黃炳綜 輔仁大學化學系
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Transcript of 黃炳綜 輔仁大學化學系
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Organic Semiconducting Materials Research Lab. Department of Chemistry Fu-Jen Catholic University
黃炳綜
輔仁大學化學系
November 17, 2011
材料的世界
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1. Motivation for the material research- problem solving
2. Requirements for material research- fundamental theory- material preparation- characterization skill- application
3. Materials
4. Conclusions
Outline
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Materials’ world1. Organic materials
- gas- gasoline- wax- plastic- fiber (bullet-proof vest)- CNT, graphite, C60
2. Conducting polymers- antistatic coating- polymer light-emitting diodes- polymer solar cells- electrochromic windows
3. Nanomaterials
4. Biomaterials- biomarker- cancer therapy (chemotherapy such as porphyrin)
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Hydrocarbon materials
C C C
H
H
H
H
H
H
H
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Increased Mw
Morphology of alkanes
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Carbon NanoTube Graphene Fullerene (C60,C67,…)
The world of Carbon
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Some Novel Attributes of Grapheneref: J. Phys. Chem. Lett. 2010, 1, 572–580
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Semi-conducting Polymers
1. Anti-static coating2. Light-emitting diodes3. Organic solar cells4. Electrochromic Windows5. Organic Thin Film Transistor6. Radio Frequency Identification Device7. ………
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PLED vs LCD Display
COLOUR FILTER
BACKLIGHT
PLED Display
PolarizerGlass
ITO
Electrode
Seal
Glass
OrganicLayer
LCD Display
Polarizer Liquid Crystal
Glass
ITO
ITOSeal
PolarizerColor Filter
ProtectionGlass
AlignmentLayer
Spacer
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Product Features
Nobacklight(1.65mmthin)
Slimproduct
Lesscost
Moreflexibledesign
Fast response time(1000 times fasterthan LCD)
Bestvideorendition
Bestgameplayingexperience
Nomotionblur
Highcontrast(> 100:1)
Ultrasharpimages
Greatest visibilityEyeappeal-ing
Benefits
Benefits of OLED
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Product Features
Wideviewingangle
(>170o)
Isotropic visibilityEasier to sharephotos, images &information
Onecolorfor allangles
Self-emittingLifelikecolorrepro-duction
Queen ofthe night
Dazzling
Wideoperationtemperature
(-40oC ~ 70oC )
Same performanceat all temperature
Boundarylessusage No need for heater
when operating atlow temp.
Benefits
Benefits of OLED
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A solar cell is a device that convert solar energy into electricity.
solar cell
solar array
solar module
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Structure of Polymeric Solar Cell:1. anode (ITO,PEDOT, Pani…..)
2. donor-acceptor [ light-harvesting materials (donor, p-type)+ electron acceptor (acceptor, n-type) ]
3. cathode (Al, LiF, Ca, Ba……)
Polymeric solar Cell
active layer
PEDOT-PSS
Si solar cell
(P-type)
(N-type)
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Electrochromic behavior of Polyaniline
2A→2S = Green → Blue
Green Blue
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An electrochromic window based on polyaniline / Tungsten oxide
(b) colored
(a) bleached
transparent blue
cations (M+, eg H+); anions (A-, eg HSO4-)
(a) bleached
(b) colored
30cm*30cm30cm*30cm
Electrochimica Acta, 37, 1377, 1992.Source: J.-M. Yeh, CYCU
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Potential cycling of P(3HT-co-3TPP)-silica hybrid materials and P3HT coated on ITO electrode
reduced form oxidized form
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* Use of red, blue, and green ECPs in work from Sonmez et al. The different colors areobtained using mixtures of the polymers and by switching them between their two redox states
* Spectroelectrochemistry of a thin film of blue ECP. The inset shows the variety of hues produced on application of various biases as reported by Sonmez et al.
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* Prototype of smart sunglasses as constructed by Xu et al. A cell battery powers the switching process from (a) a deeply colored state to (b) a fully transparent state. (Ma, C.; Taya, M.; Xu, C. Polym. Eng. Sci. 2008, 48, 2224.)
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何謂『奈米科技』?•奈米科技」乃只製造奈米( 10-9 m )尺度的功能材料、元件、或系統, 並研究其特殊物理、化學、生物方面的特性與應用。•費因曼( R. Feynman )曾預言:「在極小(奈米)的領域裡有極大
(發 揮)的空間( 1959 )。」•隨著年代 STM (穿隧掃瞄顯微鏡)、 AFM (原子力顯微鏡)、與各種
電子顯微鏡的發展,提供奈米科技所需的「眼睛」與「手指」。
原子直徑:0.2 奈米
DNA 直徑:2.5 奈米
生物細胞:1 千奈米
針孔痕:1 百萬奈米
身高:18 億奈米
(Research and Perspective of Nanotechnology 2000)
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Nanopatterning
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Self-healing materials
J. Chem. Edu.
The autonomic-healing concept. A microencapsulated healing agent is embedded in a structural composite matrix containing a catalyst capable of polymerizingthe healing agent. i: Cracks form in the matrix wherever damage occurs;ii: the crack ruptures the microcapsules, releasing the healing agent into the crack plane through capillary action;iii: the healing agent contacts the catalyst, triggering polymerization that bonds the crack faces closed.
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Photolithagraphy (am nm)
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Conclusions
1. Prepare yourself to meet the challenge.2. Refresh yourself to create novel idea.3. Be yourself to do what you like.
Conclusions
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