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Fabrication of Graphene/Conducting Polymer Nanohybrid Materials and Their Sensor Applications : 그래핀/전도성 고분자 나노하이브리드 물질의 제조 및 센서로의 응용
DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | 장정식 | - |
dc.contributor.author | 박진욱 | - |
dc.date.accessioned | 2017-07-13T08:42:24Z | - |
dc.date.available | 2017-07-13T08:42:24Z | - |
dc.date.issued | 2016-02 | - |
dc.identifier.other | 000000131913 | - |
dc.identifier.uri | https://hdl.handle.net/10371/119770 | - |
dc.description | 학위논문 (박사)-- 서울대학교 대학원 : 화학생물공학부, 2016. 2. 장정식. | - |
dc.description.abstract | Graphene/conducting polymer (CP) nanohybrid materials have attracted considerable attention, due to their synergetic effects, including enhanced surface area, charge carrier mobility, thermal/electrical conductivity, and chemical/mechanical stability. To synthesize the graphene/CP nanohybrid materials for using in electronic device applications, covalent and non-covalent synthetic methods have been introduced. Contrary to non-covalent method, covalent functionalization requires time-consuming and harsh conditions, because it needs firstly to introduce functional group on the surface of graphene and CPs. On the other hand, non-covalent functionalization offers facile way to obtain graphene/CP nanohbyrid materials through secondary bonding interactions, such as π–π interactions. In-situ synthetic method, as one of the non-covalent synthetic method, is very promising and powerful tool to design graphene/CP nanohybrids owing to getting uniform nanohbyrid materials. Furthermore, the morphology and shape of the graphene/CP nanohybrids can be controlled by selectively designing the morphology of starting materials (graphene or CP materials).
In this study, various graphene/CP nanohbyrid materials are introduced by using in-situ synthetic method. The synthesized nanohybrid materials exhibit excellent electrical/chemical properties, enabling to be applied in sensor applications. Synergetic effects of graphene/CP nanohbyrid mateirals provide rapid response/recovery time, when using as a transducer in the sensing device. Furthermore, the enlarged surface area from graphene/CP nanohybrids can provide the improved interactions with target analytes, leading to the ultrasensitive sensing performance. | - |
dc.description.tableofcontents | 1. INTRODUCTION 1
1.1. Background 1 1.1.1. Conducting polymers 1 1.1.1.1. Polypyrrole (PPy) 3 1.1.1.2. Poly(3,4,- ethylenedioxythiophene) (PEDOT) 6 1.1.1.3. Polyfuran (PF) 7 1.1.1.4. Polyselenophene (PSe) 8 1.1.1.5. CP nanomaterials 9 1.1.1.5.1 1D CP nanomaterials 11 1.1.1.5.1.1 Self-degradation method 12 1.1.2. Graphene 13 1.1.3. Graphene/conducting polymer nanohybrid mateirals 16 1.1.3.1. Non-covalent graphene-CP nanohybrids 18 1.1.3.2. Covalent graphene-CP nanohybrids 26 1.1.4. Sensor application 28 1.1.4.1. Chemical sensor 30 1.1.4.1.1. Hazardous and toxic gases sensor 31 1.1.4.2. Liquid-ion gated FET-type biosensor 33 1.1.4.2.1. H2O2 FET-type biosensor 35 1.1.4.2.2. Glucose FET-type biosensor 37 1.1.4.2.3. Hg2+ FET-type biosensor 38 1.1.4.3. Piezotronic sensor 39 1.2. Objectives and Outlines 42 1.2.1. Objectives 42 1.2.2. Outlines 43 2. EXPERIMENTAL DETAILS 45 2.1. RGO/PPy NT hybrid materials 45 2.1.1. Fabrication of polypyrrole nanotube embedded reduced graphene oxide transducer for field-effect transistor-type H2O2 biosensor 45 2.1.1.1. Prepartation of PPy NTs 45 2.1.1.2. Prepratation of RGO/PPy NT hybrids 46 2.1.1.3. Fabrication of RGO/PPy NT composite FET sensor 47 2.1.1.4. Characterization of RGO/PPy NT hybrids 48 2.2. RGO/C–PPy NT hybrid materials 49 2.2.1. Fabrication of carboxylated polypyrrole nanotube wrapped graphene sheet transducer for