Controlled Synthesis of Inorganic Polymers by the Use of Multibilayr Cast Films as Molecular Template.

使用多层流延膜作为分子模板控制无机聚合物的合成。

• 批准号: 04555221
• 负责人: KUNITAKE Toyoki
• 金额: $ 11.2万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-04555221/
• 关键词: Bilayr Membrane; Cluster; Quantum Size Effect; Mixed Valence; クラスタ-; 磁気異方性; 励起子; 鉛ハライド

Quantum-sized CdS particles are prepared by reaction of H_2S gas with CdCl_2-cyclam complexes preorganized in cast multibilayr films. The particle size is affected by the chemical structure of the bilayr component as well as by the physical state of the matrix. Neutral CdS particles are stabilized seemingly by physical adsorption of protonated cyclam head groups, and the bilayr surface does not act as a template that can define guest structures. On the other hand, in the case of an ammonium bilayr-CdBr_3^- composite film, one S is introduced per four Cd^<2+> ions without substantial changes in the coordination structure, suggesting the formation of a novel Cd-Br-S cluster.Lead halide clusters are formed by ion exchange of counterions of an ammonium cast film with PbBr_4^<2-> through dipping. The ion-exchanged cast film that maintains the regular layr structure displays electronic absorption at wavelength shorter than that of the 2D-cross-linked perovskite structure(PbI_4^<2-> cluster). This suggests that PbBr_4^<2-> clusters of lesser dimensions(linear of dot-shaped) are formed due to imbalance of the molecular area with that of the ammonium bilayr.

通过H_2S气体与预制成多层膜的氯化镉-环糊精络合物反应，制备了量子尺寸的硫化镉颗粒。颗粒大小受双层组分的化学结构以及基质的物理状态的影响。中性的硫化镉颗粒似乎是通过质子化的环状头基的物理吸附来稳定的，并且双层表面不起到定义客体结构的模板的作用。另一方面，对于双层氯化镉复合薄膜，在配位结构没有发生实质性变化的情况下，每四个Cd^&lt；2+&gt；离子中引入一个S离子，这意味着形成了一个新的Cd-Br3+-S簇合物。保持规则层状结构的离子交换铸膜层的电子吸收波长比二维交联型钙钛矿结构(PbI_4^&lt；2-&gt；)的短。这表明PbBr4^&lt；2-&gt；形成较小尺寸的团簇(线状或点状)是由于分子面积与双分子层的面积不平衡所致。

项目成果

N.Kimizuka et al: "Preparation of a Self-Supporting, Multilayred Film of Montmorillonite." Chem.Lett.476-479 (1993)

N.Kimizuka 等人：“自支撑多层蒙脱土薄膜的制备”。

T.Kunitake et.al.: "Template‐Sythesis of Dimension‐Diminished Lead Halide Clustevs at the Interlayer of Multibilayer Cast Film" Chemistry Letters. 941-944 (1993)

T.Kunitake 等人：“多层流延薄膜夹层中尺寸减小的卤化铅簇的模板合成”化学快报 941-944 (1993)。

T.Kunitake et.al.: "Preparation of a Self-Supporting,Multilayered Film of Montmorillonite" Chemistry Letters. 476-479 (1993)

T.Kunitake 等人：“蒙脱土自支撑多层薄膜的制备”化学快报。

君塚信夫,国武豊喜: "有機分子集合体を用いた無機物の構造制御" 化学. 48. 730-731 (1993)

Nobuo Kimizuka、Toyoshi Kunitake：“使用有机分子聚集体控制无机材料的结构”化学 48. 730-731 (1993)。

T.Kunitake et.al.: "Spectral characteristics of low-dimensional PbBr_4 clusters prepared by the use of multibilayer cast films" Proceedings of the 3rd IUMRS-International conference on Advanced Materials. (印刷中). (1994)

T.Kunitake 等人：“使用多层流延薄膜制备的低维 PbBr_4 簇的光谱特征”第三届 IUMRS 国际先进材料会议记录（1994 年）。