Preparation of soild cholesteric films from biomaterials and usage of their optical performances

生物材料固体胆甾醇薄膜的制备及其光学性能的应用

• 批准号: 11555252
• 负责人: WATANABE Junji
• 金额: $ 4.74万
• 依托单位: TOKYO INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555252/
• 关键词: biopolymer; polypeptide; cellulose; cholesteric liquid crystal; helical structure; liquid crystal glass; phase matching of light; optical filter; らせん構造; 円偏光二色性; 光学活性; カラーフィルム; 選択反射

In this study, we have prepare the cholesteric liquid crystals based on the biomaterials, polypeptide, cellulose and chitin. It has been reallized that these biomaterials can form only the lyotropic liquid crystals, but our present study indicates that they can also form the thermotropic cholesteric liquid crystals if they are modified chemically on the side chains. Thermotropic liquid crystals are very convenient to prepare the cholesteric glasses with the macro-helical structure, since they can be easily prepared by quenching the cholesteric liquid crystals. In these films, the uniform cholesteric domain structures with the helical axis lying perpendicular to the film surface and with different helical pitches from 200 nm to the infinite were easily prepared. The optical properties of these fine cholesteric solids were widely studied and their application was considered as specific optical filter, optical compensator, and etc.

在本研究中，我们以生物材料、多肽、纤维素和几丁质为原料制备了胆甾类液晶。人们认识到这些生物材料只能形成热致性液晶，但我们目前的研究表明，如果在侧链上进行化学修饰，它们也可以形成热致性胆甾液晶。热致液晶是制备具有宏观螺旋结构的胆甾体玻璃非常方便的方法，因为它可以通过对胆甾体液晶进行淬火来制备。在这些薄膜中，可以很容易地制备出螺旋轴垂直于薄膜表面、螺旋节距从200 nm到无限长的均匀胆甾畴结构。人们对这些精细胆甾固体的光学性质进行了广泛的研究，并考虑将其应用于特定的滤光片、光学补偿器等方面。

项目成果

渡辺順次、他4名: "コレステリック液晶の固定化によるカラーフィルムI"色材. 72. 581-589 (1999)

Junji Watanabe 等 4 人：“通过固定胆甾型液晶的彩色胶片 I”彩色材料。

Koichi Sakajiri,Satoshi Saeki,Susumu Kawauchi and Junji Watanabe: "Conformational Analysis by IR and Birefringence Measurements for Poly(b-phenylpropyl L-aspartate) Exhibiting a Helical Sense Inversion in the Solid State"Polymer J.. 32. 803-806 (2000)

Koichi Sakajiri、Satoshi Saeki、Susumu Kawauchi 和 Junji Watanabe：“通过红外和双折射测量对固态中表现出螺旋方向反转的聚（b-苯基丙基 L-天冬氨酸）进行构象分析”Polymer J.. 32. 803-806（

Koichi Sakajiri, Satoshi Saeki, Susumu Kawauchi and Junji Watanabe: "Conformational Analysis by IR and Birefringence Measurements for Poly(b-phenylpropyl L-aspartate)Exhibiting a Helical Sense Inversion in the Soild State"Polymer J.. 32. 803-806 (2000)

Koichi Sakajiri、Satoshi Saeki、Susumu Kawauchi 和 Junji Watanabe：“通过红外和双折射测量对在固态下表现出螺旋方向反转的聚（b-苯基丙基 L-天冬氨酸）进行构象分析”Polymer J.. 32. 803-806（

Junji Watanabe 他4名: "Distinct temperature dependence of cholesteric pitches in lyotropic cholesteric liquid crystals of polypeptide"Polymer J.. 31. 199-202 (1999)

Junji Watanabe 等 4 人：“多肽溶致胆甾液晶中胆甾沥青的独特温度依赖性”Polymer J.. 31. 199-202 (1999)

H.Kosho,S.Hiramatsu,T.Nishi,Y.Tanaka and J.Watanabe: "Thermotropic cholesteric liquid crystals in ester derivatives of hydroxypropylcellulose"High Perfom.Polym.. 11. 41-48 (1999)

H.Kosho、S.Hiramatsu、T.Nishi、Y.Tanaka 和 J.Watanabe：“羟丙基纤维素酯衍生物中的热致胆甾型液晶”High Perfom.Polym.. 11. 41-48 (1999)