黃炳綜輔仁大學化學系

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

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

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)

Hydrocarbon materials

C C C

H

H

H

H

H

H

H

Increased Mw

Morphology of alkanes

Carbon NanoTube Graphene Fullerene (C60,C67,…)

The world of Carbon

Some Novel Attributes of Grapheneref: J. Phys. Chem. Lett. 2010, 1, 572–580

Semi-conducting Polymers

1. Anti-static coating2. Light-emitting diodes3. Organic solar cells4. Electrochromic Windows5. Organic Thin Film Transistor6. Radio Frequency Identification Device7. ………

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

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

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

A solar cell is a device that convert solar energy into electricity.

solar cell

solar array

solar module

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)

Electrochromic behavior of Polyaniline

2A→2S = Green → Blue

Green Blue

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

Potential cycling of P(3HT-co-3TPP)-silica hybrid materials and P3HT coated on ITO electrode

reduced form oxidized form

* 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.

* 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.)

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)

Nanopatterning

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.

Photolithagraphy (am nm)

Conclusions

1. Prepare yourself to meet the challenge.2. Refresh yourself to create novel idea.3. Be yourself to do what you like.

Conclusions

黃炳綜 輔仁大學化學系

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黃炳綜輔仁大學化學系