具有成本效益的多通道MolOrb图像用于实用的光功能的材料的机器学习激发状态属性
Ziyong Chen1, Jonathan Lam1,2, Vivian Wing-Wah Yam1,2
1Institute of Molecular Functional Materials and Department of Chemistry, The University of Hong Kong, Hong Kong 999077, P. R. China.
Journal of chemical theory and computation
|January 26, 2026
概括
我们开发了一种更快的方法,用多通道分子轨道图像 (MolOrbImage) 来预测光功能材料的兴奋状态能量. 这种方法显著降低了计算成本,同时保持了材料发现的高精度.
科学领域:
- 计算化学是一种计算化学.
- 材料科学是一种材料科学.
- 量子化学是一种量子化学.
背景情况:
- 预测激发状态能量对于光功能材料至关重要.
- 传统方法的高计算成本限制了高通量发现.
- 多通道分子轨道图像 (MolOrbImage) 是一个有前途的方法.
研究的目的:
- 开发一种具有成本效益的方法来预测激发状态能量.
- 为了克服平均场基态计算的计算局限性.
- 为了实现新型光功能材料的高通量发现.
主要方法:
- 嵌入到MolOrbImage中的洞和粒子信息.
- 采用了低成本的轨道生成技术 (原子密度的叠加,半经验紧密结合).
- 利用卷积神经网络进行预测和扰动分析.
主要成果:
- 对小型有机分子 (MAE < 0.1 eV) 实现了高精度.
- 对于实际的光功能材料 (MAE < 0.14 eV) 证明了准确性.
- 确定了前沿轨道能量作为关键预测因素.
结论:
- 开发的方法显著降低了用于激发状态能量预测的计算成本.
- MolOrbImage与CNNs相结合,对小分子和复杂材料都有效.
- 转移学习可以进一步提高预测的准确性.
相关概念视频
Machines
563
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
A free-body diagram of the...
563
Ion Channels
91.3K
The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange.
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
Ion channels are specialized integral membrane proteins on the plasma membrane that allow...
91.3K
Machines: Problem Solving II
654
Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
654
Machines: Problem Solving I
702
A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
702
Properties of Transition Metals
29.7K
Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.
29.7K
Avoidance Learning and Learned Helplessness
2.5K
Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
2.5K


