Facile fabrication of biodegradable endothelium-mimicking coatings on bioabsorbable zinc-alloy stents by one-step electrophoretic deposition

Pan, Kai; Zhang, Wei; Shi, Hua; Dai, Miao; Zhang, Youdi; Chen, Maohua; Wei, Wei; Zheng, Yufeng; Liu, Xiaoya; Li, Xiaojie

doi:10.1039/d2tb00119e

Cited by 14 publications

(7 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in the Raman spectra of Figure c, the Raman-shifted nature of TA-PEI is exhibited in TA-PEI@CuNWs, and the enhanced peak of the C element derived from TA-PEI appears at 1590 cm –1 . In addition, as shown in Figure e,f after TA-PEI is compounded with CuNWs, the Cu element in TA-PEI@CuNWs produces a new characteristic peak of Cu 2+ with a 2p 3/2 characteristic peak of Cu 2+ at 934 eV and a 2p 1/2 characteristic peak of Cu 2+ at 954 eV, while in the original CuNW spectrum, only Cu 2p 3/2 and Cu 2p 1/2 characteristic peaks at 931.3 and 951 eV were observed; as shown in Figure g,h the C–N bond in TA-PEI@CuNWs with Cu 2+ ligand bonding produced a bonding energy at 399.4 eV; Cu 2+ ···N–C new characteristic peaks for C–O bonds in TA-PEI@CuNWs and CO bonds in TA-PEI@CuNWs after coordination bonding with Cu 2+ yielded bonding energies at 530 eV for Cu 2+ ···O–C and 532.5 eV for Cu 2+ ···OC new characteristic peaks . The bonding mechanism of TA-PEI with CuNWs is summarized here as shown in Figure d.…”

Section: Resultsmentioning

confidence: 99%

“…As shown in the Raman spectra of Figure 5c, the Raman-shifted nature of TA-PEI is exhibited in TA-PEI@CuNWs, and the enhanced peak of the C element derived from TA-PEI appears at 1590 cm −1 . 33 In addition, as shown in Figure 5e,f after TA-PEI is compounded with CuNWs, the Cu element in TA-PEI@CuNWs produces a new characteristic peak of Cu 2+ with a 2p 3/2 characteristic peak of Cu 2+ at 934 eV and a 2p 1/2 characteristic peak of Cu 41 The bonding mechanism of TA-PEI with CuNWs is summarized here as shown in Figure 5d. All of the above-mentioned data indicate that the TAderived o-phenylene triol group and the PEI-derived primary amino group in TA-PEI undergo strong coordination bonding with the CuNWs.…”

Section: Combined Mechanism Of Ta-pei With Cunwsmentioning

confidence: 94%

See 1 more Smart Citation

Construction of a Reciprocal-Supporting Phenol-amine@CuNW Network for Antisedimentation Conductive Ink

Luo

Guo

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Homogeneously dispersed copper nanowire (CuNW) materials are the basis for practical applications in many types of electronic devices. At present, the dispersion of CuNWs in water is achieved through polymeric spatial site resistance effects primarily and the electrostatic dispersion mechanism in a few. However, the electrical conductivity of CuNWs could be weakened by the excessive addition of polymers; therefore, it is difficult to maintain a stable dispersion enduringly for surface charge modifiers. Based on the coagulation mechanism of colloids, a novel antisedimentation mechanism is refined by this work. Directed by this mechanism, a stable reciprocal-supporting antisedimentation conductive CuNW ink was achieved enduringly and a uniform conductive coating (1.81–5.65 Ω·sq–1) was successfully manufactured. The tannic acid–polyethylene imine (TA-PEI) could support copper nanowires to maintain a stable height of 61.4% after 15 days best, while CuNWs in other systems would settle completely in one day. Meanwhile, the TA-PEI composite cluster antisedimentation network not only provided massive spatial potential resistance for CuNWs but also modified the surface charge of CuNWs. CuNWs were dispersed stably in this phenol-amine@CuNW network. Furthermore, the CuNWs were crosslinked more tightly with each other relying on the vigorous adhesive properties of TA-PEI. With this antisedimentation mechanism and simple treatment process, CuNW ink will be utilized in more applications.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Combined Mechanism Of Ta-pei With Cunwsmentioning

confidence: 94%

Construction of a Reciprocal-Supporting Phenol-amine@CuNW Network for Antisedimentation Conductive Ink

