Synthesis of Fréchet type dendritic benzyl propargyl ether and Fréchet type triazole dendrimer
摘要:
Frechet type dendritic benzyl propargyl ethers were synthesized by the reaction of propargyl bromide with the corresponding Frechet type dendritic benzyl alcohol. A propargyl focal point functionalized dendrons were applied for the construction of symmetric and unsymmetric dendrimers containing 1,2,3-triazole rings as connectors via click chemistry with a tripodal azide core or a azide focal point functionalized Frechet type dendrons. (c) 2005 Elsevier Ltd. All rights reserved.
Synthesis of Diblock Codendrimer by Double Click Chemistry
作者:Jae Wook Lee、Seung Choul Han、Won Ho Ji、Sung-Ho Jin、Ji Hyeon Kim
DOI:10.5012/bkcs.2012.33.12.4103
日期:2012.12.20
Efficient double click methods for the synthesis of diblock codendrimers were developed. The synthetic strategy involved the sequential click reactions between an alkyne and an azide. The short core building block, 1,4-diazidobutane, was chosen to serve as the azide functionalities for dendrimer growth via click reactions with the alkyne-functionalized PAMAM dendrons as hydrophilic dendron and alkyne-functionalized Fr$\acutee}$chet-type dendrons as hydrophobic dendron. The structure of diblock codendrimers was confirmed by $^1H$ and $^13}C$ NMR spectroscopy, IR spectroscopy, mass spectrometry, and GPC analysis.
Synthesis of Dendrimer Containing Dialkylated-fluorene Unit as a Core Chromophore via Click Chemistry
作者:Seung-Choul Han、Sung-Ho Jin、Jae-Wook Lee
DOI:10.5012/bkcs.2012.33.1.137
日期:2012.1.20
emissive dendrimers having the chromophore at core via the coppercatalyzed 1,3-dipolar cycloaddition reaction between alkyne and azide was described. 2,7-Diazido-9,9-dioctyl9H-fluorene, designed to serve as the core in dendrimer, was stitched with the alkyne-functionalized Frechettype and PAMAM dendrons by the click chemistry leading to the formation of the corresponding fluorescent dendrimers in high
Synthesis of Dendrimer Containing Carbazole Unit as a Core Chromophore
作者:Seung-Choul Han、Sung-Ho Jin、Jae-Wook Lee
DOI:10.5012/bkcs.2012.33.10.3451
日期:2012.10.20
E-mail: shjin@pusan.ac.krReceived May 23, 2012, Accepted July 7, 2012Key Words : Alkyne, Azide, Carbazole, Click chemistry, DendrimerDendrimers, which are prepared by repetition of a givenset of reactions using either divergent or convergentstrategies, are highly branched and regular macromoleculeswith well-defined structures and have served as functionalobjects in nanotechnology and nano-materials
E-mail: shjin@pusan.ac.krReceived May 23, 2012, Accepted July 7, 2012Key Words : 炔烃、叠氮化物、咔唑、点击化学、DendrimerDendrimers,通过使用发散或收敛策略重复给定的一组反应来制备,是高度支化和规则的大分子,具有明确的结构,并已作为纳米技术和纳米材料科学的功能对象。
Synthesis and Characterization of Poly(benzyl ether) Dendrimer Containing Fluorene as a Core Chromophore
poly(benzyl ether) dendrimers having the chromophore at core via the copper-catalyzed 1,3-dipolar cycloaddition reaction between alkyne and azide was described. 2,7-Diazido-9H-fluorene, designed to serve as the core in dendrimer, was stitched with the alkyne-functionalized poly(benzyl ether) dendrons by the click chemistry leading to the formation of fluorescent poly(benzyl ether) dendrimers in high yields
Synthesis of Unsymmetrical Fréchet-type Dendrimers via Double Click Chemistry
作者:Seung-Choul Han、Seung-Hwan Kwak、Sung-Ho Jin、Jae-Wook Lee
DOI:10.5012/bkcs.2012.33.4.1393
日期:2012.4.20
dendrimers. 2 The convergent methodology installs the core in the final step, enabling the incorporation of functionalities. It provides greater structural control than the divergent approach due to its relatively low number of coupling reactions at each growth step. Future applications of dendrimers rely on efficient and practical synthetic procedures. Therefore, development of a versatile methodology