高精度的深度学习模型与高通量选相结合,以发现具有优良综合性质的化[5,5]双双环能量材料
Youhai Liu1, Fusheng Yang1, Wenquan Zhang2
1School of Chemical Engineering and Technology, Xi'an Jiaotong University Xi'an 710049 China yang.fs@mail.xjtu.edu.cn.
RSC advances
|July 30, 2024
概括
研究人员开发了一种深度学习模型,以加快新能源材料的发现. 这种方法成功地确定了一种具有高能量和热稳定的有前途的化合物,其性能优于传统方法.
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:
- 发现高性能能量材料至关重要,但由于低效的试错方法而受到阻碍.
- 新型化[5,5]双环化合物具有作为先进能量材料的潜力.
研究的目的:
- 建立一个高效的深度学习模型来预测能量材料性能.
- 为了加快新型化[5,5]双环能量材料的发现.
主要方法:
- 开发一个定向消息传递神经网络模型,用于准确预测材料属性.
- 将深度学习模型与高通量选集成,以快速识别候选人.
- 使用密度函数理论 (DFT) 计算对预测属性的验证.
主要成果:
- 深度学习模型证明了对能量材料的高预测准确性.
- 高通量选有助于快速发现有希望的化[5,5]双环化合物.
- DFT计算证实了已识别的分子的预测性能,包括6,7-trinitro-3H-pyrrolo[1,2-b][1,2,4]triazo-5-amine.
结论:
- 深度学习与高通量选相结合,为发现有能量材料提供了一种有效的策略.
- 已识别的化合物,6,7-trinitro-3H-pyrrolo[1,2-b][1,2,4]triazo-5-amine,表现出有利的引爆特性和热稳定性.
- 这种方法显著提高了寻找具有理想综合性能的高能材料的效率.
相关概念视频
02:13Energy Diagrams, Transition States, and Intermediates
Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction coordinate represented on the horizontal axis shows how far the reaction has progressed structurally. Positions along the x-axis close to the reactants have structures resembling the reactants, while positions close to the products resemble the products. Peaks on the energy diagram represent stable structures with measurable lifetimes, while other...
01:27Inductive Effects on Chemical Shift: Overview
The protons in unsubstituted alkanes are strongly shielded with chemical shifts below 1.8 ppm. Methine, methylene, and methyl protons appear at approximately 1.7, 1.2 and 0.7 ppm, while the proton signal from methane appears at 0.23 ppm. An electronegative substituent, such as chlorine, withdraws the electron density from the protons, increasing their chemical shift. Progressive substitution of the hydrogens in methane by chlorine shifts the proton signals increasingly downfield, to 3.05 ppm in...
01:17Thermal Electrocyclic Reactions: Stereochemistry
The stereochemistry of electrocyclic reactions is strongly influenced by the orbital symmetry of the polyene HOMO. Under thermal conditions, the reaction proceeds via the ground-state HOMO.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
Selection Rules: Thermal Activation
Conjugated systems containing an even number of π-electron pairs undergo a conrotatory ring closure. For example, thermal electrocyclization of (2E,4E)-2,4-hexadiene, a conjugated diene containing two π-electron pairs, gives trans-3,4-dimethylcyclobutene.
01:26Photochemical Electrocyclic Reactions: Stereochemistry
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
01:16Potential-Energy Criterion for Equilibrium
Potential energy or potential function plays an essential role in determining the stability of a mechanical system. If a system is subjected to both gravitational and elastic forces, the potential function of the system can be expressed as the algebraic sum of gravitational and elastic potential energy. If the system is in equilibrium and is displaced by a small amount, then the work done on the system equals the negative of the change in the system's potential energy from the initial to the...
01:21Mass Spectrometry: Complex Analysis
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...