一种抗坏血酸-纳米金刚石复合物及其制备方法
By carboxylating nanodiamonds and covalently linking them with ascorbic acid, an NDs-VC complex was prepared, which solved the problem of nanodiamond aggregation, improved the UV blocking and free radical scavenging effects of sunscreens, and avoided the toxicity risks of traditional sunscreens.
CN117503632BActive Publication Date: 2026-07-17HENAN UNIVERSITY OF TECHNOLOGY +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HENAN UNIVERSITY OF TECHNOLOGY
- Filing Date
- 2023-12-18
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Nanodiamonds have a serious tendency to aggregate in sunscreens, resulting in poor dispersibility and difficulty in effectively blocking ultraviolet rays and scavenging free radicals. In addition, traditional sunscreen ingredients pose a toxicity risk.
Method used
NDs-VC complexes were prepared by carboxylating nanodiamonds and covalently linking them with ascorbic acid (VC). The synthesis conditions were optimized to improve the VC grafting rate, reduce the particle size, and improve the dispersibility.
Benefits of technology
A well-dispersible NDs-VC complex was obtained, which improved UV blocking ability and free radical scavenging potential, avoiding the toxicity risks of traditional sunscreens.
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Figure CN117503632B_ABST
Abstract
本发明公开了一种抗坏血酸‑纳米金刚石复合物及其制备方法，属于金刚石生物应用领域。本发明首先对纳米金刚石进行羧基化处理，然后利用化学接枝法将羧基化纳米金刚石与抗坏血酸复合，得到抗坏血酸含量为10%‑20%的抗坏血酸‑纳米金刚石复合物，复合物粒径小于150nm，粒度分布小于0.25。抗坏血酸修饰纳米金刚石不仅有效解决了纳米金刚石的作为防晒剂的分散性差和悬浮稳定差问题，与抗坏血酸复合后，纳米金刚石的抗紫外透过、光催化活性、自由基清除潜力等性能得到明显改善。
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