Cited by Deriving Chiroptical Properties from Intrinsically Achiral Building Blocks of One-Dimensional CsPbBr<sub>3</sub> Perovskite Nanowires

Electron-donating functional groups strengthen ligand-induced chiral imprinting on CsPbBr3 quantum dots DOI

Wiley A. Dunlap-Shohl, Nazifa Tabassum, Peng Zhang

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Jan. 3, 2024

Chiral perovskite nanoparticles and films are promising for integration in emerging spintronic optoelectronic technologies, yet few design rules exist to guide the development of chiral material properties. The chemical space potential building blocks these nanostructures is vast, mechanisms through which organic ligands can impart chirality inorganic lattice not well understood. In this work, we investigate how properties ammonium ligands, most common ligand type used with perovskites, affect circular dichroism strongly quantum confined CsPbBr3 nanocrystals. We show that aromatic stronger electron-donating groups lead higher-intensity associated lowest-energy excitonic transition nanocrystal. argue behavior best explained by a modulation exciton wavefunction overlap between nanocrystal ligand, as functional on shift electron density toward species-perovskite interface increase imprinting.

Language: Английский

Citations

Chiral Multidentate Ligand Facilitating Perovskite Nanocrystals with Circularly Polarized Luminescence and Chiral Assembly DOI

Shuhua Chen, Jie Fu, Congyang Zhang

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 12(14)

Published: Jan. 15, 2024

Abstract Chiral ligand modification has emerged as a promising route to confer intrinsic chirality in perovskite nanocrystals (NCs), thereby imparting them with optically active properties and rendering great superiority the next generation of circularly polarized luminescence. However, functionalization chiral is not fully explored underlying mechanism governing transfer remains elusive. Herein, tryptophan (Try), naturally occurring amino acid, verified serve multidentate ligands attaching on surface NCs. Such strong coordination favors imprinting electronic state CsPbBr 3 , resulting notable circular dichroism features luminescence maximum g lum 2.3 × 10 −3 . It intriguing that intermolecular interaction between Try anchored two neighboring NCs contribute optical well. The RDG‐NCI analysis have confirmed hydrogen bond amine carboxylic groups Try, which may drive assembly

Language: Английский

Citations

Remote chirality transfer in low-dimensional hybrid metal halide semiconductors DOI

Md Azimul Haque, Andrew Grieder, Steven P. Harvey

et al.

Nature Chemistry, Journal Year: 2024, Volume and Issue: 17(1), P. 29 - 37

Published: Oct. 25, 2024

Language: Английский

Citations

Chiral Assembly of Perovskite Nanocrystals: Sensitive Discrimination of Amino Acid Enantiomers DOI

Jinzhou Liu,

Xin-Yi Chai,

Jingtao Huang

et al.

Analytical Chemistry, Journal Year: 2024, Volume and Issue: 96(10), P. 4282 - 4289

Published: March 4, 2024

Chirality is a widespread phenomenon in nature and living organisms plays an important role systems. The sensitive discrimination of chiral molecular enantiomers remains challenge the fields chemistry biology. Establishing simple, fast, efficient strategy to discriminate spatial configuration great significance. Chiral perovskite nanocrystals (PNCs) have attracted much attention because their excellent optical activity. However, it prepare perovskites with both fluorescence properties for sensing. In this work, we synthesized two fluorescent nanocrystal assembly (PNA) by using l- or d-phenylalanine (Phe) as ligands. PNA exhibited good recognition d-proline (Pro). Homochiral interaction led enhancement, while heterochiral quenching, there linear relationship between changing rate d-Pro concentration. Mechanism studies show that homochiral interaction-induced enhancement attributed disassembly PNA, no was found which substitution Phe on surface Pro. This work suggests can be used sensing; will inspire development nanomaterials sensors.

Language: Английский

Citations

Phase Control and Singlet Energy Transfer Enabled by Trimethylamine Modified Boron Dipyrromethene for Stable CsPbBr₃ Quantum Wells DOI

Jinli Liu,

Qian Ma,

Ruicong Li

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(9)

Published: Jan. 9, 2024

Abstract The phase distribution and organic spacer cations play pivotal roles in determining the emission performance stability of perovskite quantum wells (QWs). Here, we propose a universal molecular regulation strategy to tailor enhance CsPbBr 3 QWs. capability sterically hindered ligands with formidable surface binding groups is underscored directing growth refining distribution. With trimethylamine modified boron dipyrromethene (BDP‐TMA) ligand as representative, BDP‐TMA driven can precisely control passivate defects . Notably, acts co‐spacer entity obtained BDP‐TMA‐CsPbBr , facilitating efficient singlet energy transfer tailoring luminescence produce distinctive bluish‐white emission. demonstrates significant under water exposure, light irradiation, moderate temperature. Interestingly, exhibits thermally‐induced dynamic fluorescence at elevated temperatures, which be achieved feasible for advanced information encryption. This discovery paves way exploration QWs applications like temperature sensing, anti‐counterfeiting, other optical smart technologies.

