1
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Rohullah M, Pradeep VV, Singh S, Chandrasekar R. Mechanically controlled multifaceted dynamic transformations in twisted organic crystal waveguides. Nat Commun 2024; 15:4040. [PMID: 38740755 DOI: 10.1038/s41467-024-47924-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 04/16/2024] [Indexed: 05/16/2024] Open
Abstract
This study introduces mechanically induced phenomena such as standing, leaning, stacking, and interlocking behaviors in naturally twisted optical waveguiding microcrystals on a substrate. The microscale twisted crystal self-assembled from 2,4-dibromo-6-(((2-bromo-5-fluorophenyl)imino)methyl)phenol is flexible and emits orange fluorescence. Mechanistic analysis reveals the strain generated by the intergrowing orientationally mismatched nanocrystallites is responsible for the twisted crystal growth. The crystal's mechanical flexibility in the perpendicular direction to (001) and (010) planes can be attributed to intermolecular Br···Br, F···Br, and π···π stacking interactions. Through a systematic process involving step-by-step bending and subsequent optical waveguiding experiments at each bent position, a linear relationship between optical loss and mechanical strain is established. Additionally, the vertical standing and leaning of these crystals at different angles on a flat surface and the vertical stacking of multiple crystals reveal the three-dimensional aspects of organic crystal waveguides, introducing light trajectories in a 3D space. Furthermore, the integration of two axially interlocked twisted crystals enables the coupling of polarization rotation along their long axis. These crystal dynamics expand the horizons of crystal behavior and have the potential to revolutionize various applications, rendering these crystals invaluable in the realm of crystal-related science and technology.
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Affiliation(s)
- Mehdi Rohullah
- Advanced Photonic Materials and Technology Laboratory, School of Chemistry and Centre for Nanotechnology, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad, 500 046, Telangana, India
| | - Vuppu Vinay Pradeep
- Advanced Photonic Materials and Technology Laboratory, School of Chemistry and Centre for Nanotechnology, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad, 500 046, Telangana, India
| | - Shruti Singh
- Advanced Photonic Materials and Technology Laboratory, School of Chemistry and Centre for Nanotechnology, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad, 500 046, Telangana, India
| | - Rajadurai Chandrasekar
- Advanced Photonic Materials and Technology Laboratory, School of Chemistry and Centre for Nanotechnology, University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad, 500 046, Telangana, India.
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2
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Meng J, Su Y, Zhu H, Cai T. Shape memory and self-healing in a molecular crystal with inverse temperature symmetry breaking. Chem Sci 2024; 15:5738-5745. [PMID: 38638237 PMCID: PMC11023024 DOI: 10.1039/d3sc06800e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/07/2024] [Indexed: 04/20/2024] Open
Abstract
Mechanically responsive molecular crystals have attracted increasing attention for their potential as actuators, sensors, and switches. However, their inherent structural rigidity usually makes them vulnerable to external stimuli, limiting their usage in many applications. Here, we present the mechanically compliant single crystals of penciclovir, a first-line antiviral drug, achieved through an unconventional ferroelastic transformation with inverse temperature symmetry breaking. These crystals display a diverse set of self-restorative behaviors well above room temperature (385 K), including ferroelasticity, superelasticity, and shape memory effects, suggesting their promising applications in high-temperature settings. Crystallographic analysis reveals that cooperative molecular displacement within the layered crystal structure is responsible for these unique properties. Most importantly, these ferroelastic crystals manifest a polymer-like self-healing behavior even after severe cracking induced by thermal or mechanical stresses. These findings suggest the potential for similar memory and restorative effects in other molecular crystals featuring layered structures and provide valuable insights for leveraging organic molecules in the development of high-performance, ultra-flexible molecular crystalline materials with promising applications.
