Progress of Research on Organic/Organometallic Mechanoluminescent Materials

Mingli, Liu; Wu, Qi; Shi, Huifang; An, Zhongfu; Wei, Huang

doi:10.6023/a17110504

Cited by 32 publications

(16 citation statements)

References 15 publications

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“…S5a), and no ML emission can be seen when grinded again. It means that Tb-SBD is essentially an FML material that exhibits ML at the expense of crystal fracture, resembling most reported metal- organic complexes and ML-MOFs [28][29][30][31][32][45][46][47][48][49][50][51]. Besides, there is no change in the phase after grinding (Fig.…”

Section: Of Tb-sbdsupporting

confidence: 70%

“…However, it remains a challenging to develop ML-MOFs. As far as we know, metal-organic complexes with ML properties have emerged as early as the 1960s [45] and have been extensively investigated as well [46][47][48][49][50][51], but similar studies on CPs, especially MOFs, have not been reported until 2004 [28]. Thereafter, Eliseeva et al [29] obtained several ML-MOFs [Ln(hfa) 3 (Q)] ∞ , (Ln = Eu, Tb; hfa = hexafluoroacetylacetonate; Q = 1,4-diacetoxybenzene (ACETBZ), 1,4-dimethyltherephtalate (DMTPH)) by assembling lanthanide β-diketonates and aromatic bidentate O-donor ligands together.…”

Section: Introductionmentioning

confidence: 99%

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Lanthanide-doped metal-organic frameworks with multicolor mechanoluminescence

et al. 2020

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Metal-organic frameworks (MOFs) and mechanoluminescent (ML) materials have been considered as two types of promising materials that have their own application fields. It would be amazing to endow one material with the advantages of ML and MOFs, thus broadening their applications. However, there are quite few investigations on this topic, and the ML mechanism in ML-MOFs remains unclear. In this study, we proposed a strategy for developing ML-MOFs by doping lanthanide ions into the non-centrosymmetric SBD ([Sr(μ-BDC)(DMF)] ∞) MOF, and successfully synthesized a series of lanthanide-doped MOFs Ln-SBD (Ln = Tb, Dy, Sm, Eu) and Tb 1−x Eu x-SBD (x = 0.2, 0.4, 0.6, 0.8) with multicolor ML. The lanthanide ions were uniformly distributed in the matrix of the SBD-MOF, and occupied the Sr site. The ML-MOFs exhibited intense multicolor ML emissions varying from green to yellow to red by changing the co-doping ratios and species of lanthanide ions. The similar ML and photoluminescence (PL) spectra indicated that the ML emission was assigned to the radiative transition from the excited states to the ground states of lanthanide ions. The radiative transition was induced by the electron bombardment process that originated from the piezoelectric effect of the non-centrosymmetric SBD host. In addition, a pioneering temperature sensing research based on ML was carried out, which is promising for realizing dual-functional detection of stress and temperature without excitation light sources. This study gives a unique insight for developing more versatile and interesting smart materials by combining the versatility of MOF with the ML emission, imparting additional values to both MOF and ML materials. Moreover, this study provides a general rule for selecting MOFs with an acentric structure as the host for ML materials.

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Section: Of Tb-sbdsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Lanthanide-doped metal-organic frameworks with multicolor mechanoluminescence

et al. 2020

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“…Inspired by the great promotion of AIE effect in the development of bright ML luminogens, more and more scientists devoted themselves into this field. [65][66][67][68][69][70][71][72] Within just a few years, a series of bright ML materials have been developed with the similar strategy. Based on them, the internal mechanism was carefully studied and deeply understood, especially for the relationship between molecular packing and ML emission ( Figure 13).…”

Section: Mechanoluminescence (Ml)mentioning

confidence: 99%

Organic luminescent materials: The concentration on aggregates from aggregation‐induced emission

2020

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The research of organic luminescent materials in aggregate has drawn more and more attention for their wide applications. To adjust the luminescent properties for aggregates, a deep understanding of the corresponding internal mechanism is needed. In this short review, a brief introduction of aggregation‐induced emission (AIE) and some other solid state luminescence behaviors derived from or parallel to AIE is presented. Particularly, the relationship between emission property and intermolecular/intramolecular interactions is summarized, with the aim to guide the further development of organic optoelectronic materials in aggregate.

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“…[25][26][27] Cyanostilbene derivatives are widely used in developing new AIE luminogens, and this category of organic molecules in the solid state exhibited mechanoluminescence (ML) and high luminescence photoluminescence (PL) efficiency, and the conformation of the packing mode plays a significant role in affecting the ML behavior. [28][29][30] Thus, what would happen when the AIE luminogens meet the organic photoelectric-magnetic materials?…”

Section: Introductionmentioning

confidence: 99%

Piezoelectricity of a Ferrocene-based Organic Small Molecule

Xing¹,

Li²,

Zhang³

et al. 2020

Preprint

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Non-centrosymmetric crystals with piezoelectric properties have emerged as promising materials for smart wearable systems and biomimetic robots. Here we present a novel small ferrocene-based organic molecule crystal (Fc-Cz) possessing high anisotropic-dependent optical and electronic properties, which has been utilized as an ultrasensitive piezoelectric material for the development of a strain sensor. The flexible piezoelectric sensor can distinguish subtle strain or deformations (such as wrist motion) with fast response time (< 40 ms) via detectable piezoelectric signals (Imax = 580 pA). Density functional theory (DFT) indicated that the external pressure can affect the dipole moment by changing the molecular configuration of the asymmetric single crystal Fc-Cz in the crystalline state, leading to a change of polarity, as well as an enhanced dielectric constant. Based on our knowledge, this work is the first example verifying that artificial organic small molecules can serve as simple, stable, high-performance tactile sensors, and this has the potential to open the door to low-cost flexible wearable devices and energy harvesting applications.

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Progress of Research on Organic/Organometallic Mechanoluminescent Materials

Cited by 32 publications

References 15 publications

Lanthanide-doped metal-organic frameworks with multicolor mechanoluminescence

Lanthanide-doped metal-organic frameworks with multicolor mechanoluminescence

Organic luminescent materials: The concentration on aggregates from aggregation‐induced emission

Piezoelectricity of a Ferrocene-based Organic Small Molecule

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