Salicylideneaniline-Based Covalent Organic Frameworks: A New Family of Multistate Second-Order Nonlinear Optical Switches

Quertinmont, Jean; Maschio, Lorenzo; Datta, Ayan; Champagne, Benoı̂t

doi:10.1021/acs.jpcc.0c07672

Cited by 17 publications

(16 citation statements)

References 61 publications

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“…Although the third-order NLO applications of tin dioxide derivatives has been studied, the functionalization of conjugated organic ligands should be able to further modulate and enhance their NLO behaviors. In addition, theoretical calculation is an effective method to study NLO properties on clusters and molecules nowadays, and some useful results have been obtained. − …”

Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Effects of Structural Modification of Tin Nanoclusters for Third-Order Nonlinear Optical Properties

et al. 2021

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Tin oxide based materials have attracted much attention as new sources for nonlinear optical (NLO) devices, while the electronic mechanism behind the structure and nonlinearity is still unclear. In this work, by precisely controlling different functionalization ligands, here a series of binuclear [( n BuSn) 2 (TEOA) 2 L 2 ] (L = monocarboxylic acid ligand) complexes have been synthesized and characterized; we also adopted a new method to make the metal clusters and PMMA blend together for NLO testing. Importantly, the electronic structure, static thirdorder NLO properties, sum over states (SOS) have been studied by both experimental and density function theory (DFT) analysis. The effects for general NLO polarizability under various conditions, including different substitutions ligands and replacement of the metal cores, have been further investigated. The results indicate the static second hyperpolarizabilities (γ) is inversely proportional to the band gap decreases. Notably, the theory predicts that the third-order nonlinear coefficient will double through the synergistic effects of pull−push groups. The hole−electron analysis of the main excited states indicates the simultaneous introduction of pull−push electron groups into the system cause the excitation of the valence layer from LE to LLCT, which also leads to significant increase in the γ value of complex 13. This work demonstrates that an efficient adjustment for the intensity of NLO polarizability can be achieved by regulating the substitutions and the material structures, providing a new potential for the application of tin-oxo clusters in the field of nonlinear optics.

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Section: Introductionmentioning

confidence: 99%

Experimental and Theoretical Studies on Effects of Structural Modification of Tin Nanoclusters for Third-Order Nonlinear Optical Properties

et al. 2021

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“…BN chains serve as potential valleys separating the carbon π conjugation into small independent carbon π conjugations, creating more polarizable moieties and inducing dipole-allowed electron excitations in zigzag nanotubes and thereby bringing about enhanced second-order NLO responses. The modulation of π skeletons by BN deserves to be explored for their potentially intriguing properties for potential applications, e.g., dielectric capacitor and molecular NLO switches . These structural manipulations open an avenue for the development of hybridized carbon-based materials and shed light on the design of promising NLO materials for applications in optoelectronics devices.…”

Section: Discussionmentioning

confidence: 99%

“…The modulation of π skeletons by BN deserves to be explored for their potentially intriguing properties for potential applications, e.g., dielectric capacitor 66 and molecular NLO switches. 67 These structural manipulations open an avenue for the development of hybridized carbon-based materials and shed light on the design of promising NLO materials for applications in optoelectronics devices.…”

Section: ■ Conclusionmentioning

confidence: 99%

BN-Doped Carbon Nanotubes and Nanoribbons as Nonlinear-Optical Functional Materials for Application in Second-Order Nonlinear Optics

Yang

Duan

et al. 2023

ACS Appl. Nano Mater.

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Pure carbon-based nanomaterials with good π conjugation and thermal stability, e.g., nanotubes and nanoribbons, have long served as promising conjugated materials for application in second-order nonlinear-optical (NLO) devices but suffer from two inherent structural problems: weak polarity (or even nonpolarity) and high chemical reactivity ascribed to zigzag edge states. In the present work, boron nitride (BN) chains are used to divide carbon nanotubes and nanoribbons, forming a functional block to tune the electronic structure, and thus induce charge redistribution or modify the molecular energy gap for second-order NLO materials or integrated electronic materials. A balance between the electronic kinetic stability and second-order NLO properties is established by structural manipulation. The strong second-order NLO responses in the visible and near-infrared regions make these hybridized carbon-based molecules potential NLO materials for applications in biological nonlinear optics. The application of BN to tune the electronic structure of carbon nanomaterials paves a path for fabricating nanoelectronic and nano-NLO devices.

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“…This work is also a perfect example to show how the organic building blocks tune the NLO response of the COFs. [42] COF-1 to COF-5 have the same tris(Nsalicylideneaniline) unit connected by five different linkers 1 to 5 (Figure 7a). The tris(N-salicylideneaniline) unit has an electron-accepting nature and has shown NLO properties in various small molecules.…”

Section: Minireviewsmentioning

confidence: 99%

Covalent Organic Frameworks as Emerging Nonlinear Optical Materials

et al. 2023

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The vastness of organic synthetic strategies and knowledge of reticular chemistry have made covalent organic frameworks (COFs) one of the most chemically and structurally diverse class of materials with potential applications ranging from gas storage, molecular separation, and catalysis to energy storage and magnetism. Recently, this class of porous materials has garnered increasing interest as potential nonlinear optical (NLO) materials. Traditionally, inorganic crystals, small-molecule organic chromophores, and oligomers have been studied for their NLO response. Nevertheless, COFs offer significant advantages over existing NLO materials in terms of higher mechanical strength, thermochemical stability, and extended conjugation. Herein, we discuss crucial aspects, terminology, and measurement techniques related to NLO, followed by a critical analysis of the design principles for COFs with NLO response. Furthermore, we touch on selected potential applications of these NLO materials. Finally, future prospects and challenges of COFs as NLO materials are discussed.

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Salicylideneaniline-Based Covalent Organic Frameworks: A New Family of Multistate Second-Order Nonlinear Optical Switches

Cited by 17 publications

References 61 publications

Experimental and Theoretical Studies on Effects of Structural Modification of Tin Nanoclusters for Third-Order Nonlinear Optical Properties

Experimental and Theoretical Studies on Effects of Structural Modification of Tin Nanoclusters for Third-Order Nonlinear Optical Properties

BN-Doped Carbon Nanotubes and Nanoribbons as Nonlinear-Optical Functional Materials for Application in Second-Order Nonlinear Optics

Covalent Organic Frameworks as Emerging Nonlinear Optical Materials

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