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Affiliation(s)
- Jiantao Meng
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Yuan Su
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Hang Zhu
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University Nanjing 211198 People's Republic of China
| | - Ting Cai
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University Nanjing 211198 People's Republic of China
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University Nanjing 211198 People's Republic of China
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3
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Yang YH, Chen YS, Chuang WT, Yang JS. Bifurcated Polymorphic Transition and Thermochromic Fluorescence of a Molecular Crystal Involving Three-Dimensional Supramolecular Gear Rotation. J Am Chem Soc 2024; 146:8131-8141. [PMID: 38471139 PMCID: PMC10979455 DOI: 10.1021/jacs.3c12454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/25/2024] [Accepted: 02/21/2024] [Indexed: 03/14/2024]
Abstract
The ability of molecules to move and rearrange in the solid state accounts for the polymorphic transition and stimuli-responsive properties of molecular crystals. However, how the crystal structure determines the molecular motion ability remains poorly understood. Here, we report that a three-dimensional (3D) supramolecular gear network in the green-emissive polymorph 1G of a dialkylamino-substituted anthracene-pentiptycene π-system (1) enables an unusual bifurcated polymorphic transition into a yellow-emissive polymorph (1Y) and a new green-emissive polymorph (1G*) via 3D correlated supramolecular rotation. The 90° forward correlated rotation causes the molecular conformation between the octyl and the anthracene units to change from syn to anti, the ladder-like supramolecular columns to constrict, and the gear network to disengage. This cooperative molecular motion is marked by the gradual formation of an intermediate state (1I) across the entire crystal from 170 to 230 °C, which then undergoes bifurcated (forward or backward rotation) and irreversible transitions to form polymorphs 1Y and 1G* at 230-235 °C. Notably, 1G* is similar to 1G but lacks gear engagement, preventing its transformation into 1Y. Nevertheless, 1G can be restored by grinding 1Y or 1G* or fuming with dichloromethane (DCM) vapor. This work illustrates the correlation between the crystal structure and solid-state molecular motion behavior and demonstrates how a 3D molecular gear system efficiently transmits thermal energy to drive the polymorphic transition and induce fluorochromism through significant conformational and packing changes.
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Affiliation(s)
- Yun-Hsuan Yang
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Yu-Shan Chen
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Tsung Chuang
- National
Synchrotron Radiation Research Center, Hsinchu 30092, Taiwan
| | - Jye-Shane Yang
- Department
of Chemistry, National Taiwan University, Taipei 10617, Taiwan
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4
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Ju TY, Liu CD, Fan CC, Liang BD, Chai CY, Zhang W. Halogen Substitution Regulates High Temperature Dielectric Switch in Lead-Free Chiral Hybrid Perovskites. Chemistry 2024; 30:e202303415. [PMID: 37994293 DOI: 10.1002/chem.202303415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/21/2023] [Accepted: 11/22/2023] [Indexed: 11/24/2023]
Abstract
Hybrid metal halides (HMHs) based phase transition materials have received widespread attention due to their excellent performance and potential applications in energy harvesting, optoelectronics, ferroics, and actuators. Nevertheless, effectively regulating the properties of phase transitions is still a thorny problem. In this work, two chiral lead-free HMHs (R-3FP)2 SbCl5 (1; 3FP=3-fluoropyrrolidinium) and (R-3FP)2 SbBr5 (2) were synthesized. By replacing the halide ions in the inorganic skeleton, the phase transition temperature of 2 changes with an increase of about 20 K, compared with 1. Meanwhile, both compounds display reversible dielectric switching properties. Through crystal structure analysis and Hirshfeld surface analysis, their phase transitions are ascribed to the disorder of the cations and deformation of the inorganic chains.
