可解释的多模态图形学习平台,用于AIEgens的理性设计:从分子结构和微环境到光物理性质
Xue-Wei Zhang1, Gong-Xiang Qi2, Yu Han1
1Department of Chemistry, College of Sciences, Beihua University, Jinlin 132013, China.
ACS sensors
|February 5, 2026
概括
这项研究介绍了GATM,这是一种深度学习模型,通过分析分子结构和溶剂环境来预测聚合诱导排放光原体 (AIEgens) 的特性. 该模型可以为AIEgens准确设计,用于诸如杀虫剂检测等应用.
科学领域:
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
- 计算化学的计算化学
背景情况:
- 聚合诱导排放发光剂 (AIEgens) 在材料科学中具有巨大的潜力.
- 在AIEgens中阐明结构-属性关系受到数据分散和复杂的相关性阻碍.
- 传统的机器学习模型对AIEgen数据缺乏解释性.
研究的目的:
- 开发一个数据驱动的,可解释的深度学习模型 (GATM) 来预测AIEgen属性.
- 解读分子结构,溶剂环境和光物理性质之间的复杂关系.
- 为了实现功能性AIEgens的合理设计和反向设计.
主要方法:
- 构建了一个多式预测框架 (GATM),集成图形神经网络和机器学习.
- 利用多来源数据,包括分子结构,光物理参数和溶剂环境.
- 采用图表注意网络 (GAT) 来可视化溶剂-溶液相互作用并分析特征的重要性.
主要成果:
- 对于关键的AIEgen参数,GATM实现了高预测准确度 (平均R2>0.90).
- 该模型准确地预测了光寿命,量子产量和光谱特性.
- 合成的AIEgens在农药检测和区分方面表现出高精度 (100%),检测极限低 (0.4nM).
结论:
- GATM模型为AIEgens的理性设计提供了一个新的范式.
- 可解释的深度学习方法有助于理解AIEgen发光机制.
- 这个平台通过智能预测和反向设计加速了新功能材料的开发.
相关概念视频
02:34Molecular Structure and Acidity
21.5K
An acid can be deprotonated to form a conjugate base or an anion. If the produced anion is more stable, then the acid is stronger. On the contrary, if the anion is unstable, then the acid is weaker. Hence, to determine the acidity of the compound, the stability of its conjugate base is studied using various factors.
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
The size effect explains the change in atomic size on acidity. When comparing the acids formed from elements that belong to the same column in the periodic table, their atomic sizes...
21.5K
01:21Structural Properties and Dimensions of Lumber
406
Wood's structural properties derive from fibers aligned along the tree's length, contributing significantly to its mechanical strength. Wood exhibits up to twenty times greater tensile strength along these fibers compared to across them, and generally shows better performance under compression than tension. The length of fibers varies, with hardwoods having fibers around one twenty-fifth inch long and softwoods ranging from one-eighth to one-third inch.
The strength characteristics of...
The strength characteristics of...
406
02:37Structure and Physical Properties of Alkynes
13.4K
Introduction:
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
In nature, compounds containing both carbon and hydrogen are known as "hydrocarbons". Aliphatic hydrocarbons are compounds whose molecules contain saturated single bonds (i.e., alkanes) or unsaturated double or triple bonds. Alkenes contain carbon–carbon double bonds and have a structural formula CnH2n. Unsaturated hydrocarbons containing carbon–carbon triple bonds are called "alkynes" and are structurally represented by the formula CnH2n-2.
The...
13.4K
02:34Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules
37.5K
The test of the kinetic molecular theory (KMT) and its postulates is its ability to explain and describe the behavior of a gas. The various gas laws (Boyle’s, Charles’s, Gay-Lussac’s, Avogadro’s, and Dalton’s laws) can be derived from the assumptions of the KMT, which have led chemists to believe that the assumptions of the theory accurately represent the properties of gas molecules.
37.5K
03:05Acid Strength and Molecular Structure
33.1K
Binary Acids and Bases
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
In the absence of any leveling effect, the acid strength of binary compounds of hydrogen with nonmetals (A) increases as the H-A bond strength decreases down a group in the periodic table. For group 17, the order of increasing acidity is HF < HCl < HBr < HI. Likewise, for group 16, the order of increasing acid strength is H2O < H2S < H2Se < H2Te. Across a row in the periodic table, the acid strength of binary hydrogen compounds increases with increasing...
33.1K
02:54Lewis Structures of Molecular Compounds and Polyatomic Ions
45.4K
To draw Lewis structures for complicated molecules and molecular ions, it is helpful to follow a step-by-step procedure as outlined:
45.4K