A Mechanophotonic Approach toward an Organic, Flexible Crystal Optical Interferometer

Advanced Optical Materials, Journal Year: 2022, Volume and Issue: 11(13)

Published: Aug. 23, 2022

Abstract Organic crystals are poised to be a potential alternative conventional silicon and its derivatives due their utilization as microscale photonic components like active passive waveguides, ring‐resonators, modulators, directional couplers, add‐on filters, interferometers (IMs), reconfigurable circuits. Among these, IMs important for flexible organic integrated Here, the design synthesis of extremely ( E )‐1‐(((5‐bromopyridin‐2‐yl)imino)methyl)naphthalen‐2‐ol (BPyIN) demonstrated. The interactions stabilizing crystal packing crystal‐substrate adhesion dictate elasticity pseudo‐plasticity, respectively. BPyIN disclose bending geometry‐dependent optical modes in fluorescence spectra. This understanding is extended fabricating fiber loop mirror (FLM)‐like geometry using single crystal. Mechanophotonics approach facilitates integration FLM‐like with doubly bent waveguide construct first‐of‐its‐kind IM. light propagating path‐length‐dependent interference within IM established. These proof‐of‐principle experiments illustrate usefulness mechanophotonics fabricate miniature devices beyond traditional fabrication approach.

Language: Английский

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Micromechanically‐Powered Rolling Locomotion of a Twisted‐Crystal Optical‐Waveguide Cavity as a Mobile Light Polarization Rotor

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(21)

Published: March 12, 2022

We demonstrate mechanically-powered rolling locomotion of a twisted-microcrystal optical-waveguide cavity on the substrate, rotating output signal's linear-polarization. Self-assembly (E)-2-bromo-6-(((4-methoxyphenyl)imino)methyl)-4-nitrophenol produces naturally twisted microcrystals. The strain between several intergrowing, orientationally mismatched nanocrystalline fibres dictates pitch lengths crystals. crystals are flexible, perpendicular to (001) and (010) planes due π⋅⋅⋅π stacking, C-H⋅⋅⋅Br, N-H⋅⋅⋅O C-H⋅⋅⋅O interactions. in their straight bent geometries guide fluorescence along body axes display optical modes. Depending upon degree mechanical locomotion, crystal-waveguide correspondingly rotates signal polarization. presented twisted-crystal with combination photonic attributes unfolds new dimension mechanophotonics.

Language: Английский

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Molecular and Supramolecular Designs of Organic/Polymeric Micro-photoemitters for Advanced Optical and Laser Applications

Accounts of Chemical Research, Journal Year: 2023, Volume and Issue: 56(12), P. 1469 - 1481

Published: May 23, 2023

ConspectusFor optical and electronic applications of supramolecular assemblies, control the hierarchical structure from nano- to micro- millimeter scale is crucial. Supramolecular chemistry controls intermolecular interactions build up molecular components with sizes ranging several hundreds nanometers using bottom-up self-assembly process. However, extending approach a tens micrometers construct objects precisely controlled size, morphology, orientation challenging. Especially for microphotonics such as resonators lasers, integrated devices, sensors, precise design micrometer-scale object required. In this Account, we review recent progress on microstructures π-conjugated organic molecules polymers, which work micro-photoemitters are suitable applications.After introduction importance structures assembly, methodology assembling supramolecules form spheres polygons morphology orientations. The resultant act anisotropic emitters circularly polarized luminescence. We report that synchronous crystallization chiral cyclophanes forms concave hexagonal pyramidal microcrystals homogeneous orientation, clearly paves way skeletal under kinetic control. Furthermore, show microcavity functions self-assembled micro-objects. polymer microspheres whispering gallery mode (WGM) resonators, where photoluminescence exhibits sharp periodic emission lines. spherical long-distance photon energy transporters, convertors, full-color microlasers. Fabrication microarrays photoswitchable WGM microresonators by surface technique realizes memory physically unclonable fingerprints. All-optical logic operations demonstrated arranging synthetic natural fibers, gate light propagation via cavity-mediated transfer cascade. Meanwhile, line appropriate utilization sensors monitoring shift splitting. resonant peaks sensitively respond humidity change, absorption volatile compounds, microairflow, decomposition utilizing structurally flexible microporous nonvolatile liquid droplets, biopolymers media resonators. further rods rhombic plates, laser light-harvesting function. Our developments, organic/polymeric microstructures, bridge between nanometer-scale bulk materials pave toward micro-optics applications.

