新科技领域.ppt

The Nobel Prize in Chemistry for 2000新科技領域生活相關物料(發光導電塑料-電視及流動電話螢光幕,太陽電池)運用基礎化學知識推理和分析連結到網頁連結到網頁http:/www.nobel.se/chemistry/laureates/2000/illpres/QuestionDraw the structure of acetylene(Given molecular formula:C2H2)Give the equation for the polymerization reaction of acetylene,and draw the structure of two repeating units for the polymer.Explain the terms conjugated polymer.Give two reasons that scientists suspect polyacetylene would conduct electricity.Give two reasons that conjugated polymer can be used in TV screens.State the potential use of conjugated polymer towards energy crisis.Draw the structure of acetylene(Given molecular formula:C2H2)H C C HGive the equation for the polymerization reaction of acetylene,and draw the structure of two repeating units for the polymer.n H-C=C-H -(-C=C)n H H HH C=C C=C H HExplain the terms conjugated polymer.Conjugated polymer means thepolymer consists carbon chain with C=C double bond andC-C single bond in alternatesequence.Give two reasons that scientists suspect polyacetylene would conduct electricity.(1)Polyacetylene so formed is a silvery film and shines like a metal.(2)The pi-electrons of C=C double bonds would delocalize into the C-C single bonds and hence could move freely through the whole carbon chain.Give two reasons that conjugated polymer can be used in TV screens.Conjugated polymer can be made as a semiconductor andConjugated polymer exhibits electro-luminescence,it glows when a voltage passes through.N.B.Conjugated polymers are the material that coated on the TV screen,no Cathode ray tube is necessary in this kind of TV.State the potential use of conjugated polymer towards energy crisis.Conjugated polymer can be used to make solar cells.Such devices are potentially useful to convert solar enery into electrical energy.信息遷移題型的功能挑選自學能力強的學生訓練思考和分析能力運用基礎化學知識引領學生和教師留意科技新領域生活實用知識