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
DNA embedding Schiff base molecule assemblies: An efficient biological detection approach based on clustering-triggered emission
TL;DR: In this paper , a Schiff base small molecule, (E)-1-(4-(dimethylamino)-phenyl)iminomethyl-2-hydroxyl-naphthalene (DPIN) and single strand DNAs (ssDNAs) were constructed for clustering-triggered emission.
Journal ArticleDOI
Effect of dopants on the optical properties of benzil crystals
Florin Stanculescu,Marcela Socol,Oana Rasoga,Nicoleta Preda,Iulian Ionita,Gabriela Petre,C. Breazu,Anca Stanculescu +7 more
TL;DR: In this article , the effect of double and single-doping on the second-order optical nonlinear coefficient was analyzed by comparison with the secondorder ONL coefficient of pure Bz crystals.
Journal ArticleDOI
Hierarchical structures, surface morphology and mechanical elasticity of lamellar crystals dominated by halogen effects
Chuan-Xin Wei,Jianfeng Wang,Yanni Zhang,Xue-Hua Ding,Yanze Jiang,Qiang Zhao,Jinyi Lin,Jianfeng Zhao,Linghai Xie,Wei Huang +9 more
TL;DR: In this paper , the relationship between structural halogenation and molecular-level stacking, micro/nanoscale surface morphology, and macroscopic mechanical properties of Halo-pyrimidinyl carbazoles was investigated.
Journal ArticleDOI
Mechanical Flexibility in Halogen-Substituted Niacin and Isonicotinamide
TL;DR: In this article , the role of molecular packing and intermolecular interactions in determining mechanical properties of mechanically flexible organic crystals has been discussed and a sequence of plastically twisted and elastically bent crystals based on derivatives of nicotinic acid and isonicotinamide was obtained.
Journal ArticleDOI
Collimating the growth of twisted crystals of achiral compounds.
Idalys Lozano,Steue Whittaker,Yongfan Yang,Akash Tiwari,Hengyu Zhou,Shin Kim,Magaly Mendoza,Maryam Sow,Alexander G. Shtukenberg,Bart Kahr,Zhihua An,Stephanie S Lee +11 more
TL;DR: In this paper , it was shown how micron size channels fabricated from poly(dimethylsiloxane) (PDMS) serve to collimate the circular polycrystalline growth fronts of optically banded spherulites of twisted crystals of three compounds, coumarin, 2,5-bis(3-dodecyl-2-thienyl)-thiazolo[5,4-d]thiazole, and tetrathiafulvalene.
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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