Repository logo
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
Repository logo
    Communities & Collections
    Research Outputs
    Fundings & Projects
    People
    Organizations
    Statistics
  • English
  • 中文
  • Log In
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. TMU Publications / 北醫出版品
  3. .博碩士學位論文
  4. .98學年度
  5. 水溶性多功能奈米量子點之合成、修飾與細胞毒理評估
 
  • Details
Options

水溶性多功能奈米量子點之合成、修飾與細胞毒理評估

Other Title
Synthesis, modification and cytotoxicity evaluation of functionalized water-dispersed semiconductor quantum dots
Type
thesis
Date Issued
2010-06-18
Author(s)
鍾安琪
Advisor
麥富德
Subjects
系所名稱:醫學科學研究所
Description
學位別:碩士
語文別:英文
指導教授:麥富德
共同指導教授:張榮善
口試委員:吳和生;張宏名
中文關鍵字:量子點(核/殼結構);量子產率;老鼠神經纖維母細胞
Abstract
本篇研究主要是著重於水溶性(water-soluble)量子點合成與研究,以及於生物相容性(bio-compatibility)方面之應用探討,所合成出來的量子點種類包含只有核結構(core)的CdTe及包括核/殼結構(core/shell)的CdTe/CdS,且在此量子點表面修飾含carboxyl group 的MPA(3-mercaptopropionic acid ),使其帶有親水(hydrophilic)的特性。所合成出來的水溶性量子點可利用其表面的carboxyl group官能基與含有amine group 的BSA (bovine Serum albulmin)相接,藉此研究量子點的bio-compatibility和photo-stability,結果顯示量子點與BSA相接可增加它們的螢光穩定性 ,而且發現量子點與BSA作用之最適濃度為0.037mM。根據各項分析結果得知:量子點結合BSA,具有很高的潛在能力,可被廣泛運用於未來tumor targeting 的研究。
此外,由於CdTe/CdS具有很好的photo-luminescence且CdTe與CdS的lattice mismatch 和band gap energy 相差亦比較小, 所以本研究使用CdTe(core) 以及CdTe/CdS(core/shell)去研究其cell viability,發現當使用CdTe-MPA培養老鼠神經纖維母細胞(mouse neuro-blastoma cell line)時,會導致老鼠神經纖維母細胞存活率(cell viability)降低, 但CdTe/CdS(core/shell)加入後發現對於細胞沒有毒化現象,且當量子點得濃度很高時,也不會對細胞存活率(cell viability)造成太大的影響,可見核/殼結構之CdTe/CdS量子點對於細胞具有很好的相容性。
除進行表面修飾外,本研究亦探討量子點的內部改質對其光譜及化學特性的影響,包括探討內部改質後量子點的photoluminescence特性和Mn2+ doped CdTe/CdS (core/shell)反應的elementary process。所選用的材料為Mn2+、TiO2 和ZnO 去作內部改質,結果發現TiO2-doped CdTe/CdS (core/shell)及ZnO-doped CdTe/CdS (core/shell)的Photo-luminescence效果會比CdTe/CdS (control)還好。此外, 觀察Mn2+-doped CdTe/CdS與反應時間的關係,發現在30min 時進行surface adsorption 而60min時會進行lattice incorporation,又由Electron Dispersive X-ray (EDX)光譜分析,可確定Mn進入晶格內。最後探討反應溫度變化情形,發現當Mn2+-doping CdTe/CdS時,以115 oC為最佳條件。由本研究結果可推測doping Mn2+, ZnO, TiO2 ,在未來如生醫影像(bio-imaging)等生物醫學領域上,具有很好的應用潛力。
URI
https://203.71.86.71/handle/123456789/13289

Copyright Notice

● The digital content on this platform is part of the Taipei Medical University Institutional Repository, featuring various academic works and outputs from the institution. It offers free access to academic research and public education for non-commercial use.

● Please use the content appropriately and within legal boundaries to respect copyright owners' rights. For commercial use, please obtain prior authorization from the copyright owner. Users must not use TMUIR for any illegal purposes.

● By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in this statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions.

● TMUIR is committed to protecting the interests of copyright owners. If you believe that any material on this website infringes copyright, please contact our staff at libirtmu@gmail.com, and we will remove the work from the repository.

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement
  • Send Feedback