利用动态密度泛函(Dynamic density functional theory,DDFT)方法研究了三维受限下嵌段共聚物的微观相分离,讨论了共聚物链长和表面吸附强度对微观相形成与取向的影响.体系中随机分布的等径微球提供三维限制结构,体积分数为0.6.增加微...利用动态密度泛函(Dynamic density functional theory,DDFT)方法研究了三维受限下嵌段共聚物的微观相分离,讨论了共聚物链长和表面吸附强度对微观相形成与取向的影响.体系中随机分布的等径微球提供三维限制结构,体积分数为0.6.增加微球的半径和体积分数,能够使其从破坏微相规整结构的纳米掺杂过渡到提供三维限制结构.调整嵌段共聚物与微球表面的相互作用对微相形成与取向有重要影响.展开更多
The product channels and mechanisms of the C2HC12＋O2 reaction are investigated by step-scan time-resolved Fourier transform infrared emission spectroscopy and the G3MP2// B3LYP/6-311G（d,p） level of electronic struc...The product channels and mechanisms of the C2HC12＋O2 reaction are investigated by step-scan time-resolved Fourier transform infrared emission spectroscopy and the G3MP2// B3LYP/6-311G（d,p） level of electronic structure calculations. Vibrationally excited products of HCI, CO, and CO2 are observed in the IR emission spectra and the product vibrational state distribution are determined which shows that HCI and CO are vibrationally excited with the nascent average vibrational energy estimated to be 59.8 and 51.8 kJ/mol respectively. In combination with the G3MP2//B3LYP/6-311G（d,p） calculations, the reaction mechanisms have been characterized and the energetically favorable reaction pathways have been suggested.展开更多
文摘利用动态密度泛函(Dynamic density functional theory,DDFT)方法研究了三维受限下嵌段共聚物的微观相分离,讨论了共聚物链长和表面吸附强度对微观相形成与取向的影响.体系中随机分布的等径微球提供三维限制结构,体积分数为0.6.增加微球的半径和体积分数,能够使其从破坏微相规整结构的纳米掺杂过渡到提供三维限制结构.调整嵌段共聚物与微球表面的相互作用对微相形成与取向有重要影响.
基金V. ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China （No.20733005, No.20673126, and No.20973179）, the National Basic Research Program of China （No.2007CB815200 and No.2007AA02Z116）, and the Chinese Academy of Sciences.
文摘The product channels and mechanisms of the C2HC12＋O2 reaction are investigated by step-scan time-resolved Fourier transform infrared emission spectroscopy and the G3MP2// B3LYP/6-311G（d,p） level of electronic structure calculations. Vibrationally excited products of HCI, CO, and CO2 are observed in the IR emission spectra and the product vibrational state distribution are determined which shows that HCI and CO are vibrationally excited with the nascent average vibrational energy estimated to be 59.8 and 51.8 kJ/mol respectively. In combination with the G3MP2//B3LYP/6-311G（d,p） calculations, the reaction mechanisms have been characterized and the energetically favorable reaction pathways have been suggested.
