Discovering New Type of Lead‐Free Cluster‐Based Hybrid Double Perovskite Derivatives with Chiral Optical Activities and Low X‐Ray Detection Limit DOI

Zeng‐Kui Zhu,

Tingting Zhu, Jianbo Wu

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(26)

Опубликована: Март 24, 2023

Abstract 2D chiral hybrid perovskites have recently emerged as outstanding semiconductor materials. However, most of the reported limited structural types and contain high levels toxic lead, which severely hinders their further applications. Herein, by using a mixed‐cation strategy, an unprecedented type lead‐free cluster‐based double perovskite derivatives are successfully obtained, [( R / S ‐PPA) 4 (IPA) 6 Ag 2 Bi I 24 ]·2H O ( 1‐R 1‐S ), n ‐BA) 2‐R 2‐S ) ‐PPA= –1‐phenylpropylamine; IPA=isopentylamine; ‐BA= ‐butylamine). Their inorganic skeletons linked binuclear {Bi 10 } infinite chain {Ag 14 ∞ , in bismuth clusters multiple coordination modes (e.g., tetrahedral AgI octahedral introduced into system for first time. This introduction induces distortion layer, may facilitate transfer chirality from cations achiral skeletons. Further, circular dichroism measurements circularly polarized light detection confirm inherent optical activities. In addition, exhibits ultralow X‐ray limit 129.5 nGy s −1 is 42‐fold lower than that demands regular medical diagnosis (5.5 µGy ). study provides pathway to construct novel derivatives.

Язык: Английский

Chirality-Dependent Structural Transformation in Chiral 2D Perovskites under High Pressure DOI

Meng‐En Sun,

Yonggang Wang, Fei Wang

и другие.

Journal of the American Chemical Society, Год журнала: 2023, Номер 145(16), С. 8908 - 8916

Опубликована: Апрель 14, 2023

Chiral perovskites have attracted considerable attention owing to their potential applications in spintronic- and polarization-based optoelectronic devices. However, the structural chirality/asymmetry transfer mechanism between chiral organic ammoniums achiral inorganic frameworks is still equivocal, especially under extreme conditions, as systematic differences been rarely explored. Herein, we successfully synthesized a pair of new enantiomeric perovskite (S/R-3PYEA)PbI4 (3PYEA2+ = C5NH5C2H4NH32+) an (rac-3PYEA)PbI4. Hydrostatic pressure was used, for first time, systematically investigate evolution optical behavior At approximately 7.0 GPa, exhibits chirality-dependent transformation with bandgap "red jump" dramatic piezochromism from translucent red opaque black. Upon further compression, previously unreported chirality-induced negative linear compressibility (NLC) achieved (S/R-3PYEA)PbI4. High-pressure characterizations first-principles calculations demonstrate that pressure-driven homodirectional tilting homochiral ammonium cations strengthens interactions S/R-3PYEA2+ Pb–I frameworks, inducing formation asymmetric hydrogen bonds N–H···I–Pb The enhanced H-bonding break symmetry trigger greater degree in-plane out-of-plane distortion [PbI6]4– octahedra, which are responsible phase transition NLC, respectively. Nevertheless, balanced H-bonds incurred by equal proportions S-3PYEA2+ R-3PYEA2+ counteract force, leading absence transition, spectral jump", NLC

Язык: Английский

Процитировано

40
Toward Efficient Two‐Photon Circularly Polarized Light Detection through Cooperative Strategies in Chiral Quasi‐2D Perovskites DOI Creative Commons
Wentao Wu, Xiaoying Shang,

Zhijin Xu

и другие.