field-effect transistor-type glucose biosensor 49 2.2.1.1. Preparation of C–PPy NTs 49 2.2.1.2. Preparation of RGO/C–PPy NT hybrids 50 2.2.1.3. Fabrication of RGO/C–PPy NT composites FET sensor 51 2.2.1.4. Characterization of RGO/C–PPy NT hybrids 52 2.3. RGO/PF NT hybrid materials 53 2.3.1. Fabrication of reduced graphene oxide-polyfuran nanohybrid for High-performance Hg2+ FET-type sensors 53 2.3.1.1. Prepration of PF NTs 53 2.3.1.2. Prepration of RGO/PF NT hybrids 54 2.3.1.3. Fabrication of RGO/PF NT composite FET sensor 55 2.3.1.4. Characterization of RGO/PF NT hybrids 56 2.4. RGO/PSe nanohybrid materials 57 2.4.1. Fabrication of graphene/polyselenophene nanohybrid materials for highly sensitive and selective chemiresistive sensor 57 2.4.1.1. Preparation of RGO/PSe nanohybrid materials 57 2.4.1.2. Characterization of RGO/PSe nano hybrid materials 58 2.5. CVD graphene/PEDOT/P(VDF-HFP) nanohbyrid mateirals 59 2.5.1. Prepatation of CVD graphene/free-standing PEDOT nanofiber/P(VDF-HFP) nanohbyrid materials 59 2.5.1.1. Prepatation of CVD graphene/free-standing PEDOT nanofiber/P(VDF-HFP) nanohbyrid materials 59 2.5.1.2. Characterization of CVD graphene/PEDOT/P(VDF-HFP) nanohybrid materials 61 3. RESULTS AND DISCUSSION 62 3.1. Fabrication of polypyrrole nanotube embedded reduced graphene oxide transducer for field-effect transistor-type H2O2 biosensor. 62 3.1.1. Fabrication of RGO/PPy NT hybrid materials 62 3.1.2. Electrical performance of RGO/PPy NT hybrid materials 70 3.1.3. FET-type H2O2 biosensor based on RGO/PPy NT hybrid materials 73 3.2. Fabrication of carboxylated polypyrrole nanotube wrapped graphene sheet transducer for field-effect transistor-type glucose biosensor 80 3.2.1. Fabrication of RGO/C–PPy NT hybrid materials 80 3.2.2. Electrical performance of RGO/C–PPy NT hybrid materials 88 3.2.3. FET-type glucose biosensor based on RGO/C–PPy NT hybrid material 91 3.3. Fabrication of reduced graphene oxide-polyfuran nanohybrid for High-performance Hg2+ FET-type sensors 100 3.3.1. Fabrication of RGO/PF NT hybrid materials 100 3.3.2. Electrical performance of RGO/PF NT hybrid materials 106 3.3.3. FET-type Hg2+ biosensor based on RGO/PF NT hybrid materials 110 3.4. Fabrication of graphene/polyselenophene nanohybrid materials for highly sensitive and selective chemiresistive sensor 117 3.4.1. Fabrication of RGO/PSe nanohybrid materials 117 3.4.2. Fabrication of chemiresistive sensor based on RGO/PSe nanohybrid materials 127 3.4.3. Chemiresistive sensing performance of the RGO/PSe nanohybrid film 130 3.5. Fabrication of graphene/free-standing nanofibrillar PEDOT/P(VDF-HFP) hybrid device for wearable and sensitive human motion detective piezo-resistive sensor 135 3.5.1. Fabrication of CVD graphene/free-standing nanofibrillar PEDOT/P(VDF-HFP) nanohbyrid devices 135 3.5.2. Sensing performance of E-skin device 143 3.5.3. Practical application of E-skin device 147 4. CONCLUSIONS 156 REFERENCES 162 국문초록 180 | - |
dc.format | application/pdf | - |
dc.format.extent | 11913629 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | Graphene | - |
dc.subject | conducting polymers (CP) | - |
dc.subject | nanohybrid materials | - |
dc.subject | Field-effect transistor (FET) | - |
dc.subject | sensor applications | - |
dc.subject.ddc | 660 | - |
dc.title | Fabrication of Graphene/Conducting Polymer Nanohybrid Materials and Their Sensor Applications | - |
dc.title.alternative | 그래핀/전도성 고분자 나노하이브리드 물질의 제조 및 센서로의 응용 | - |
dc.type | Thesis | - |
dc.contributor.AlternativeAuthor | Jin Wook Park | - |
dc.description.degree | Doctor | - |
dc.citation.pages | 181 | - |
dc.contributor.affiliation | 공과대학 화학생물공학부 | - |
dc.date.awarded | 2016-02 | - |
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