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Affiliation(s)
- Tong-Yu Ju
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
| | - Cheng-Dong Liu
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
| | - Chang-Chun Fan
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
| | - Bei-Dou Liang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
| | - Chao-Yang Chai
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
| | - Wen Zhang
- Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu, 211189, P. R. China
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5
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Cheng Q, Hao A, Xing P. Selective chiral dimerization and folding driven by arene-perfluoroarene force. Chem Sci 2024; 15:618-628. [PMID: 38179513 PMCID: PMC10762935 DOI: 10.1039/d3sc05212e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 11/27/2023] [Indexed: 01/06/2024] Open
Abstract
Oligomerization and folding of chiral compounds afford diversified chiral molecular architectures with interesting chiroptical properties, but their rational and precise control remain poorly understood. In this work, we employed arene-perfluoroarene (AP) interaction to manipulate the folding and dimerization of alanine derivatives bearing pyrene and a perfluoronaphthalene derivative. Based on X-ray crystallography and nuclear magnetic resonance, the compound with a smaller tether and high skeleton rigidity self-assembled into double helical dimers by duplex hydrogen bonding and AP forces in a less polar solvent. Reversible disassociation occurred upon switching to a dipolar solvent or applying heating-cooling cycles. In comparison, the compound with increased skeleton flexibility folds into chiral molecular clamps in a less polar solvent, and is transformed into planar dimers upon switching to a polar solvent. The dynamic geometrical transformation between dimerization and folding was accompanied by chiroptical switching. Beyond the molecular and supramolecular level, we showed hierarchy control in the self-assembled nanoarchitectures and columnar and lamellar arrangements of their molecular packing. This work utilized AP forces to prepare and manipulate the chiral architectures at different hierarchical levels, enriching methodologies in precise chiral synthetic chemistry.
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Affiliation(s)
- Qiuhong Cheng
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Aiyou Hao
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
| | - Pengyao Xing
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University Jinan 250100 People's Republic of China
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6
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Mahmoud Halabi J, Al-Handawi MB, Ceballos R, Naumov P. Intersectional Effects of Crystal Features on the Actuation Performance of Dynamic Molecular Crystals. J Am Chem Soc 2023. [PMID: 37235774 DOI: 10.1021/jacs.3c02184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Despite being researched for decades, shape-shifting molecular crystals have yet to claim their spot as an actuating materials class among the primary functional materials. While the process for developing and commercializing materials can be lengthy, it inevitably starts with building an extensive knowledge base, which for molecular crystal actuators remains scattered and disjointed. Using machine learning for the first time, we identify inherent features and structure-function relationships that fundamentally impact the mechanical response of molecular crystal actuators. Our model can factor in different crystal properties in tandem and decipher their intersectional and combined effects on each actuation performance. This analysis is an open invitation to utilize interdisciplinary expertise in translating the current basic research on molecular crystal actuators into technology-based development that promotes large-scale experimentation and prototyping.
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Affiliation(s)
- Jad Mahmoud Halabi
- Smart Materials Lab, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
| | - Marieh B Al-Handawi
- Smart Materials Lab, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
| | | | - Panče Naumov
- Smart Materials Lab, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
- Center for Smart Engineering Materials, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, UAE
- Research Center for Environment and Materials, Macedonian Academy of Sciences and Arts, Bul. Krste Misirkov 2, Skopje MK-1000, Macedonia
- Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003, United States
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7
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Davies DW, Seo B, Park SK, Shiring SB, Chung H, Kafle P, Yuan D, Strzalka JW, Weber R, Zhu X, Savoie BM, Diao Y. Unraveling two distinct polymorph transition mechanisms in one n-type single crystal for dynamic electronics. Nat Commun 2023; 14:1304. [PMID: 36944642 PMCID: PMC10030468 DOI: 10.1038/s41467-023-36871-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 02/21/2023] [Indexed: 03/23/2023] Open
Abstract
Cooperativity is used by living systems to circumvent energetic and entropic barriers to yield highly efficient molecular processes. Cooperative structural transitions involve the concerted displacement of molecules in a crystalline material, as opposed to typical molecule-by-molecule nucleation and growth mechanisms which often break single crystallinity. Cooperative transitions have acquired much attention for low transition barriers, ultrafast kinetics, and structural reversibility. However, cooperative transitions are rare in molecular crystals and their origin is poorly understood. Crystals of 2-dimensional quinoidal terthiophene (2DQTT-o-B), a high-performance n-type organic semiconductor, demonstrate two distinct thermally activated phase transitions following these mechanisms. Here we show reorientation of the alkyl side chains triggers cooperative behavior, tilting the molecules like dominos. Whereas, nucleation and growth transition is coincident with increasing alkyl chain disorder and driven by forming a biradical state. We establish alkyl chain engineering as integral to rationally controlling these polymorphic behaviors for novel electronic applications.
