Photothermal-enhanced synthetic melanin inks for near-infrared imaging

Zou, Yuan; Wu, Tong; Li, Ning; Guo, Xutong; Li, Yiwen

doi:10.1016/j.polymer.2019.122042

Cited by 58 publications

(38 citation statements)

References 44 publications

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“…[ 32 ] In the following work, this predoping strategy was found to be compatible with Mn 3+ , Fe 3+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ , and Ga 3+ to achieve high and tunable loadings. [ 15b,38 ] Similarly, Lu's group found the morphology transformation from sheet‐like to spherical shape of the predoping synthesis of PDA–Fe 3+ . [ 30 ] They demonstrated that these NPs can be converted to Fe 3 O 4 ‐loaded carbon spheres with higher oxygen reduction reaction (ORR) activity.…”

Section: Fabrication and Characterization Of Mpdamentioning

confidence: 98%

Metal‐Containing Polydopamine Nanomaterials: Catalysis, Energy, and Theranostics

Wang

Zou

et al. 2020

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Polydopamine (PDA) is a major type of artificial melanin material with many interesting properties such as antioxidant activity, free‐radical scavenging, high photothermal conversion efficiency, and strong metal‐ion chelation. The high affinity of PDA to a wide range of metals/metal ions has offered a new class of functional metal‐containing polydopamine (MPDA) nanomaterials with promising functions and extensive applications. Understanding and controlling the metal coordination environment is vital to achieve desirable functions for which such materials can be exploited. MPDA nanomaterials with metal/metal ions as the active functions are reviewed, including their synthesis and metal coordination environment and their applications in catalysis, batteries, solar cells, capacitors, medical imaging, cancer therapy, antifouling, and antibacterial coating. The current trends, limitations, and future directions of this area are also explored.

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Section: Fabrication and Characterization Of Mpdamentioning

confidence: 98%

Metal‐Containing Polydopamine Nanomaterials: Catalysis, Energy, and Theranostics

Wang

Zou

et al. 2020

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“…The abundance of metal ions coordination sites in melanins’ structure results in a high affinity for metal cations. This attitude has been extensively exploited to bind different metal ions to improve melanin’s intrinsic features, such as antioxidant and light absorption performance [ 52 , 53 ], but also to confer further non-native contrast properties [ 48 , 49 , 52 ]. Loading strategies include postdoping, predoping, and metal ion-exchange approaches ( Figure 3 ).…”

Section: Synthetic Melanin-like Materials: Opportunities and Issuementioning

confidence: 99%

“…The predoping approach addresses this limitation and enables tunable metal ions amounts within nanoparticles [ 54 ]. The ion-exchange strategy is usually exploited when direct doping cannot be achieved due to aggregates formation [ 52 ].…”

Section: Synthetic Melanin-like Materials: Opportunities and Issuementioning

confidence: 99%

“…Recently, hair-extracted melanin nanoparticles doped with metal ions demonstrated the ability to mimic natural enzyme activities, revealing potent anti-inflammatory and antibacterial activity, thus opening new scenarios in the design of biomedical materials ( Figure 4 ) [ 53 ]. Metal ions doping enhances significantly light absorption, as well as the photothermal conversion of melanins [ 52 ]. Furthermore, melanin complexation with different metal ions makes them a versatile probe for multimodal imaging, combining different imaging methods with peculiar resolution and penetration depth [ 55 , 56 , 57 ].…”

Section: Synthetic Melanin-like Materials: Opportunities and Issuementioning

confidence: 99%

“…SMNP synthetic melanin nanoparticles. Reproduced with permission from [ 52 ]. Copyright Elsevier, 2020.…”

Section: Figurementioning

confidence: 99%

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Melanin and Melanin-Like Hybrid Materials in Regenerative Medicine

et al. 2020

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Melanins are a group of dark insoluble pigments found widespread in nature. In mammals, the brown-black eumelanins and the reddish-yellow pheomelanins are the main determinants of skin, hair, and eye pigmentation and play a significant role in photoprotection as well as in many biological functions ensuring homeostasis. Due to their broad-spectrum light absorption, radical scavenging, electric conductivity, and paramagnetic behavior, eumelanins are widely studied in the biomedical field. The continuing advancements in the development of biomimetic design strategies offer novel opportunities toward specifically engineered multifunctional biomaterials for regenerative medicine. Melanin and melanin-like coatings have been shown to increase cell attachment and proliferation on different substrates and to promote and ameliorate skin, bone, and nerve defect healing in several in vivo models. Herein, the state of the art and future perspectives of melanins as promising bioinspired platforms for natural regeneration processes are highlighted and discussed.

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Flexible Polydopamine Bioelectronics

Jin

Yang

Shi

et al. 2021

Adv Funct Materials

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112

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Flexible bioelectronics have attracted increasing research interests due to their wide range of potential applications in human motion detection, personal healthcare monitoring, and medical diagnosis. Recently, design and fabrication strategies integrated with mussel-inspired polydopamine (PDA) have demonstrated many appealing properties, which meet the structural and functional requirements of high-performance flexible bioelectronics. The inherent multiple reactive sites and hierarchical interactions within PDA can promote the total electrochemical activities, self-healing, surface activation, and biocompatibility of the composite system. This review paper strives to provide a comprehensive overview on this emerging area, including the fabrication methodology, the structural and functional contributions of PDA on the whole composites, and various applications of PDA-based flexible bioelectronics. The current challenges and future outlook in this field are also extensively discussed at the end. This paper aims to serve as a guideline in this emerging area and provide new inspirations toward next-generation integrated multifunctional flexible PDA bioelectronics with a broad range of healthcare applications.

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Photothermal-enhanced synthetic melanin inks for near-infrared imaging

Cited by 58 publications

References 44 publications

Metal‐Containing Polydopamine Nanomaterials: Catalysis, Energy, and Theranostics

Metal‐Containing Polydopamine Nanomaterials: Catalysis, Energy, and Theranostics

Melanin and Melanin-Like Hybrid Materials in Regenerative Medicine

Flexible Polydopamine Bioelectronics

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