Color-tunable luminescent hydrogels with tough mechanical strength and self-healing ability

Yang, Daqing; Wang, Yige; Li, Zhiqiang; Xu, Yang; Cheng, Fei; Li, Peng; Li, Huanrong

doi:10.1039/c7tc05593e

Cited by 59 publications

(36 citation statements)

References 44 publications

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“…The peaks at 580, 592, 612, 651 and 700 nm correspond to 5 D 0 -7 F 0 , 5 D 0 -7 F 1 , 5 D 0 -7 F 2 , 5 D 0 -7 F 3 and 5 D 0 -7 F 4 transitions of Eu 3+ , respectively. 25 The peak at 612 nm is responsible for the red emission color, which corresponds to the red we see in Fig. 3.…”

Section: Resultsmentioning

confidence: 79%

“…As we all know that the luminescence of rare earth complexes is mainly due to the "antenna effect" between ligands and central ions, the excited triplet state of ligands is very important for their luminescent intensity. [24][25] The excited triplet states of organic ligands correspond to phosphorescent emission, so the length of phosphorescence lifetime can be used as an important index to judge the energy of excited triplet states of ligands. According to Yan et al the report, [30] the distance of π-π stacking of ligands can affect can affect their respective excited triplets and their phosphorescence lifetimes.…”

Section: Resultsmentioning

confidence: 99%

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The influence of the structure of pyromellitic acid on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials

Zhang

Dong

et al. 2021

Preprint

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The development of graphene oxide/rare earth complexes luminescent materials is limited due to the strong quenching ability of graphene oxide. However, the hybrid materials with pyromellitic acid (PMA) as ligand not only have better performance, but also have stronger luminescence intensity. Herein we tested the effect of the carboxylic acid structure of PMA on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials. Phthalic acid (PA), Isophthalic acid (i-PA) and Terephthalic acid (p-PA) are selected as test ligand, representing the o-position, meta-position and para-position effects of PMA. By comparing the luminescence intensity, we found that o-position effect is helpful for the ligand to sensitize rare earth ions, and meta-position and para-position effects are helpful for the graphene oxide sheets (GOSs) to improve the luminescence intensity of hybrid materials and inhibit the quenching effect of the GOSs. Furthermore, we speculate on the relationship between the distance of π-π stacking of GOSs and rare earth complexes and luminescence intensity of hybrid materials. This work provides an important reference for the design of graphene oxide/rare-earth aromatic carboxylic acid hybrid luminescent materials.

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

The influence of the structure of pyromellitic acid on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials

Zhang

Dong

et al. 2021

Preprint

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“…At the same time, the corrosive medium would be in contact with the substrate directly and corrode from spot to surface in the long term. Therefore, self-healing coatings have catched a lot of attention for their autonomically repairment [15][16][17][18][19] and preventing the substrate from corrosion. [20][21][22] It is reported that the prerequisite for self-healing of damage is the generation of a mobile phase.…”

Section: Introductionmentioning

confidence: 99%

Self‐healing of TiSiN/Ag coatings induced by Ag

et al. 2019

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Ceramic coatings often suffer from the formation and expansion of microcracks, which leads to a failure of the protective function. In this work, we observed self‐healing of the microcracks in the TiSiN/Ag multilayer coating upon heating. This behavior can be attributed to diffusion of the Ag atoms to the cracks in the multilayer coating, while similar cracks in the TiSiN monolayer coating remain unchanged after the same treatment. Furthermore, the TiSiN/Ag coating with healed cracks possesses similar electrochemical corrosion and biofouling properties to the as‐deposited one, suggesting that TiSiN/Ag is a promising system in marine engineering applications. The mechanism of self‐healing was explained by kinetic simulations based on ab initio molecular dynamics and the diffusion activation energies of Ag in irregular ceramic structures have been calculated. The here adopted theoretical method also provides a new pathway for exploring new coating systems with a potential self‐healing function.

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“…Researches on organic-inorganic hybrid materials have been thriving over the past few years because these materials combined the structural, physical and chemical properties of both inorganic host materials and organic guest species 1–3 . Intercalation reaction of natural layered minerals is a well-known method for preparing hybrid materials in a nanoscale 4–6 .…”

Section: Introductionmentioning

confidence: 99%

Efficient preparation of kaolinite/methanol intercalation composite by using a Soxhlet extractor

2019

Sci Rep

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Kaolinite/methanol intercalation composite (KMe) is a key precursor for preparing clay-based inorganic/organic hybrid materials and kaolinite nanoscrolls. However, synthesis of KMe is a time and methanol dissipative process and the complexity of this process also limits its further applications. In this study, Soxhlet extractor was introduced to synthesize an intercalation composite and KMe was efficiently synthesized in a Soxhlet extractor through a continuous displacement process by using kaolinite/DMSO intercalation composite (KD) as a precursor. The formation process of kaolinite/methanol intercalation composite was studied by X-ray diffraction (XRD) and infrared spectroscopy (IR). The results showed that the DMSO in kaolinite could be completely displaced by methanol in this process and the preparation of KMe could be completed in 8 hours, which was far faster than the reported methods. Moreover, methanol used in this process could be recycled. Furthermore, the resulting material could be successfully used to prepare kaolinite nanoscrolls in high yield.

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Color-tunable luminescent hydrogels with tough mechanical strength and self-healing ability

Cited by 59 publications

References 44 publications

The influence of the structure of pyromellitic acid on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials

The influence of the structure of pyromellitic acid on the luminescence intensity of graphene oxide/rare earth complexes hybrid materials

Self‐healing of TiSiN/Ag coatings induced by Ag

Efficient preparation of kaolinite/methanol intercalation composite by using a Soxhlet extractor

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