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Affiliation(s)
- Daniel William Davies
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Bumjoon Seo
- Davidson School of Chemical Engineering, Purdue University, 480 W Stadium Ave, West Lafayette, IN, 47907, USA
- Department of Chemical and Biomolecular Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Republic of Korea
| | - Sang Kyu Park
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
- Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Joellabuk-do, 55324, South Korea
| | - Stephen B Shiring
- Davidson School of Chemical Engineering, Purdue University, 480 W Stadium Ave, West Lafayette, IN, 47907, USA
| | - Hyunjoong Chung
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Prapti Kafle
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA
| | - Dafei Yuan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
- College of Materials Science and Engineering, Hunan University, Changsha, 410082, China
| | - Joseph W Strzalka
- X-Ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Ralph Weber
- Bruker BioSpin Corp., 15 Fortune Drive, Billerica, MA, 01821, USA
| | - Xiaozhang Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Brett M Savoie
- Davidson School of Chemical Engineering, Purdue University, 480 W Stadium Ave, West Lafayette, IN, 47907, USA.
| | - Ying Diao
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, 600 South Mathews Avenue, Urbana, IL, 61801, USA.
- Beckman Institute for Advanced Science and Technology, 405 N. Mathews Ave. M/C 251, Urbana, IL, 61801, USA.
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8
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Near-room-temperature martensitic actuation profited from one-dimensional hybrid perovskite structure. Nat Commun 2022; 13:6599. [PMID: 36329048 PMCID: PMC9633747 DOI: 10.1038/s41467-022-34356-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
Martensitic transformation, usually accompanied by ferroelastic and thermoelastic behaviors, is an interesting and useful mechanical-related property upon external stimuli. For molecular crystals, however, martensitic systems to show reversible stimuli-actuation behaviors are still limited because of a lack of designability and frequent crystal collapse due to large stress releases during the transformations. Here, a one-dimensional hybrid perovskite semiconductor (NMEA)PbI3 (NMEA = N-methylethylammonium) was prepared by following a dimensionality reduction design principle. The crystal undergoes reversible ferroelastic and thermoelastic martensitic transformations, which are attributed to weak intermolecular interactions among the chains that easily trigger the interchain shearing movement. The actuation behavior occurring during the phase transition is very close to room temperature and demonstrated to behave as a mechanical actuator for switching. This work provides an effective approach to designing molecular actuators with promising applications in next-generation intelligence devices.
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9
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Takazawa K, Inoue JI, Matsushita Y. Repeatable Actuations of Organic Single Crystal Fibers Driven by Thermosalient-Phase-Transition-Induced Buckling. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2204500. [PMID: 36084217 DOI: 10.1002/smll.202204500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/23/2022] [Indexed: 06/15/2023]
Abstract
Thermosalient crystals are molecular solids that exhibit explosive motions, such as sudden breaks and jumps, due to temperature-induced structural phase transitions between two polymorphs. Therefore, the development of molecular actuators with superior speed and power by deriving mechanical work from explosive motion is a fascinating concept. However, thermosalient transitions often cause crystal disintegration, which hampers repeatable phase transitions between the polymorphs. Here, it is reported that single crystal nano/microfibers of 1, 2, 4, 5-tetrabromobenzene (TBB), whose bulk crystals exhibit thermosalient behavior at ≈40 °C, can repeatedly transform between the low and high temperature polymorphs without disintegration. The structural tolerance against phase transition is attributed to the high flexibility of the nano/microfibers. It is observed that a structure consisting of a TBB fiber with both ends pinned to the substrate repeatedly buckles and straightens when the temperature is varied between 30 and 40 °C. It is demonstrated that buckling can lead to large displacement actuation as compared to a simple length change of the fiber. Moreover, the force generated by the buckling fiber is estimated and it is found that it can generate a force large enough to flick an object ≈104 times heavier than the fiber itself into the air against gravity.
