Asymmetric Photoprocesses in Chiral Biopolymer Matrices and Possible Application to Chiroptical Photorecording

手性生物聚合物基质中的不对称光过程及其在手性光学光记录中的可能应用

• 批准号: 63470095
• 负责人: SISIDO Masahiko
• 金额: $ 3.26万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63470095/
• 关键词: Polypeptide; Helix; Circular Dichroism; Optical Rotation; Photocontrol; Photoisomerization; Bilayer Membrane; Aromatic Amino Acids; 光記録材料; アゾベンゼン; 生体高分子; 記録材料; 磁場配向; 液晶; ゲル

Photochromic groups, such as azobenzene, were linked directly to helical polvpeptide chain with different spacinas between the chromophores. The polypeptides showed large circular dichroism (CD), its intensity being dependent on the spatial arrangement of the photochromic groups. The CD and the optical rotation were changed by photoirradiation. This phenomena can be a basis for a novel chiroptical photorecording, because the memory can be read out at longer wavelengths than those for writing processes. Similarly, Belayer membranes consisting of aromatic amino acids were newly synthesized. The membranes showed strong CD and optical rotation, and those containing azobenzene groups showed reversible change of CD and optical rotation under photoirradiation. Therefore, these materials are also an excellent candidate for the chriotical photorecording.

偶氮苯等光致变色基团直接连接到螺旋多肽链上，发色团之间具有不同的间距。多肽显示出大的圆二色性（CD），其强度依赖于光致变色基团的空间排列。光照射改变了CD和旋光度。这种现象可以成为一种新型手握光学光记录的基础，因为这种存储器可以在比写入过程更长的波长下读出。类似地，新合成了由芳香族氨基酸组成的Belayer膜。该膜具有较强的圆二色性和旋光性，含偶氮苯基团的膜在光照下呈现出圆二色性和旋光性的可逆变化。因此，这些材料也是一个很好的候选人的光学记录。

项目成果

稲井嘉人,宍戸昌彦,今西幸男: "Excimer Formation on a Polypeptide Carrying Two Pyrenyl Groups in the Middle of an α-Helical Main Chain" J.Phys.Chem.(投稿中).

Yoshito Inai、Masahiko Shishido、Yukio Imanishi：“α-螺旋主链中部携带两个芘基的多肽上的准分子形成”J.Phys.Chem.（进行中）。

T. Hiraga, N. Kitamura, H-B. Kim, S. Tazuke, and N. Mori: "Pressure and Temperature Effects on the Excited Stae of the Tris(2, 2-bipyridine)ruthenium(II) Complex" J. Phys. Chem. 93(15), 2940-2945 (1989).

T. Hiraga，N. Kitamura，H-B。

宍戸昌彦,佐藤靖彦,佐々木広樹,今西幸男: "Synthesis,Structure,and Excimer Formation of Vesicular Assemblies Carrying 1-or2-Naphthyl Chromophores" Langmuir. 6. 177-182 (1990)

Masahiko Shishido、Yasuhiko Sato、Hiroki Sasaki、Yukio Imanishi：“携带 1-或 2-萘基发色团的囊泡组件的合成、结构和准分子形成”Langmuir。

宍戸昌彦: "Synthesis,Conformation,and Chiroptical Spectroscopy of Poly〔Lys(Z)_2pyrAla〕in Solution" Macromolecules. 22. 3280-3285 (1989)

Masahiko Shishido：“溶液中聚〔Lys(Z)_2pyrAla〕的合成、构象和手性光谱” 22. 3280-3285 (1989)。

M. Sisido: "A Helical Array of Anthryl Groups along a Polypeptide Chain" Macromolecules, 22(11), 4367-4372 (1989).

M. Sisido：“沿着多肽链的蒽基螺旋阵列”《大分子》，22(11), 4367-4372 (1989)。