[((R)-C8H12N)4][Bi2Br10] and [((S)-C8H12N)4][Bi2Br10]: Chiral Hybrid Bismuth Bromides Templated by Chiral Organic Cations

Moon, Tae Hwan; Oh, Seung‐Jin; Ok, Kang Min

doi:10.1021/acsomega.8b02877

Cited by 59 publications

(45 citation statements)

References 68 publications

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“…The non-centrosymmetric chemical structure of chiral perovskites implies their potential in nonlinear optics applications. Second-harmonic generation (SHG), a special type of the second-order nonlinear optics response, was first performed in chiral 2D perovskite nanowires (R-and S-MPEA)1.5PbBr3.5(DMSO)0.5 and thereafter in various chiral perovskites 699,[709][710][711][712][713][714] . Those studies shown that SHG signals always depend on polarization, particle size, temperature or wavelength.…”

Section: Chiral 2d Perovskitesmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

309

119

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Research on two-dimensional (2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications.In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief background 物理化学学报 Acta Phys. -Chim. Sin. 2021, 37 (12), 2108017 (3 of 151) introduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials (PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field.

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Section: Chiral 2d Perovskitesmentioning

confidence: 99%

Recent Progress on Two-Dimensional Materials

Chang¹,

Chen²,

Chen³

et al. 2021

Acta Physico Chimica Sinica

309

119

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“…[50] Thus, numerous combinations of chiral perovskites are possible, and further optimization processes are necessary to obtain high-quality well-aligned crystal structures along the chiral axis. [51]…”

Section: Inherent Chiral Crystal Structured Oihps Involving Chiral Moleculesmentioning

confidence: 99%

Chiral Perovskites for Next‐Generation Photonics: From Chirality Transfer to Chiroptical Activity

2021

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with different substances; therefore, the resulting change in polarization state can reveal the chemical configuration, [6] structural conformation, [7] and optoelectronic properties of a substance. [8] This chiroptical phenomenon and interpretation of chiral characteristics constitute the basis of chiral photonics. In particular, circularly polarized photoluminescence (CPPL) (i.e., differential emission of left-handed circularly polarized (LCP) and righthanded circularly polarized (RCP) lights) is absolutely necessary for scrutinizing the ground state of materials, [9] whereas circular dichroism (CD) spectroscopy (i.e., differential absorption of LCP and RCP lights) can provide useful information regarding the structure of the excited state of materials. [7] These complementary phenomena enable the development of advanced smart photonic technologies.A material is chiral if it cannot be superimposed on its mirror image. This phenomenon is commonly observed in natural organic compounds, such as small amino acids, saccharide, starch, and DNA. Owing to their noncentrosymmetric structure (e.g., no inversion symmetry, mirror plane, and glide plane), chiral materials exhibit nonlinear optical responses to CPL in CD and CPPL spectra. Although organic chiral materials are ubiquitous and exhibit strong chiroptical activity in the near-UV region, [10] the structural softness of organic chiral molecules makes them difficult to stack, resulting in poor charge transfer capability in practical polarization-based optoelectronic devices. Additionally, in chiral photonics research, focus should be on stable and broad wavelength tunability over the visible light region to realize optoelectronic devices based on the polarization phenomenon. In this regard, OIHPs have emerged as promising candidates for nonlinear optic devices because of their facile color tunability through halide composition engineering, [11] quantum size effects, [12] small effective mass, [13] long spin lifetime exceeding 1 ns, diffusion lengths ≈85 nm, and high electron/hole mobility. [14] A recent study demonstrated that OIHPs exhibit strong spin-orbit coupling of the electronic states, [15] spin-dependent optical selection rules, and large Rashba splitting, [16] suggesting that the OIHPs might exhibit exceptional spin polarization properties. [17] Despite the exceptional spin polarization properties, OIHP materials cannot be utilized in chiral photonics owing to their centrosymmetric crystal structure. However, the flexible crystal Organic-inorganic hybrid halide perovskites (OIHPs) are commonly used as prototypical materials for various applications, including photovoltaics, photodetectors, and light-emitting devices. Since the chiroptical properties of OIHPs are deciphered in 2017, chiral OIHPs have been rediscovered as new hybrid systems comprising chiral organic molecules and achiral inorganic octahedral layers. Owing to their exceptional optoelectrical properties and structural flexibility, chiral OIHPs have received a considerable amount of attention...

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“…The reasons, bright PL, narrow light emission, balanced charge carrier mobility, and tunable excitation binding energy, are presented here. [167,168] However, with the exception of a few chiral hybrid organic-inorganic metal halides that were reported for second-order nonlinear optics, [169] CPL photodetector, [170,171] ferroelectrics [172] or thin films with circularly polarization absorption feature, [173,174] etc., it is a pity that its CPL is rarely studied. This section will briefly discuss hybrid organic-inorganic metal halides with synthetic strategies (Figure 9A), emerging chiroptical properties and applications.…”

Section: Hybrid Organic-inorganic Metal Halidesmentioning

confidence: 99%

Circularly polarized luminescence of agglomerate emitters

et al. 2021

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Circularly polarized luminescence (CPL) originates from the chiral emissive excited states. CPL materials have promising applications in 3D optical displays, encryptions, biological probes, chiral photoelectric devices, and CPL switches, most of which require excellent CPL performances including bright luminescence and high luminescence dissymmetry factor (g lum ) in the agglomerate state. This review systematically summarizes the progress about CPL of aggregate and solid materials, such as organic materials, metal-organic materials (such as coordination polymers, organic-inorganic metal halides, metal clusters, and cluster-assembled materials), the assembled materials by supramolecular interactions, and liquid crystals. We also present the current challenges and a future perspective of chiral emitting agglomerate materials.

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[((R)-C₈H₁₂N)₄][Bi₂Br₁₀] and [((S)-C₈H₁₂N)₄][Bi₂Br₁₀]: Chiral Hybrid Bismuth Bromides Templated by Chiral Organic Cations

Abstract: Single crystals of organically templated chiral bromobismuthates(III), [(( R / S )-C 8 H 12 N) 4 ][Bi 2 Br 10 ], have been grown for the first time via a slow evaporation method. Each of the chiral molecular compound consists of ( R ) or ( S )-1 - phenylethylammonium ([C 8… Show more

Cited by 59 publications

References 68 publications

Recent Progress on Two-Dimensional Materials

Recent Progress on Two-Dimensional Materials

Chiral Perovskites for Next‐Generation Photonics: From Chirality Transfer to Chiroptical Activity

Circularly polarized luminescence of agglomerate emitters

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