在本論文中，合成一系列單官能性單體，依結構分為液晶元單體、光致變性單體及光學活性單體，其中光學活性單體是將末端導入不同的立體障礙基團結構，分別有異戊醇基(Amyl)，膽固醇基(Cholesteryl)及薄荷醇基(Menthyl)三種；再利用自由基聚合合成側鏈型液晶高分子( SCLCP)，得到均聚聚合物與共聚合物，所合成的聚合物為液晶高分子或非結晶型高分子。

　　所合成出來的化合物與高分子均使用紅外線光譜(FT-IR)、質子核磁共掁光譜( 1H-NMR)與元素分析儀( EA)來鑑定其化學結構，利用微差掃描熱卡計(DSC)及熱重量分析儀( TGA)對高分子的熱性質分析，之後再利用偏光顯微鏡( POM)及X光繞射儀( X-ray)觀察高分子液晶相紋理及其微結構排列，並利用膠體滲透層析( GPC)量測高分子之分子量及分子量分佈(PDI)。在本實驗所合成含光學活性共聚物，其液晶相均為層列型( Smectic)高分子液晶，而均聚物均為向列型( Nematic)高分子液晶，在起始劑3 mol%條件下，所合成的聚合物之數目平均分子量約在104以上，均聚物及共聚物10 wt%熱重損失皆可達到380℃以上，因此為一良好之耐熱材料。

　　本研究中，將所合成的光學活性化合物與市售液晶E7或ZLI-2293摻混能有效誘導出膽固醇型液晶，並且適當調配比例可在可見光區域具有選擇性光反射現象；再將具有光敏性基團的光學活性化合物2,5-Bis(cinnamoyloxy)- 1,4;3,6-dianhydro-D-glucitol添加入ZLI-2293及R811系統中，能有效的誘導至反射波長為藍色區域，並經由照UV光使C=C雙鍵行光異構化反應，經由分子構型的改變影響整體液晶排列，使得選擇性光反射波長可移動至紅光位置，由此結果顯示出，加入之光學活性摻混物對液晶有顯著的影響，因此可在膽固醇型液晶薄膜經由光罩透過紫外光的照射可得到RGB全彩影像。

　　A series of functional monomers with mesogenic, photochromic, and steric hindered chiral groups was synthesized. The steric hindered amyl, cholesteryl and menthyl groups were introduced into the monomers. Both liquid crystalline and amorphous polymers were synthesized through free radical polymerization. The synthesized monomers and polymers were confirmed using 1H-NMR, FTIR and elemental analysis. Thermal properties of polymers were studied using DSC and TGA thermometers. The liquid crystal texture and its phases were investigated using X-ray diffraction analyzer, crossed polarized optical microscopy and were further confirmed from DSC charts. Molecular weight was estimated using gel performance chromatography (GPC). Synthesized chiral copolymers were found to be Smectic A, and the homopolymers were all nematic liquid crystalline polymers. Molecular weight of polymers were all higher than 104 and revealed high thermal resistance. The chiral compounds were used as dopants to induce the cholesteric phase from the nematic phase. Addition of chiral compound A synthesized in this investigation was found to induce a blue shift of reflective band of cholesteric liquid crystal cell. UV irradiation caused an E/Z photoisomerization at C=C segment leading to a red shift. The recording of real images was performed through a mask with patents and words.

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