(CsPb1-xSnxI3)量子點/聚苯乙烯/四甲氧基矽烷複合材料之螢光靈敏度應用於檢測 pH值與脲酶濃度變化

English | 正體中文 | 简体中文 | 全文筆數/總筆數 : 45069/58245 (77%)
造訪人次 : 2342694 線上人數 : 356

RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.

Taipei Medical University Institutional Repository > 醫學工程學院 > 奈米醫學工程研究所 > 博碩士論文 > Item 987654321/61293

請使用永久網址來引用或連結此文件: http://libir.tmu.edu.tw/handle/987654321/61293

題名:	(CsPb1-xSnxI3)量子點/聚苯乙烯/四甲氧基矽烷複合材料之螢光靈敏度應用於檢測 pH值與脲酶濃度變化 The fluorescence sensitivity of quantum dots CsPb1-xSnxI3 on polystyrene/tetramethoxysilane for detecting changes in pH and urease concentration
作者:	NGUYET, NGUYEN VO THANH
貢獻者:	奈米醫學工程研究所碩士班郭聰榮陳志華
關鍵詞:	Perovskite quantum dots;Polystyrene/tetramethoxysilane;Biosensor;pH sensing;Urease detector
日期:	2021-07-02
上傳時間:	2022-01-05
摘要:	CsPbI3 NCs are promising candidates for optoelectronics, bioimaging, and biosensor application due to their high quantum yield, size-controllable emission wavelength, and defect tolerance. However, an unstable crystal phase of CsPbI3 when contacted to ambient air limited their bioapplication. To claim these limitations, Sn is alloyed with Pb in the CsPbI3 lattice by hot injection preparation to produce CsPb1-xSnxI3 QDs with higher emission intensity and stability than pure CsPbI3 QDs. After two months, CsPb1-xSnxI3 QDs maintain 91.6% of their initial PL intensity. These CsPb0.4Sn0.6I3 QDs are modified surface ligand by AET and then coated with polystyrene-SiO2, generating PPSM composite with double core-shells that are stable in water and can be used as pH and urease sensors. After 1 hour in aqueous solution, PPSM microspheres can maintain 54.6 % of their original fluorescence intensity and showed sensitivity in the pH range of 5 to 9. The mechanism of urease sensing system is based on rapid urease test use to detect Helicobacter pylori bacteria in patients with peptic ulcer disease. The PL intensity data show the linear relationship between PPSM quenched and urease concentration. The result showed that in the range of urease concentration from 0.2 to 1.0 U/mL, the PL intensity of the PPSM decreased as the urease concentration increased. These findings suggest PPSM can be used as pH and urease sensing to detect some diseases in human body and expand the application of CsPbI3-based nanocrystals in biomedical.
描述:	碩士指導教授：郭聰榮指導教授：陳志華委員：曾靖孋委員：楊正昌委員：林群哲
資料類型:	thesis
顯示於類別:	[奈米醫學工程研究所] 博碩士論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	121	檢視/開啟

檢視Licence

在TMUIR中所有的資料項目都受到原著作權保護.

TAIR相關文章

著作權聲明 Copyright Notice

本平台之數位內容為臺北醫學大學所收錄之機構典藏，包含體系內各式學術著作及學術產出。秉持開放取用的精神，提供使用者進行資料檢索、下載與取用，惟仍請適度、合理地於合法範圍內使用本平台之內容，以尊重著作權人之權益。商業上之利用，請先取得著作權人之授權。
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.
瀏覽或使用本平台，視同使用者已完全接受並瞭解聲明中所有規範、中華民國相關法規、一切國際網路規定及使用慣例，並不得為任何不法目的使用TMUIR。
By utilising the platform, users are deemed to have fully accepted and understood all the regulations set out in the statement, relevant laws of the Republic of China, all international internet regulations, and usage conventions. Furthermore, users must not use TMUIR for any illegal purposes.
本平台盡力防止侵害著作權人之權益。若發現本平台之數位內容有侵害著作權人權益情事者，煩請權利人通知本平台維護人員([email protected])，將立即採取移除該數位著作等補救措施。
TMUIR is made to protect the interests of copyright owners. If you believe that any material on the website infringes copyright, please contact our staff([email protected]). We will remove the work from the repository.

資料載入中.....