Publications
Detailed Information
Eumelanin supported palladium nanoparticle as a heterogeneous catalyst for Suzuki cross coupling reaction in water
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이윤식 | - |
| dc.contributor.author | 유재명 | - |
| dc.date.accessioned | 2017-07-19T05:53:52Z | - |
| dc.date.available | 2017-07-19T05:53:52Z | - |
| dc.date.issued | 2015-02 | - |
| dc.identifier.other | 000000024788 | - |
| dc.identifier.uri | https://hdl.handle.net/10371/129356 | - |
| dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 화학생물공학부, 2015. 2. 이윤식. | - |
| dc.description.abstract | Eumelanin, which is a biological pigment, is widely distributed in almonst all living organism | - |
| dc.description.abstract | animals, plants, human skins and hair. The pigment has many distinctive physical and chemical properties such as broad featureless absorption, antibiotic funtion and conducting property. Eumelanin contains various functional groups like hydroxyl and carboxylic acid groups which exhibit ability to capture metal ions. Thus, eumelanin could be a good candidate as a catalyst support. We have successfully prepared eumelanin supported palladium nanoparticle catalysts from L-DOPA (L-3,4-dihydroxyphenylalanine). As expected, the eumelanin supported palladium nanoparticle catalysts (Eum@Pd NP) exhibited a good catalytic activity in Suzuki cross coupling in water. Even with aryl chlorides, the catalyst gave high yield in water. | - |
| dc.description.tableofcontents | TABLE OF CONTENTS
ABSTRACT ii TABLE OF CONTENTS iii LIST OF TABLES vi LIST OF FIGURES vii LIST OF SCHEMES viii LIST OF ABBREVIATIONS ix I. Introduction 2 I. 1. Eumelanin 3 I. 2. Heterogeneous Catalyst 6 I. 3. Cross Coupling Reaction in Water 7 I. 4. Research Objectives 10 II. Experimental Section 13 II. 1. General 14 II. 1. 1. Materials 14 II. 1. 2. Instrument 14 II. 2. Preparation of Eumelanin supported palladium nanaopariticle 16 II. 2. 1. Preparation of Eumelanin 16 II. 2. 2. Preparation of Eumelanin Supported Palladium Nanoparticle 16 II. 3. Suzuki Coupling Reactions Catalyzed by Eumelanin Supported Palladium Nanoparticle 18 II. 3. 1. Optimization of Suzuki Coupling Reaction 18 II. 3. 2. General Experimental Procedure for Suzuki Coupling Reacion of Aryl Halides with Phenylboronic Acid 19 II. 3. 3 Reaction Profile of Suzuki Coupling Reaction 19 II. 3. 4 Reusablility Test of Eumelanin Supported Palladium Nanoparticle 20 III. Results and Discussion 21 III. 1. Preparation and Characterization of Eumelanin Supported Palladium Nanoparticle 22 III. 1. 1 Preparation of Eumelanin 22 III. 1. 2 Characterization of Eumelanin supported palladium nanaopariticle 27 III. 2. Suzuki Coupling Reaction Catalyzed by Eumelanin Supported Palladium Nanoparticle 32 III. 2. 1 Effectes of Bases and Amount of Palladium Nanoparticle in Suzuki Coupling Reaction 32 III. 2. 2 Reaction Profile of Suzuki Coupling Reaciton 37 III. 2. 3 Suzuki Coupling Reaction of Various Aryl Halides with Phenylboronic Acid in Water 39 III. 2. 4 Reusability Test of Eumelanin Eumelanin Supported Palladium Nanoparticle 42 IV. Conclusions 44 References 46 Abstract in Korean | - |
| dc.format | application/pdf | - |
| dc.format.extent | 1626222 bytes | - |
| dc.format.medium | application/pdf | - |
| dc.language.iso | en | - |
| dc.publisher | 서울대학교 대학원 | - |
| dc.subject | Eumelanin | - |
| dc.subject | Palladium | - |
| dc.subject | Heterogeneous Catalyst | - |
| dc.subject | Suzuki-Miyaura Reaction | - |
| dc.subject | Water | - |
| dc.subject.ddc | 660 | - |
| dc.title | Eumelanin supported palladium nanoparticle as a heterogeneous catalyst for Suzuki cross coupling reaction in water | - |
| dc.type | Thesis | - |
| dc.description.degree | Master | - |
| dc.citation.pages | 54 | - |
| dc.contributor.affiliation | 공과대학 화학생물공학부 | - |
| dc.date.awarded | 2015-02 | - |
- Appears in Collections:
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.