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Affiliation(s)
- Ken Takazawa
- Center for Green Research on Energy and Environmental Materials, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0003, Japan
| | - Jun-Ichi Inoue
- MANA, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0044, Japan
| | - Yoshitaka Matsushita
- Research Network and Facility Services Division, National Institute for Materials Science, Tsukuba, Ibaraki, 305-0047, Japan
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10
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Spectroscopic Tracking of Salicylideneaniline Photocolored Crystals: An Attempt to Quantify Polymorph-Dependent Features toward Precise Structure-Function Correlation Analysis. J Phys Chem A 2022; 126:4164-4175. [PMID: 35732010 DOI: 10.1021/acs.jpca.2c01689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three polymorphs of salicylideneaniline (SA) were prepared, and their photochromic behavior was examined using a recently developed single-crystal microscopic UV-vis spectroscopy approach. This system enabled us to acquire absorption data during the bleaching process as a function of temperature and visible light intensity. First, we demonstrated that, in contrast to the generally accepted assumption, the bleaching curves were notably influenced by the degree of photosaturation at the initial stage. By modifying our kinetic model to include the term representing the initial degree of photosaturation, we successfully obtained the kinetic parameters intrinsic to each crystal structure. Second, we further analyzed the kinetic parameters to show that the bleaching process was accelerated by visible light irradiation to a significantly higher degree than by thermal relaxation. The two bleaching-prompting effects were quantitatively compared between two photochromic polymorphs, α1 and α2; the long life of the photoproduct in α2 was attributed to efficient self-shielding from visible light irradiation enabled by its structural features. These results prompted us to reexamine the simple dualistic photochemical and thermal classification of photochromic systems and will provide a foundation for the precise structure-function analysis of crystalline materials, including SAs.
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11
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Exceptionally high work density of a ferroelectric dynamic organic crystal around room temperature. Nat Commun 2022; 13:2823. [PMID: 35595845 PMCID: PMC9123006 DOI: 10.1038/s41467-022-30541-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 05/05/2022] [Indexed: 11/15/2022] Open
Abstract
Dynamic organic crystals are rapidly gaining traction as a new class of smart materials for energy conversion, however, they are only capable of very small strokes (<12%) and most of them operate through energetically cost-prohibitive processes at high temperatures. We report on the exceptional performance of an organic actuating material with exceedingly large stroke that can reversibly convert energy into work around room temperature. When transitioning at 295–305 K on heating and at 265–275 K on cooling the ferroelectric crystals of guanidinium nitrate exert a linear stroke of 51%, the highest value observed with a reversible operation of an organic single crystal actuator. Their maximum force density is higher than electric cylinders, ceramic piezoactuators, and electrostatic actuators, and their work capacity is close to that of thermal actuators. This work demonstrates the hitherto untapped potential of ionic organic crystals for applications such as light-weight capacitors, dielectrics, ferroelectric tunnel junctions, and thermistors. Organic electronics requires dynamic materials, however, most of them have small strokes and operate at high temperatures. Here, the authors describe organic crystal that repeatedly expands and contracts nearly half its length around room temperature.
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12
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Ye Y, Hao H, Xie C. Photomechanical crystalline materials: new developments, property tuning and applications. CrystEngComm 2022. [DOI: 10.1039/d2ce00203e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This highlight gives an overview of the mechanism development, property tuning and application exploration of photomechanical crystalline materials.
