Ultra‐Sensitive, Selective and Repeatable Fluorescence Sensor for Methanol Based on a Highly Emissive 0D Hybrid Lead‐Free Perovskite

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(35)

Published: June 7, 2022

A convenient and rapid detection method for methanol in ethanol remains a major challenge due to their indistinguishable physical properties. Herein, novel fluorescence probe based on perovskite was successfully designed overcome this bottleneck. We report new zero-dimensional (0D) hybrid of [MP]2 Inx Sb1-x Cl7 ⋅ 6 H2 O (MP=2-methylpiperazine) displaying an unusual green light emission with near-unity photoluminescence quantum yield. Remarkably, 0D exhibits reversible methanol-response luminescence switching between yellow color but fail any other organic vapors. Even blended alcohol solutions, the luminescent excellent sensing performance multiple superiorities response time (30 s) ultra-low limit (40 ppm), etc. Therefore, can be utilized as perfect detect traces from ultrahigh sensitivity, selectivity repeatability. To best our knowledge, work represents first wide potential environmental monitoring detection,

Language: Английский

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Chiral Rashba Ferroelectrics for Circularly Polarized Light Detection

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(51)

Published: Sept. 21, 2022

Direct detection of circularly polarized light (CPL) is a challenging task due to limited materials and ambiguous structure-property relationships that lead low distinguishability the helicities. Perovskite ferroelectric semiconductors incorporating chirality provide new opportunities in dealing with this issue. Herein, pair 2D chiral perovskite ferroelectrics reported, which have enhanced CPL performance interplays among lattice, photon, charge, spin, orbit. The chirality-transfer-induced chiral&polar phase enhances asymmetric nature photoactive sublattice achieves switchable self-powered via bulk photovoltaic effect. single-crystal-based device exhibits CPL-sensitive under 430 nm an factor 0.20 for left- right-CPL differentiation, about two times pure counterparts. ascribed Rashba-Dresselhaus effect originates from inversion asymmetry strong spin-orbit coupling, shown large Rashba coefficient, demonstrated by density functional theory calculation excited photoluminescence measurement. These results perspectives on direct ferroelectrics-based chiroptics spintronics.

Language: Английский

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Unraveling chirality transfer mechanism by structural isomer-derived hydrogen bonding interaction in 2D chiral perovskite

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 30, 2023

In principle, the induced chirality of hybrid perovskites results from symmetry-breaking within inorganic frameworks. However, detailed mechanism behind transfer remains unknown due to lack systematic studies. Here, using structural isomer with different functional group location, we deduce effect hydrogen-bonding interaction between two building blocks on degree in The asymmetric was clearly demonstrated by thorough experimental analysis. Systematic studies crystallography parameters confirm that interactions derived location play a key role phenomena and resulting spin-related properties chiral perovskites. methodology control asymmetry through small difference structure cation can provide rational design paradigm for unprecedented perovskite.

Language: Английский

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Bright circularly polarized photoluminescence in chiral layered hybrid lead-halide perovskites

Science Advances, Journal Year: 2023, Volume and Issue: 9(35)

Published: Sept. 1, 2023

Hybrid perovskite semiconductor materials are predicted to lock chirality into place and encode asymmetry their electronic states, while softness of crystal lattice accommodates strain maintain high quality with low defect densities, necessary for luminescence yields. We report photoluminescence quantum efficiencies as 39% degrees circularly polarized up 52%, at room temperature, in the chiral layered hybrid lead-halide perovskites (R/S/Rac)-3BrMBA 2 PbI 4 [3BrMBA = 1-(3-bromphenyl)-ethylamine]. Using transient chiroptical spectroscopy, we explain excellent yields from suppression nonradiative loss channels rates radiative recombination. further find that photoexcitations show polarization lifetimes exceed time scales decays, which rationalize luminescence. Our findings pave way toward high-performance solution-processed photonic systems applications chiral-spintronic logic temperature.

Language: Английский

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Spintronic Phenomena and Applications in Hybrid Organic–Inorganic Perovskites

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(27)

Published: March 1, 2024

Abstract The spin degree of freedom in hybrid organic–inorganic perovskites (HOIPs) has become a rapidly growing research topic both HOIPs and spintronics fields due to its fundamental scientific significance tight relevance with optoelectronics. flourishing achievements HOIP call for timely review summarize the key progress guide future developments. In this review, classical spintronic phenomena based on spin‐orbit coupling (SOC) are discussed, especially Rashba splitting related applications such as spin‐charge conversion. Owing unique chirality‐spin coupling, chiral particularly focused on, including chirality‐induced selectivity (CISS). Based complex band structure carrier/exciton, dynamics is also widely investigated constitutes an indispensable part spintronics. Aside from three main threads, other magneto‐optical device exploration involved promising opportunities. Despite continuous breakthroughs spintronics, more efforts required expand material systems, explore new physics, optimize configurations enhanced performance high integration. A deep understanding behaviors will create platform beyond conventional optoelectronic photovoltaic applications.

Language: Английский

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Circularly Polarized Radioluminescence from Chiral Perovskite Scintillators for Improved X‐ray Imaging

Angewandte Chemie International Edition, Journal Year: 2022, Volume and Issue: 61(37)

Published: July 21, 2022

Abstract Scintillators display radioluminescent properties when irradiated by high‐energy photons and therefore play an essential role in radiation detection. The current inventory of scintillators is overwhelmingly represented achiral structures, where the radioluminescence propagates isotropically after generation. Herein, we demonstrate that chiral perovskites (R‐3AP)PbBr 3 Cl⋅H 2 O ( R‐3APP ) (S‐3AP)PbBr S‐3APP emerge as a new type scintillator displaying distinct property circularly polarized CPRL ). A high quantum yield 27.6 %, luminescence dissymmetric factors g lum 4×10 −2 , X‐ray absorption coefficients were observed for these compounds. As proof concept, fabricated pair assembling crystals, which provides strategy to attenuate optical crosstalk between precisely controlling propagation improves imaging quality at boundary region.

