Journal ArticleDOI
Highly Elastic Organic Crystals for Flexible Optical Waveguides.
TLDR
An elastic crystal of a Schiff base, (E)-1-(4-(dimethylamino)phenyl)iminomethyl-2-hydroxyl-naphthalene, which is highly bendable under external stress and able to regain immediately its original straight shape when the stress is released can serve as a low-loss optical waveguide even at the highly bent state.Abstract:
The study of elastic organic single crystals (EOSCs) has emerged as a cutting-edge research of crystal engineering. Although a few EOSCs have been reported recently, those suitable for optical/optoelectronic applications have not been realized. Here, we report an elastic crystal of a Schiff base, (E)-1-(4-(dimethylamino)phenyl)iminomethyl-2-hydroxyl-naphthalene. The crystal is highly bendable under external stress and able to regain immediately its original straight shape when the stress is released. It displays bright orange-red emission with a high fluorescence quantum yield of 0.43. Intriguingly, it can serve as a low-loss optical waveguide even at the highly bent state. Our result highlights the feature and utility of "elasticity" of organic crystals.read more
Citations
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Journal ArticleDOI
Red-Emissive Organic Crystals of a Single-Benzene Molecule: Elastically Bendable and Flexible Optical Waveguide.
TL;DR: A flexible optical waveguide has been realized in the crystal of polymorph A with a bent shape, highlighting its potential application in flexible devices.
Journal ArticleDOI
Is a Bent Crystal Still a Single Crystal
TL;DR: Here, it is discussed how the effects of the elastic and plastic deformation of molecular crystals on the diffraction signature give primary evidence of their degree of crystallinity.
Journal ArticleDOI
A Flexible Organic Single Crystal with Plastic-Twisting and Elastic-Bending Capabilities and Polarization-Rotation Function
TL;DR: Through utilizing different modes of external forces for influencing molecular packing of different crystallographic directions, plastic helical twisting and elastic bending can both be achieved for a crystal and they can even be realized simultaneously.
Journal ArticleDOI
Optical Waveguiding Organic Single Crystals Exhibiting Physical and Chemical Bending Features
TL;DR: An organic single crystal of ( Z )-4-(1-cyano-2-(4-(dimethylamino)phenyl)vinyl)benzonitrile) could bend under external stress or in the hydrochloric acid atmosphere, which indicates that multiple crystal bending modes might be achieved in the same single organic crystal by simultaneously optimizing the structure at both molecular and supramolecular levels.
Journal ArticleDOI
Remarkably Distinct Mechanical Flexibility in Three Structurally Similar Semiconducting Organic Crystals Studied by Nanoindentation and Molecular Dynamics
Ramesh Devarapalli,Sourabh B. Kadambi,Chun-Teh Chen,Gamidi Rama Krishna,Bal Raju Kammari,Markus J. Buehler,Upadrasta Ramamurty,Upadrasta Ramamurty,C. Malla Reddy +8 more
TL;DR: In this paper, the macroscopic mechanical responses of three naphthalene diimide derivatives, 1Me, 1Et, and 1nPr, were studied by using nanoindentation and molecular dynamics simulations.
References
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Journal ArticleDOI
Mechanically Responsive Molecular Crystals
TL;DR: This paper presents a meta-analyses of the chiral stationary phase of the H2O/O2 mixture and shows clear trends in the direction of increasing chiral insensitivity to Naumov’s law.
Journal ArticleDOI
Elastic and bendable caffeine cocrystals: implications for the design of flexible organic materials.
Soumyajit Ghosh,C. Malla Reddy +1 more
TL;DR: A remarkably flexible, elastically bendable cocrystal solvate 1 is reported, formed from caffeine, 4-chloro-3-nitrobenzoic acid, and methanol in a 1:1:< 1 ratio (Figure 1).
Journal ArticleDOI
Spatially resolved analysis of short-range structure perturbations in a plastically bent molecular crystal
Manas K. Panda,Soumyajit Ghosh,Nobuhiro Yasuda,Taro Moriwaki,Goutam Dev Mukherjee,C. Malla Reddy,Panče Naumov +6 more
TL;DR: The morphostructural consequences of plastic deformation in crystals of hexachlorobenzene that can be bent mechanically at multiple locations to 360° with retention of macroscopic integrity are described.
Journal ArticleDOI
Mechanically Flexible Organic Crystals Achieved by Introducing Weak Interactions in Structure: Supramolecular Shape Synthons
TL;DR: The study, which reports the preparation of a series of exotic plastic crystals by design for the first time, demonstrates the potential of soft interactions for tuning the mechanical behavior of ordered molecular materials, including those from π-conjugated systems.
Journal ArticleDOI
Designing Elastic Organic Crystals: Highly Flexible Polyhalogenated N‐Benzylideneanilines
Soumyajit Ghosh,Manish Kumar Mishra,Sourabh B. Kadambi,Upadrasta Ramamurty,Upadrasta Ramamurty,Gautam R. Desiraju +5 more
TL;DR: The intermolecular interactions and structural features in crystals of seven halogenated N-benzylideneanilines (Schiff bases), all of which exhibit remarkable flexibility, were examined to identify the common packing features that are the raison d'être for the observed elasticity.
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