多孔有机的深度生成设计通过一个变化的自编码器
Jiajun Zhou1, Austin Mroz1, Kim E Jelfs1
1Department of Chemistry, Molecular Sciences Research Hub, Imperial College London White City Campus, Wood Lane London W12 0BZ UK k.jelfs@imperial.ac.uk.
概括
研究人员开发了Cage-VAE,这是一个深度学习模型,用于设计形状持久的多孔有机 (POC). 这种人工智能方法克服了在为气体储存和分离等应用程序创建稳定的POC方面的挑战.
科学领域:
- 材料科学 材料科学 材料科学
- 计算化学计算化学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 多孔有机 (POC) 是具有可调节多孔性的分子材料,适用于客户的储存和分离.
- POCs通过动态共价化学合成,提供了广大的化学空间,但面临着形状持久性的挑战.
- 由于溶剂去除时子塌而导致的多孔性损失限制了POC应用.
研究的目的:
- 开发一种用于设计形状持久多孔有机的计算方法.
- 为应对确定适合用于稳定的POC合成的分子前体的挑战.
- 为了利用生成机器学习,针对功能分子材料的有针对性的设计.
主要方法:
- 实施一个名为Cage-VAE的深度学习生成模型.
- 将Cage-VAE与贝叶斯优化和球形线性插值等采样方法集成.
- 新型多孔有机结构的计算设计和生成.
主要成果:
- 通过使用Cage-VAE模型成功生成了新的,形状持久的多孔有机.
- 证明Cage-VAE能够提出可行的POC结构,并保留多孔性的能力.
- 验证AI模型在探索POC前体的化学空间方面的有效性.
结论:
- -VAE模型提供了一个强大的工具,用于定向设计形状持久的POC.
- 这种深度学习方法有助于发现具有增强功能特性的新材料.
- 人工智能驱动的设计加速了各种应用的先进多孔材料的开发.
相关概念视频
Design Example: Creating a Hydraulic Model of a Dam Spillway
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
Design Example: Forces in Sluice Gate
In hydraulic engineering, sluice gates are essential for managing water flow through channels, reservoirs, and irrigation systems. Sluice gates, acting as vertical barriers, regulate water by adjusting the gate's opening height, which changes the velocity and pressure of water flowing beneath the gate. Understanding the forces involved is crucial to designing sluice gates that can withstand dynamic pressure differences, especially when the gate is closed or partially open.
Key variables in...
Key variables in...
Sequence Networks of Rotating Machines
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
Mechanistic Models: Overview of Compartment Models
Mechanistic models, a category encompassing both physiological and compartmental modeling, differ from empirical models' approaches to incorporating known factors about the systems being modeled. Empirical models describe data with minimal assumptions, while mechanistic models aim to provide a robust description of available data by specifying assumptions and integrating known factors about the system. Compartmental analysis is a key example of a mechanistic model in pharmacokinetics and...
Design Example: Aggregate Gradation
The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is sampled...
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is sampled...
Regioselective Formation of Enolates
As depicted in the figure below, the unsymmetrical ketones can form two possible enolates: less substituted or more substituted enolates. Usually, the thermodynamic enolates are formed from the more substituted α-carbon atom, while the kinetic enolates are formed faster by deprotonation from the less substituted position. The thermodynamic enolates have lower energy, so they are more stable. But the energy required to form kinetic enolates is less.


