One-Drop Self-Assembly of Ultra-Fine Second-Order Organic Nonlinear Optical Crystal Nanowires

Tian, Tian; Cai, Bin; Cheng, Qingqing; Fan, C.; Wang, Yanyan; Xu, Gongjie; Gu, Fuxing; Feng, Liang; Sugihara, Okihiro; Hase, Eiji; Yasui, Takeshi

doi:10.1186/s11671-019-3103-y

Cited by 3 publications

(6 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to previous methods of crystal growth, [4,5,50] we developed a low-cost and rapid method to grow regularshaped 2D-HOIP nanoflakes. Both PEPI and FPEPI can be obtained by rapid saturated vapor cultivation (RSVC) method, details referred to the synthesis part in Supporting Information.…”

Section: Preparation and Properties Of Pepi And Fpepimentioning

confidence: 99%

Stability Improvement of 2D Perovskite by Fluorinated‐Insulator

Zhuang

Shi

et al. 2021

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

much attention due to excitonic property in physics and devices. [18] Stability is the largest obstacle to hinder further development of HOIP materials and devices. [19][20][21] The soft-lattice nature of perovskite directly contributes to the excellent performances of the material by the large high-density defects toleration, [22] however, becomes a serious reason of degradation in turn. The degradation could be caused by internal factors, for example, lattice strain, [23] atomic vacancies, etc., [24] and also could be by external factors, such as light-illumination, [25,26] temperature, [27,28] humidity, [29,30] oxygen in ambient condition, etc. Considerable efforts are focusing on the internal factors of degradation from view of molecule design, for example, doping [23] and lattice-anchoring [31] to release internal strain, ligands engineering [24,32,33] for surface passivation, interfacial engineering to enhance moisture stability, [34] and even redox strategy [35] to recover materials. For external factors, an intuitive strategy is physically isolating perovskites from ambient environments, such as encapsulation with polymers, [36] silica, [37,38] or low penetrative 2D shields [39] such as graphene [40] and hexagonal boron nitride, etc. [41] Although the stability of 2D perovskite possesses some advantages in comparison with that of 3D counterpart due to the hydrophobic nature of organic ligands, there is an obvious yawning gap to commercial requirements. To date, the protocols were limited to improve the stability of 2D perovskites, such as deposition strategy to reduce crystal defects for optical stability, insulator selection for better hydrophobicity, [42] composite strategy with other monolayer materials, [40,41] supramolecular engineering, and so on. [43] It is known that carbon-fluorine is the strongest bond in organic chemistry. [44] The high polarity of carbon-fluorine directly affects the interfacial properties, chemical activity, dielectric constant, surface tension, and so on. One of the results is the hydrophobic interface, which can prevent the adsorption of water molecules on the surface. Additionally, they can passivate surfaces and serve as physiochemical barriers to reactive infiltrating species. In fact, some fluorinated organic compounds have been reported as surface passivation agent to improve the performances of perovskites. [45][46][47] However, researches about stabilizing optical properties by directly utilizing fluorinated organic-ligand as a 2D-HOIP insulating layer are rare. [48,49] In this work, in order to enhance the stabilities of 2D-HOIP, fluorinated cation (2-(4-fluorophenyl) ethylamine [F-PEA]) was chosen as the organic ligand to replace the phenyl ethylamine (PEA) in (PEA) 2 PbI 4 (PEPI), as the schematic diagram shown In this study, the interface of 2D hybrid organic-inorganic perovskites L 2 PbI 4 (here L stands for phenylethylamine, PEA) is engineered by fluorine substitution in its organic insulator layers, and the stability of the perovskite is investigated. For the ...

show abstract

Section: Preparation and Properties Of Pepi And Fpepimentioning

confidence: 99%

Stability Improvement of 2D Perovskite by Fluorinated‐Insulator

Zhuang

Shi

et al. 2021

Adv Materials Inter

Self Cite

View full text Add to dashboard Cite

show abstract

“…DAST@β-CD crystals were fabricated by a surface-supported rapid-evaporation crystallization method and an additional cultivation process [25][26][27][28] . More details of this process are given in the Materials and Experimental sections of the Supplementary Information.…”

