資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://ir.lib.ncu.edu.tw/handle/987654321/107821
|
| 題名: | Multifunctional phosphine stabilized gold nanoparticles: An active catalytic system for three-component coupling reaction |
| 作者: | 戴帕克;Borah, Bibek Jyoti;Borah, Subrat Jyoti;Dutta, Dipak Kumar |
| 貢獻者: | 資訊電機學院電機工程學系 |
| 關鍵詞: | Aldehydes - chemistry;Amines - chemical synthesis;Catalysis;Excipients - chemistry;Gold - chemistry;Materials Testing;Metal Nanoparticles;Phosphines - chemistry |
| 日期: | 2013-07-01 |
| 上傳時間: | 2026-04-23 14:26:40 (UTC+8) |
| 出版者: | American Scientific Publishers;26650 The Old Road, Suite 208, Valencia, California 91381-0751, USA: American Scientific Publishers |
| 摘要: | 摘要： Multifunctional phosphine based ligands, 1,1,1-tris(diphenylphosphinomethyl)ethane [CH3C(CH2PPh2)3][P3] and 1,1,1-tris(diphenylphosphinomethyl)ethane trisulphide [CH3C(CH2P(S)Ph2)3][P3S3] have been introduced to stabilize Au°-nanoparticles having small core diameter and narrow size distribution. The Au°-nanoparticles were synthesized by the reduction of HAuCl4 precursor with NaBH4 in the presence of ligand P3 or P3S3 using two phases, one pot reaction at room temperature. The Au°-nanoparticles exhibit face centered cubic (fcc) lattice having different crystalline shape i.e., single crystallite stabilized by P3 while P3S3 forms decahedral shapes. Surface plasmon bands at ∼520 nm and TEM study indicate particle size below 2 and 4 nm for Au°-nanoparticles stabilized by P3 and P3S3 respectively, which are attributable to the stronger interaction of Au° (Soft) with P (Soft) than Au° (Soft) with S (less Softer than P). Au°-nanoparticles stabilized by P3S3 shows higher thermal stability than that of P3. The synthesized Au°-nanoparticles serve as an efficient catalyst for one-pot, three-component (A3) coupling of an aldehyde, an amine and an alkyne via C-H alkyne-activation to synthesize propargylamines (85-96%) without any additives and precaution to exclude air.
其他題名： J Nanosci Nanotechnol
出版者： 26650 The Old Road, Suite 208, Valencia, California 91381-0751, USA: American Scientific Publishers
出版日期： 2013-07-01
出處： Journal of nanoscience and nanotechnology, 2013-07, Vol.13 (7), p.5080-5087
識別號： ISSN: 1533-4880
識別號： EISSN: 1533-4899
識別號： DOI: 10.1166/jnn.2013.7576
識別號： PMID: 23901533 |
| 顯示於類別: | [電機工程學系] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 17 | 檢視/開啟 |
|
在NCUIR中所有的資料項目都受到原著作權保護.
|