Luo

Guo

et al. 2023

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…Traditionally, the degradation behavior of biodegradable metals has been evaluated under static conditions. However, researchers have increasingly recognized the importance of corrosive medium flow, especially in the context of biodegradable scaffolds [41][42][43][44]. In the meantime, the ability to control degradation behavior is crucial in the design of a bone substitute.…”

Section: Biodegradation Behaviormentioning

confidence: 99%

The effect of topological design on the degradation behavior of additively manufactured porous zinc alloy

Li,

Shi,

et al. 2023

Preprint

View full text Add to dashboard Cite

The advent of additively manufactured biodegradable porous metals presents a transformative opportunity to meet the criteria of ideal bone substitutes. Precisely tailoring their degradation behavior constitutes a pivotal aspect of this endeavor. In this study, for the first time, we investigated the effects of topological designs on the degradation profile of laser powder bed fusion (LPBF) Zn scaffolds under dynamic in vitro immersion tests. Specifically, four types of Zn-0.4Mn-0.2Mg scaffolds (beam-based: diamond, face center cubic; surface-based: gyroid, schwarz-P) were designed and fabricated. The degradation mechanism of the scaffolds was comprehensively evaluated using both experimental and simulation methods. The results illuminate the profound impact of structural design on the degradation properties of the Zn alloy scaffolds. The beam-based diamond and face center cubic scaffolds exhibited a degradation rate of 0.5–0.8 mm/year with a relatively uniform degradation mode under dynamic immersion. On the contrary, the surface-based gyroid and Schwarz-P scaffolds demonstrated a notably reduced degradation rate due to lower permeability. This restricted the diffusion of medium ions within the pores, culminating in the accumulation of degradation products and more severe localized degradation. This study underscores the potential of topological design as a compelling strategy for tailoring the degradation profile of additively manufactured biodegradable scaffolds, thereby advancing their suitability as bone substitutes.

show abstract

“…Especially, the surface microstructures designed to mimic extracellular matrix (ECM) have caught the attention of researchers. [24][25][26] In recent years, some organic 27,28 /inorganic 29,30 and composite coatings 25,31,32 have been reported to improve the osseointegration ability of Znbased orthopedic implants. Thereinto, zinc phosphate (ZnP) and hydroxyapatite (HA) coatings have gained popularity due to their demonstrated effectiveness in reducing corrosion rates, suppressing Zn 2+ release, and enhancing osteogenic activity of Zn-alloy substrates.…”

Section: Introductionmentioning

confidence: 99%

Reduced corrosion of Zn alloy by HA nanorods for enhancing early bone regeneration

Mao,

Chen,

Liu

et al. 2024

Biomater. Sci.

View full text Add to dashboard Cite

show abstract

Facile fabrication of biodegradable endothelium-mimicking coatings on bioabsorbable zinc-alloy stents by one-step electrophoretic deposition

Abstract: The zinc-alloy stent is one of the best potential candidates for bioabsorbable metal stents because of its appropriate corrosion rate aligned to the duration of the healing process of surrounding...

Cited by 14 publications

References 51 publications

Construction of a Reciprocal-Supporting Phenol-amine@CuNW Network for Antisedimentation Conductive Ink

Construction of a Reciprocal-Supporting Phenol-amine@CuNW Network for Antisedimentation Conductive Ink

The effect of topological design on the degradation behavior of additively manufactured porous zinc alloy

Reduced corrosion of Zn alloy by HA nanorods for enhancing early bone regeneration

Contact Info

Product

Resources

About