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光发光的超分子凝来自二氨酸化物

Kazuki Tateishi¹, Tomoya Tada¹, Taichi Sotani¹

¹Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University, 3-3-35 Yamate-cho, Suita, Osaka 564-8680, Japan. sanda@kansai-u.ac.jp.

|July 11, 2023

概括

二氨酸化物形成光发光的超分子凝. 氨盐结构对于凝至关重要,凝改变光色从蓝色到绿色,并通过模拟和光散射得到证实.

科学领域:

超分子化学超分子化学
材料科学是一种材料科学.
有机化学有机化学

背景情况:

超分子凝是多功能材料,在传感和药物输送方面具有应用.
二氨酸化物因其在创造新型超分子结构方面的潜力而受到探索.
了解凝机制是设计功能软材料的关键.

研究的目的:

为了研究新型二胺化物的凝性质.
为了描述由此产生的超分子凝的光发光行为.
阐明凝的结构要求和溶剂对性能的影响.

主要方法:

合成和表征N-(3,5-Diaminobenzoyl) -L-alanine dodecyl ester二化物 (1L) 的合成和表征.
用各种有机溶剂进行溶剂依赖凝研究.
光发光谱学 (紫外线的吸收和发射) 用于分析光学特性.
动态光散射 (DLS) 和分子动力学 (MD) 模拟以探测粒子大小和凝机制.
理论计算 (TD-DFT) 支持实验观察.

主要成果:

化合物1L在四基 (THF) 和 (CHCl3) 中成功形成了超分子凝,但在酒精,DMSO或DMF中没有.
凝在光中表现出明显的颜色变化,从sol状态的蓝色转变为凝状态的绿色.
与非凝溶剂相比,THF的吸收和排放最大值在红移,表明聚合引起的变化.
在1L的THF溶液中观察到直径约为13nm的液态动力学粒子.
无化类型 (1L') 不形成凝,突出显示了盐结构的必要性.
紫外线和光发光的数据显示在聚合后出现红移峰值,与理论计算一致.

结论:

二胺化的氨盐结构对于诱导超分子凝是必不可少的.
溶剂的选择显著影响凝的行为和光发光特性.
观察到的光学特性变化与分子聚合和超分子结构的形成有关.
这项研究提供了对基于二胺化物的光发光超分子凝的设计原理的见解.

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