Section: Resultsmentioning

confidence: 99%

“…DAST@β-CD crystals were fabricated by a surface-supported rapid-evaporation crystallization method and an additional cultivation process. − More details of this process are given in the Materials and Experimental sections of the Supporting Information. The morphologies of the DAST@β-CD NWs were studied by scanning electron microscopy (SEM), and the results are shown in Figure a,b.…”

Section: Resultsmentioning

confidence: 99%

DAST Optical Damage Tolerance Enhancement and Robust Lasing via Supramolecular Strategy

et al. 2020

Self Cite

View full text Add to dashboard Cite

Crystalline 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST) is known as an excellent organic nonlinear optical (NLO) material. However, it is vulnerable to damage caused by high-intensity laser irradiation, which severely limits its NLO applications. In this study, DAST molecules were included with β-cyclodextrin (β-CD), and DAST@β-CD supramolecular nanowires (NWs), microplates (MPs), and chaotic microcrystals (CMCs) were successfully prepared. All the crystals not only possess excellent NLO properties, but also exhibit greatly enhanced optical damage tolerances (ODTs) and photoluminescence. Under the pumping of a 532 nm picosecond (ps) pulsed laser, we achieved single-mode lasing from MPs and random lasing from CMCs, with thresholds of 55.22 and 88.38 nJ/cm2, respectively. When the laser irradiation had a peak intensity of ∼17.5 GW/cm2, which is 8–9 orders of magnitude higher than the DAST bulk-crystal photobleaching intensity, the CMC laser emission intensity retained ∼95% of its initial value after 4 h of operation in an ambient atmosphere.

show abstract

“…Different polymorphs have low energy of transformation between them, so the deposition conditions play an important role in the formation of the morphology. [26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45] The simultaneous formation of two polymorphs in a thin film of pentacene during PVD was discovered. [48] The almost isoenergetic states of several polymorphs of different dyes were emphasized.…”

Section: Discussionmentioning

confidence: 99%

“…Self-assembled organic structures, including NWs, have been produced by various methods. [25][26][27][28][29][30][31] Usually NWs begin nucleating and growing from a predetermined site. The second end of the NW has to be connected with another material with an additional procedure.…”

Section: Self-orientation Of Nanowires Between Gold Strips On Si Surf...mentioning

confidence: 99%

Electron‐Assisted Deposition‐Polymerization in Vacuum of Polymethines with Terminal Allyl Group

Grytsenko,

Doroshenko,

Kolomzarov

et al. 2023

Macro Materials & Eng

View full text Add to dashboard Cite

Polymethines containing an allyl group have been synthesized. Their films are produced by physical vapor deposition (PVD) on glass, silicon (Si), gold (Au), polytetrafluoroethylene (PTFE), and nanostructured plastic substrates. Optical spectra recorded during the deposition showed no decomposition of molecules. The influence of dye structure and substrate on the morphology of the deposits is studied using atomic force microscopy (AFM). Depending on the dye structure and the substrate material, various nanostructures are grown. Dichroic nanowires (NWs) are formed by self‐assembly on Au and Si substrates. On the Si surface, NWs grow between the edges of neighboring Au stripes. Several methods are used for the selective opening of the allyl group. Smooth films are produced with optical spectra similar to those deposited by PVD. The morphology of the films is dependent on the activation conditions. The thermal stability of the films exceeds the stability of those deposited via PVD.

show abstract

One-Drop Self-Assembly of Ultra-Fine Second-Order Organic Nonlinear Optical Crystal Nanowires

Cited by 3 publications

References 28 publications

Stability Improvement of 2D Perovskite by Fluorinated‐Insulator

Stability Improvement of 2D Perovskite by Fluorinated‐Insulator

DAST Optical Damage Tolerance Enhancement and Robust Lasing via Supramolecular Strategy

Electron‐Assisted Deposition‐Polymerization in Vacuum of Polymethines with Terminal Allyl Group

Contact Info

Product

Resources

About