Language: Английский

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Chiral Two-Dimensional Hybrid Organic–Inorganic Perovskites for Piezoelectric Ultrasound Detection

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(41), P. 22475 - 22482

Published: Oct. 5, 2023

Hybrid organic-inorganic perovskites (HOIPs) have exhibited striking application potential in piezoelectric energy harvesting and sensing due to their high piezoelectricity, light weight, solution processability. However, date, the of HOIPs ultrasound detection has not yet been explored. Here, we report synthesis a pair chiral two-dimensional HOIPs, R-(4-bromo-2-butylammonium)2PbBr4 S-(4-bromo-2-butylammonium)2PbBr4 [R-(BrBA)2PbBr4 S-(BrBA)2PbBr4], which show low mechanical strength significant strain coefficients that are advantageous for mechanoelectrical conversion. Benefiting from these virtues, R-(BrBA)2PbBr4@PBAT S-(BrBA)2PbBr4@PBAT [PBAT = poly(butyleneadipate-co-terephthalate)] composite films prominent underwater performance with transmission effectivity 12.0% using 10.0 MHz probe, comparable polyvinylidene fluoride (PVDF) device fabricated same conditions. Density functional theory calculations reveal R-(BrBA)2PbBr4 S-(BrBA)2PbBr4 beneficial acoustic impedance (5.07-6.76 MRayl) compatible water (1.5 MRayl), is responsible facile ultrasound-induced electricity generation. These encouraging results open up new possibilities applying imaging technologies.

Language: Английский

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Stepwise Crystalline Structural Transformation in 0D Hybrid Antimony Halides with Triplet Turn-on and Color-Adjustable Luminescence Switching

Research, Journal Year: 2023, Volume and Issue: 6

Published: Jan. 1, 2023

Intelligent stimuli-responsive fluorescence materials are extremely pivotal for fabricating luminescent turn-on switching in solid-state photonic integration technology, but it remains a challenging objective typical 3-dimensional (3D) perovskite nanocrystals. Herein, by fine-tuning the accumulation modes of metal halide components to dynamically control carrier characteristics, novel triple-mode photoluminescence (PL) was realized 0D through stepwise single-crystal (SC-SC) transformation. Specifically, family hybrid antimony halides designed exhibit three distinct types PL performance including nonluminescent [Ph 3 EtP] 2 Sb Cl 8 ( 1 ), yellow-emissive SbCl 5 ·EtOH and red-emissive ). Upon stimulus ethanol, successfully converted SC-SC transformation with enhanced quantum yield from ~0% 91.50% acting as “turn-on” switching. Meanwhile, reversible luminescence between can be also achieved ethanol impregnation–heating process vapochromism As consequence, new triple-model color-adjustable off–on I –on II halides. Simultaneously, wide advanced applications were anti-counterfeiting, information security, optical logic gates. This photon engineering strategy is expected deepen understanding dynamic mechanism guide development smart cutting-edge switchable device.

Language: Английский

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The Interaction of 2D Materials With Circularly Polarized Light

Advanced Science, Journal Year: 2023, Volume and Issue: 10(10)

Published: Jan. 25, 2023

Abstract 2D materials (2DMs), due to spin‐valley locking degree of freedom, exhibit strongly bound exciton and chiral optical selection rules become promising material candidates for optoelectronic spin/valleytronic devices. Over the last decade, manifesting by circularly polarized lights expedites tremendous fascinating phenomena, such as valley/exciton Hall effect, Moiré exciton, Stark circular dichroism, photoluminescence, spintronic property. In this review, recent advance in interaction light with covering from graphene, black phosphorous, transition metal dichalcogenides, van der Waals heterostructures well small proportion quasi‐2D perovskites topological materials, is overviewed. The confronted challenges theoretical experimental opportunities are also discussed, attempting accelerate prosperity light‐2DMs interactions.

Language: Английский

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Zero-Dimensional Hybrid Cuprous Halide of [BAPMA]Cu₂Br₅ as a Highly Efficient Light Emitter and an X-Ray Scintillator

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(16), P. 20219 - 20227

Published: April 17, 2023

Lead halide perovskites have been explored as a new kind of promising X-ray with wide applications in radiation-associated fields, but low light yield and serious toxicity extremely restrict further applications. To address these issues, we herein demonstrated one zero-dimensional (0D) organic-inorganic hybrid cuprous [BAPMA]Cu2Br5 (BAPMA = N,N-Bis(3-aminopropyl) methylamine) containing discrete [Cu4Br10]6- tetramers excellent lead-free scintillators. Upon UV excitation, displays highly efficient broadband yellowish-green emission dominant peak at 526 nm, large Stokes shift 244 high photoluminescent quantum 53.40%. Significantly, this can also be excited by higher-energy radioluminescence scintillation 43,744 photons/MeV. The detection limit 0.074 μGyair/s is far less than the required value for regular medical diagnostics 5.5 μGyair/s. solution-assembled structure facilely enables [BAPMA]Cu2Br5-based screen to display high-performance imaging spatial resolution 15.79 lp/mm showcasing potential application radiography. In brief, combined merits cost, negligible self-absorption, limit, considerable yield, highlight performance 0D halide.

Language: Английский

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