Enhancement of Thermoplasmonic Neural Modulation Using a Gold Nanorod-Immobilized Polydopamine Film
| العنوان: | Enhancement of Thermoplasmonic Neural Modulation Using a Gold Nanorod-Immobilized Polydopamine Film |
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| المؤلفون: | Hyunsoo Jang, Dongjo Yoon, Yoonkey Nam |
| المصدر: | ACS Applied Materials & Interfaces. 14:24122-24132 |
| بيانات النشر: | American Chemical Society (ACS), 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Indoles, Nanotubes, Polymers, Animals, Metal Nanoparticles, General Materials Science, Gold, Phototherapy, Rats |
| الوصف: | Photothermal neural activity inhibition has emerged as a minimally invasive neuromodulation technology with submillimeter precision. One of the techniques involves the utilization of plasmonic gold nanoparticles (AuNPs) to modulate neural activity by photothermal effects ("thermoplasmonics"). A surface modification technique is often required to integrate AuNPs onto the neural interface. Here, polydopamine (pDA), a multifunctional adhesive polymer with a wide light absorption spectrum, is introduced both as a primer layer for the immobilization of gold nanorods (GNRs) on the neural interface and as an additional photothermal agent by absorbing near-infrared red (NIR) lights for more efficient photothermal effects. First, the optical and photothermal properties of pDA as well as the characteristics of GNRs attached onto the pDA film are investigated for the optimized photothermal neural interface. Due to the covalent bonding between GNR surfaces and pDA, GNRs immobilized on pDA showed strong attachment onto the surface, yielding a more stable photothermal platform. Lastly, when photothermal neural stimulation was applied to the primary rat hippocampal neurons, the substrate with GNRs immobilized on the pDA film allowed more laser power-efficient photothermal neuromodulation as well as photothermal cell death. This study suggests the feasibility of using pDA as a surface modification material for developing a photothermal platform for the inhibition of neural activities. |
| تدمد: | 1944-8252 1944-8244 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62f291ddd6aa52b54e23cc4b8c421473 https://doi.org/10.1021/acsami.2c03289 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....62f291ddd6aa52b54e23cc4b8c421473 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 19448252 19448244 |
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