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pH 민감성 스티릴 퀴놀리니움 유도체들의 선형 및 비선형 광학 특성의 스위칭에 관한 연구
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 권오필 | - |
| dc.contributor.author | Koo, Min-Jeong | - |
| dc.date.accessioned | 2018-11-08T08:18:49Z | - |
| dc.date.available | 2018-11-08T08:18:49Z | - |
| dc.date.issued | 2015-08 | - |
| dc.identifier.other | 20119 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/12767 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2015. 8 | - |
| dc.description.tableofcontents | Ι. Introduction 1 II. Experiments 2 II.1 Chemical structures 2 II.2 Synthesis 4 II.2.1 Materials 4 II.2.2 Synthesis of Intermediate 5 II.2.3 Synthesis of Chromophores 6 II.3 General Characterization 8 II.3.1 1H-NMR Analysis 8 II.3.1.1 1H-NMR Analysis of Intermediate 8 II.3.1.2 1H-NMR Analysis of Chromophores 10 II.3.2 Absorption, Fluorescence Measurements in Various pH Values 13 II.3.3 Determination of pKa Values 14 II.3.3.1 Determination of pKa Values of Intermediate 15 II.3.3.2 Determination of pKa Values of Chromophores 17 II.3.4 Fluorescence Quantum Yield Measurement 18 II.3.4.1 Fluorescence Quantum Yield Measurement of Chromophores 18 III. Results and Discussion 20 III.1 Thermal Analysis 20 III.2 Optical Properties 22 III.2.1 UV-vis Absorption Spectra 22 III.2.2 Fluorescence Spectra 27 III.2.3 Hyper-Rayleigh Scattering Measurement 31 IV. Conclusions 34 V. References 35 | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | pH 민감성 스티릴 퀴놀리니움 유도체들의 선형 및 비선형 광학 특성의 스위칭에 관한 연구 | - |
| dc.title.alternative | A study on the pH-triggered Linear and Nonlinear Optical Switches Based on Styryl Quinolinium Derivatives | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.alternativeName | Min-Jeong Koo | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2015. 8 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 705448 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000020119 | - |
| dc.subject.keyword | pH Probes | - |
| dc.subject.keyword | Linear and Nonlinear Optical Switches | - |
| dc.subject.keyword | Styryl Quinolinium Derivatives | - |
| dc.description.alternativeAbstract | We report on a series of π-conjugated styryl quinolinium push-pull chromophores and investigate their pH-triggered linear and nonlinear optical properties. Two pH-sensitive functional groups are located at electron acceptor and electron donor, respectively. New styryl quinolinium derivatives with protonated quinolinium group (NHQ) at electron acceptor have dimethylamino, methoxyphenol and phenol group acting as an electron donor for 2-(4-(dimethylamino)styryl)quinolinium 4-methylbenzenesulfonate (DA-NHQ), 2-(4-hydroxy-3-methoxystyryl)quinolinium 4-methylbenzenesulfonate (HM-NHQ), 2-(4-hydroxystyryl)quinolinium 4-methylbenzenesulfonate (OH-NHQ), respectively. These derivatives exist in three different chemical forms that can be interconverted using changes in pH values. We characterize their optical properties by absorption, fluorescence and hyper-Rayleigh scattering measurements in various pH values. Results show that styryl quinolinium derivatives exhibit three states switching mode of fluorescent (FL) and nonlinear optical (NLO) response with high contrast. Interestingly, these derivatives display different FL/NLO switching modes, and therefore have a high potential for imaging applications. | - |
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