2020年9月4日 · In this work, we propose a facile method to regulate the light absorption behaviors of PDA by constructing donor-acceptor pairs within the microstructures through the chemical connections between indoledihydroxy/indolequinone and their oligomers with 2,2,6,6-tetramethylpiperidine-1-oxyl moiety.

2015年7月29日 · 显示了对仿生聚多巴胺（PDA）的电子顺磁共振（EPR）的全面研究。 此外，温度依赖性光谱EPR数据在3.8–300 K范围内显示。 先前报道的黑色素样品之间的磁化率行为差异很小。 这些变化归因于热活化过程。 更重要的是，幻影上的多巴胺自由基的EPR时空二维成像首次出现。 结果，解决了聚多巴胺作为EPR成像标记物的新的可能应用。 A thorough investigation of biomimetic polydopamine (PDA) by Electron Paramagnetic Resonance (EPR) is shown.

2016年3月10日 · RT-EPR spectroscopy with spin-trapping was used to characterize the systems consisting of α-carbonyl diazomethane (methyl diazoacetate (MDA), ethyl diazoacetate (EDA), phenyl diazoacetate (PDA...

2024年1月1日 · PDA@SiO 2 core-shell system is electrochemically non-degradable showing a quasi-reversible electrochemical response, which makes it a promising candidate for sensor applications.

2019年5月9日 · Nanoscale disassembly of mussel-inspired polydopamine (PDA) in ionic liquids (ILs) was recently shown to induce an electron paramagnetic resonance (EPR)-detectable reorganization of free radical centers in the resulting nanoparticles (NPs) in an IL-controlled manner. Herein, we report electrical impedance sp

2 天之前 · The EPR analysis revealed the g-factor of N 5 as 2.0031 (Fig. S3), which is slightly lower than that of PDA, exhibiting a value of 2.0052 [48]. These approximately equivalent values indicate the similarity of the radical species of PDA and N 5, and the difference can be attributed to the incorporation of diamine in the nanofilm. Furthermore ...

本研究针对纳米载药体系存在的生物相容性的问题以及光动力治疗中穿透深度不够的问题，采用具有强近红外吸收、高光热转换效率以及无生物毒性的聚多巴胺 (Polydopamine, PDA)为光热剂与药物载体，具有近红外吸收、高活性氧产量的吲哚菁绿 (Indocyanine green, ICG)为光敏剂和被载药物，通过水热法制备用于光热/光动力联合治疗的ICG/PDA复合纳米载药体系。 该方法基于PDA大量的离域π电子，将芳香分子ICG通过π-π堆积和疏水相互作用实现ICG的有效装载，旨在解决 …

2024年12月15日 · This study utilizes continuous wave (CW), pulse, and time-resolved (TR) electron paramagnetic resonance (EPR) spectroscopy to explore the radical species formed at the TAPA (tris(4−aminophenyl)amine)-PDA (Terephthaldicarboxaldehyde)/ZnIn 2 S 4 (TP/ZIS) heterojunction interface. CW and pulse EPR identify stable radical defects localized near ...

Electron paramagnetic resonance (EPR) measurement was carried out to verify this hypothesis. PDA-i (i = 1 to 3) displayed much higher EPR signal intensities than...

2024年12月16日 · 通过连续波（CW）和脉冲波（pulse）表征，能够表征界面上的稳定自由基缺陷，这些自由基缺陷位点捕获水分子。时间分辨EPR表征发现TP向ZIS的光生电子转移，导致产生自旋关联自由基对，表明S-scheme结构异质结的高效率载流子分离以及空间电荷转移。 （2）