Advanced Science, Год журнала: 2023, Номер 10(9)

Опубликована: Янв. 22, 2023

Abstract Organic–inorganic hybrid perovskites carry unique semiconducting properties and advanced flexible crystal structures. These characteristics of organic–inorganic create a promising candidacy for circularly polarized light (CPL) detection. However, CPL detections based on chiral are limited to UV visible wavelengths. The natural quantum well structures layered generate strong light–matter interactions. This makes it possible achieve near‐infrared (NIR) detection via two‐photon absorption in the sub‐wavelength region. In this study, cooperative strategies dimension increase mixed spacer cations used obtain pair multilayered (R‐ β ‐MPA)EA 2 Pb Br 7 (S‐ (MPA = methylphenethylammonium EA ethylammonium). distinctive bi‐cations interlayer inorganic skeletons provide enhanced photoconduction. Moreover, superior photoconduction leads prominent NIR response with responsivity up 8.1 × 10 −5 A W −1 . It is anticipated that work can serve as benchmark fabrication optimization efficient by simple chemical design.

Язык: Английский

Процитировано

38
Gradient Bandgap‐Tunable Perovskite Microwire Arrays toward Flexible Color‐Cognitive Devices DOI
Yue Fu, Meng Yuan, Yingjie Zhao

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(11)

Опубликована: Янв. 2, 2023

Abstract Color‐cognitive detection plays an important role in many developing applications such as optical sensing, high‐solution imaging, wearable biometric monitoring, and human visual cognitive system. Although color‐cognitive devices have been demonstrated, the large size, complex manufacturing, high cost, non‐flexible processing impede their for distinguishing color information. Herein, gradient bandgap‐tunable perovskite microwire arrays with excellent crystallinity pure crystallographic orientation are realized by synergy of capillary‐bridge assembly method mild component engineering processing, yielding high‐performance integrated spectral resolution 14 nm ranging from 405 to 760 nm, responsivities over 10 3 A W −1 , detectivities 15 Jones. Furthermore, flexible demonstrated accurately recognizing similar colors, which can be applied blindness correction. The efficient recognition performances, together open new opportunities on‐chip integration based on arrays.

Язык: Английский

Процитировано

34
Stepwise Crystalline Structural Transformation in 0D Hybrid Antimony Halides with Triplet Turn-on and Color-Adjustable Luminescence Switching DOI Creative Commons
Jian-Qiang Zhao,

Yue‐Yu Ma,

Xue‐Jie Zhao

и другие.

Research, Год журнала: 2023, Номер 6

Опубликована: Янв. 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.

Язык: Английский

Процитировано

34
Discovering New Type of Lead‐Free Cluster‐Based Hybrid Double Perovskite Derivatives with Chiral Optical Activities and Low X‐Ray Detection Limit DOI

Zeng‐Kui Zhu,

Tingting Zhu, Jianbo Wu

и другие.

Advanced Functional Materials, Год журнала: 2023, Номер 33(26)

Опубликована: Март 24, 2023

Abstract 2D chiral hybrid perovskites have recently emerged as outstanding semiconductor materials. However, most of the reported limited structural types and contain high levels toxic lead, which severely hinders their further applications. Herein, by using a mixed‐cation strategy, an unprecedented type lead‐free cluster‐based double perovskite derivatives are successfully obtained, [( R / S ‐PPA) 4 (IPA) 6 Ag 2 Bi I 24 ]·2H O ( 1‐R 1‐S ), n ‐BA) 2‐R 2‐S ) ‐PPA= –1‐phenylpropylamine; IPA=isopentylamine; ‐BA= ‐butylamine). Their inorganic skeletons linked binuclear {Bi 10 } infinite chain {Ag 14 ∞ , in bismuth clusters multiple coordination modes (e.g., tetrahedral AgI octahedral introduced into system for first time. This introduction induces distortion layer, may facilitate transfer chirality from cations achiral skeletons. Further, circular dichroism measurements circularly polarized light detection confirm inherent optical activities. In addition, exhibits ultralow X‐ray limit 129.5 nGy s −1 is 42‐fold lower than that demands regular medical diagnosis (5.5 µGy ). study provides pathway to construct novel derivatives.

Язык: Английский

Процитировано

27