Language: Английский

Citations

Revealing the Self-Assembly Behavior of CsPbBr₃ Nanoscale Supercrystals Mediated by Packed Clusters DOI

Dandan Yang,

Xuebin Zhang,

Yang Yang

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(4), P. 1439 - 1446

Published: March 12, 2024

Surface passivation ligands play a central role in optimizing binding interactions and inter-NC spacing promoting the effective assembly of NC clusters hierarchical superstructures. Here, we report ligand-assisted strategy that depends on quaternary ammonium salts L-type as an driving force to optimize between QDs, thus contributing substantially formation ordered CsPbBr3 nanoscale supercrystals (nano-SCs). Studies structure characterization small-angle X-ray scattering reveal that, initially, SC are assembled into nano-SCs. With assistance different ligands, loose transferred packed clusters. More importantly, only driven by cooperative ligand interdigitation hydrogen bonds mediated Their is systematically demonstrated through surface states. The relationship optical properties structures discussed relation exciton energy, photoluminescence red-shift nonradiative relaxation. Designing types provides new avenue further study self-assembled perovskite.

Language: Английский

Citations

Chirality of CsPbBr₃ Nanocrystals with Varying Dimensions in the Presence of Chiral Molecules DOI

Antika Das, Supriya Ghosal, Kritiman Marjit

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(31), P. 7822 - 7831

Published: July 25, 2024

Chiral lead halide perovskite (LHP) nanocrystals (NCs) have been attracting considerable interest for circularly polarized luminescence (CPL)-based optoelectronic applications. This study combined experimental and computational analyses to investigate how the dimensionality of 3D (cubic) 0D (quantum dots) influences tunable chiral emission CsPbBr3 LHP NCs. The circular dichroism (CD) spectra a significant blue shift from 508 406 nm. dissymmetry factors CD (gCD) change ±2.5 × 10–3 ±7.5 as varies in presence molecule (cyclohexylethylamine, CHEA). A factor (glum) ±5.6 10–4 is observed Theoretical calculations using structural distortion parameters, extent charge transfer, electrostatic potential profiles revealed that most enhancement chirality transfer occurs CHEA molecules NCs, order NCs > 2D (nanoplatelet) (cubic).

Language: Английский

Citations

Size-Homogenized and Strongly Confined Stable Dion–Jacobson Phase CsPbBr₃ Quantum Wells Achieved by Diquaternary Ammonium-Modified BODIPY DOI

Xiaoxia Feng,

Yingna Chen,

Bo Wang

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Ruddlesden–Popper (RP) phase perovskite quantum wells (QWs) offer the potential for achieving deep blue emission. However, RP consists of bilayers monovalent alkylammonium ions arranged back-to-back between separated octahedral layers. The weak van der Waals interactions these cause an inherent tendency dissociation, facilitating generation mixed phases and promoting decomposition perovskite. Herein, we propose a spacer molecule management strategy to achieve size-homogenized strongly confined stable Dion-Jacobson (DJ) CsPbBr3 QWs, using BODIPY (BDP) containing diquaternary ammonium salt as cospacer organic (QWs-BDP). gap is bridged by short dications BDP with steric hindrance in QWs-BDP, which increases rigidity structure shortens layer spacing, reducing both their thickness lateral size. interacts [PbBr6]4–, forming structural domain n = 3. Moreover, facilitates singlet-state energy transfer. Notably, QWs-BDP demonstrates significant stability under polar solvents high-temperature thermal stimuli. Based on external stimuli-responsive nature, prepared anticounterfeiting labels enable encryption decryption information. rational design structures offers new approach controlling dimensions QWs.

Language: Английский

Citations

Intense Circular Dichroism and Spin Selectivity in AgBiS₂ Nanocrystals by Chiral Ligand Exchange DOI

Pengbo Ding, Dezhang Chen, Mohsen Tamtaji

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 11, 2024

Abstract Chiral semiconducting nanomaterials offer many potential applications in photodetection, light emission, quantum information, and so on. However, it is difficult to achieve a strong circular dichroism (CD) signal nanocrystals (NCs) due the complexity of chiral ligand surface engineering multiple, uncertain mechanisms chiroptical behavior. Here, exchange strategy with cysteine on ternary metal chalcogenide AgBiS 2 NCs developed, strong, long‐lasting CD near‐UV region achieved. By carefully optimizing concentration, peaks are observed at 260 320 nm, respectively, giving insight into different binding influencing NCs. Using density‐functional theory, large degree crystal distortion by bidentate mode chelation, efficient ligand‐NC electron transfer, synergistically resulting strongest (g‐factor over 10 −2 ) ligand‐exchanged semiconductor date, demonstrated. To demonstrate effective properties these NCs, spin‐filter device 86% efficiency fabricated. This work represents considerable leap field points toward their future applications.

Language: Английский

Citations

Chiral Lead Halide Perovskite Nanocrystals: Construction Strategies and Photophysical Properties DOI

Tingchao He, Yanyan Cui, Junzi Li

et al.

Advanced Quantum Technologies, Journal Year: 2023, Volume and Issue: 6(11)

Published: Sept. 21, 2023

Abstract Lead halide perovskite nanocrystals (PeNCs) have attracted intense interest by virtue of their numerous remarkable optoelectronic properties, which render them promising for various applications. Over the past few years, substantial progress has been made in study chiral PeNCs, from sample preparation, spectroscopic characterization to practical In this review, state‐of‐the‐art construction strategies and photophysical properties PeNCs summarized. The focus is placed on emerging developments terms synthetic methods, chiroptical nonlinear optics, spintronics PeNCs. end, there a discussion current challenges future prospects versatile, rapidly evolving field.

Language: Английский

Citations