刺激响应的π-结合聚合物显示固态发射基于-化亚甲复合物与NNO-三酸联体
Misato Kanjo1, Masayuki Gon1, Kazuo Tanaka1
1Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
ACS applied materials & interfaces
|June 22, 2023
概括
具有融合亚甲 (BAm) 结构的新型发光聚合物表现出刺激反应性质. 这些材料的功能是可适应的膜传感器,显示可逆的颜色变化,以响应酸蒸气和溶剂蒸气.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 有机电子 有机电子
背景情况:
- 响应刺激的材料对于先进的传感器技术至关重要.
- π结合的聚合物具有可调节的电子和光学特性.
- 合亚甲 (BAm) 结构为功能性材料设计提供了独特的机会.
研究的目的:
- 开发一种新型的响应刺激的发光型 π 结合聚合物.
- 为了研究BAm基聚合物的酸和蒸汽反应发光.
- 为了证明这些聚合物的应用在薄膜类型传感器和透性评估中.
主要方法:
- 合成包含融合亚甲 (BAm) 结构和NNO-三酸连接体的π结合聚合物.
- 制造用于传感应用的聚合物薄膜和双层薄膜.
- 发光性质的表征和对酸蒸气和溶剂蒸气 (例如,) 的反应.
- 评价膜的蒸发色发光和溶剂-蒸汽透性.
主要成果:
- 聚合物在发射波长中表现出响应酸的红移,由于去质子化而导致可逆响应.
- 由于环境敏感性,在膜状态中观察到独特的发光色彩变化.
- 双膜在化蒸汽回火时显示了蒸色发光 (色→黄色→绿色),取决于曝光时间.
- 观察到的变化被成功地应用于评估膜的溶剂-蒸汽透性.
结论:
- 在有机化合物中的替代是一种有效的策略,用于创建刺激响应材料.
- 基于BAm的聚合物显示出在先进的薄膜传感器中应用的巨大潜力.
- 开发的材料提供了一种新的方法来监测环境刺激和材料特性,如蒸汽透性.
更多相关视频
相关概念视频
01:26Photochemical Electrocyclic Reactions: Stereochemistry
1.9K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.9K
01:11Aryldiazonium Salts to Azo Dyes: Diazo Coupling
3.0K
The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
3.0K
01:14Photoluminescence: Applications
440
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
440
01:26Variables Affecting Phosphorescence and Fluorescence
546
Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
546