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Affiliation(s)
- Yang Ye
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
| | - Hongxun Hao
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- National Collaborative Innovation Center of Chemistry Science and Engineering, Tianjin 300072, China
| | - Chuang Xie
- School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China
- National Collaborative Innovation Center of Chemistry Science and Engineering, Tianjin 300072, China
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13
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Karothu DP, Dushaq G, Ahmed E, Catalano L, Rasras M, Naumov P. Multifunctional Deformable Organic Semiconductor Single Crystals. Angew Chem Int Ed Engl 2021; 60:26151-26157. [PMID: 34570413 DOI: 10.1002/anie.202110676] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/10/2021] [Indexed: 11/05/2022]
Abstract
We report the first organic semiconductor crystal with a unique combination of properties that can be used as a multifunctional optoelectronic device. Mechanically flexible single crystals of 9,10-bis(phenylethynyl)anthracene (BPEA) can function as a phototransistor, photoswitch, and an optical waveguide. The material can exist as two structurally different solid phases, with single crystals of one of the phases being elastic at room temperature while those of the other are brittle and become plastic at higher temperature. The output and transfer characteristics of the devices were characterized by measuring the generation and temporal response of the switching of the photogenerated current. The current-voltage characteristics of both phases exhibit linearity and symmetry about the positive and negative voltages. The crystals transmit light in the telecommunications range with significantly low optical loss for an organic crystalline material.
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Affiliation(s)
- Durga Prasad Karothu
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Ghada Dushaq
- Division of Engineering, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Ejaz Ahmed
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Luca Catalano
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Mahmoud Rasras
- Division of Engineering, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE
| | - Panče Naumov
- Smart Materials Lab, New York University Abu Dhabi, PO Box 129188, Abu Dhabi, UAE.,Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, NY, 10003, USA
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14
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Karothu DP, Dushaq G, Ahmed E, Catalano L, Rasras M, Naumov P. Multifunctional Deformable Organic Semiconductor Single Crystals. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
| | - Ghada Dushaq
- Division of Engineering New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
| | - Ejaz Ahmed
- Smart Materials Lab New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
| | - Luca Catalano
- Smart Materials Lab New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
| | - Mahmoud Rasras
- Division of Engineering New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
| | - Panče Naumov
- Smart Materials Lab New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
- Molecular Design Institute Department of Chemistry New York University 100 Washington Square East New York NY 10003 USA
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15
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Strong π-stacking causes unusually large anisotropic thermal expansion and thermochromism. Proc Natl Acad Sci U S A 2021; 118:2106572118. [PMID: 34706935 DOI: 10.1073/pnas.2106572118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2021] [Indexed: 11/18/2022] Open
Abstract
π-stacking in ground-state dimers/trimers/tetramers of N-butoxyphenyl(naphthalene)diimide (BNDI) exceeds 50 kcal ⋅ mol-1 in strength, drastically surpassing that for the *3[pyrene]2 excimer (∼30 kcal ⋅ mol-1; formal bond order = 1) and similar to other weak-to-moderate classical covalent bonds. Cooperative π-stacking in triclinic (BNDI-T) and monoclinic (BNDI-M) polymorphs effects unusually large linear thermal expansion coefficients (α a , α b , α c , β) of (452, -16.8, -154, 273) × 10-6 ⋅ K-1 and (70.1, -44.7, 163, 177) × 10-6 ⋅ K-1, respectively. BNDI-T exhibits highly reversible thermochromism over a 300-K range, manifest by color changes from orange (ambient temperature) toward red (cryogenic temperatures) or yellow (375 K), with repeated thermal cycling sustained for over at least 2 y.
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Koshima H, Hasebe S, Hagiwara Y, Asahi T. Mechanically Responsive Organic Crystals by Light. Isr J Chem 2021. [DOI: 10.1002/ijch.202100093] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hideko Koshima
- Research Organization for Nano and Life Innovation Waseda University 513 Wasedatsurumaki-cho, Shinjuku-ku Tokyo 162-0041 Japan
| | - Shodai Hasebe
- Department of Advanced Science and Engineering Graduate School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Yuki Hagiwara
- Department of Advanced Science and Engineering Graduate School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
| | - Toru Asahi
- Research Organization for Nano and Life Innovation Waseda University 513 Wasedatsurumaki-cho, Shinjuku-ku Tokyo 162-0041 Japan
- Department of Advanced Science and Engineering Graduate School of Advanced Science and Engineering Waseda University 3-4-1 Okubo, Shinjuku-ku Tokyo 169-8555 Japan
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Affiliation(s)
| | - Panče Naumov
- Smart Materials Lab New York University Abu Dhabi PO Box 129188 Abu Dhabi UAE
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