Language: Английский

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Self-Assembled π-Conjugated Organic/Polymeric Microresonators and Microlasers

Bulletin of the Chemical Society of Japan, Journal Year: 2023, Volume and Issue: 96(7), P. 702 - 710

Published: June 15, 2023

Optical microresonators are minute dielectric objects that utilized as essential components in micrometer-scale light and laser sources, optical integrated circuits, micro-displays, chemo- biosensors, so forth. Particularly, made from organic polymeric materials find unique applications owing to structural flexibility, color tunability, functionality with a simple fabrication process, low cost energy consumption. In this Account, we highlight our recent progress on organic/polymeric through precisely controlled self-assembly. The microstructures display novel functions such circularly polarized luminescence emission, lasing, harvest, gate operations, memories authentications, sensing for environmental changes mechanical forces. Our methodology the precise design control of will bridge between nanometer-scale supramolecular chemistry bulk pave way toward flexible applications. Precise by self-assembly π-conjugated molecules polymers offers sophisticated resonators lasers, emitters, logic memories, harvesting, which sensors

Language: Английский

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Exploration of elastic moduli of molecular crystals via database screening by pretrained neural network potential

CrystEngComm, Journal Year: 2024, Volume and Issue: 26(5), P. 631 - 638

Published: Jan. 1, 2024

Elastic moduli of molecular crystals can be predicted using pretrained neural network potential, showing sufficient agreement with experimental data.

Language: Английский

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Lasing in Low-Dimensional Crystals of a Fumaronitrile-Based Luminogen

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(14), P. 3968 - 3974

Published: April 3, 2024

Low-dimensional structures are ideal for organic laser media because of their efficient waveguide, photon confinement, and stimulated emission. Control the structure alignment luminescent molecules is very important realizing media. Here, we fabricate low-dimensional crystals bis(biphenyl)fumaronitrile (BPFN), which an aggregation-induced emission luminogen. The BPFN molecule contains fumaronitrile, displays solid-state luminescence, biphenyl, forms through dipole–dipole interactions. Solvent diffusion yielded two-dimensional platelet with strong CH−π high photoluminescence quantum efficiency 0.46 uniaxially aligned molecular π-electronic transition dipole moment in resulted optically pumped lasing even when using optical excitation source a long pulse duration (∼5 ns). One-dimensional obtained via epitaxial growth on cleaved surface KBr single crystal also displayed behavior.

Language: Английский

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Organic Crystalline Optical Waveguides That Remain Elastic from −196 to ≈200 °C

Advanced Optical Materials, Journal Year: 2022, Volume and Issue: 11(13)

Published: May 27, 2022

Abstract Organic crystals that are capable to deform (reversibly or irreversibly) similar polymer materials have been widely reported over the past ten years. However, most of organic can only be elastically bent within a narrow temperature range, and reports on their thermal behavior would encourage applications these energy‐transducing elements in extreme conditions not readily available. This work designs linear flat π‐conjugated molecule with double intramolecular hydrogen bonds prevent thermally induced conformational distortions. The assembles as rigid building block into centimeter‐sized wide range spanning close 400 ° C, from − 196 ≈ 200 C. emission wavelength is also dependent, continually tuned 547 577 nm upon heating 20 inspires design lightweight, organic, elastic optical waveguide where output energy controlled by operating temperature. crystal flexibility expands for application waveguides.

Language: Английский

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Elastic organic crystals for flexible lasing media synthesized by crystal engineering

Dyes and Pigments, Journal Year: 2025, Volume and Issue: 235, P. 112639 - 112639

Published: Jan. 9, 2025

Language: Английский

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Exploring elastic properties of molecular crystals with universal machine learning interatomic potentials

Materials & Design, Journal Year: 2025, Volume and Issue: unknown, P. 114047 - 114047

Published: May 1, 2025

Language: Английский

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Molecular Logic Operations Using Multistimuli Responsive, Mechanically Tunable Elastic Organic Single Crystals

ACS Materials Letters, Journal Year: 2022, Volume and Issue: 4(12), P. 2499 - 2505

Published: Nov. 8, 2022

Despite the recent advancements in deciphering underpinning rules of flexibility organic single crystals and their superior device performance due to nearly defect-free packing, flexible are scarcely used electronic devices. Single that can produce multiple readouts response different external stimuli could be immensely useful for molecular logic operations. Here, we report modulation mechanical fluorescence a pyrene-functionalized naphthalidenimine chemical stimuli. Crystallographic investigations revealed subtle changes weak intermolecular interactions play critical role defining these crystals. Furthermore, multistimuli responsive luminescence properties were utilized building multiple-input, multiple-output gate.

Language: Английский

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