimides

KW - self-assembly

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U2 - 10.3762/bjoc.17.5

DO - 10.3762/bjoc.17.5

M3 - Article

SN - 1860-5397

VL - 17

SP - 42

EP - 51

JO - Beilstein Journal of Organic Chemistry

JF - Beilstein Journal of Organic Chemistry

IS - 1

ER -

Control over size, shape, and photonics of self-assembled organic nanocrystals

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Keywords

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