检索结果-南通市图书馆

A Rationalization of Sympathetic Nucleation-Ledgewise Growth Theory of bainite Transformation in Fe-C Alloys

Journal of materials science & Technology 2001年第4期17卷 433-438页

作者： zhigang yang, chi zhang, hongsheng fang, jinbo yang, bingzhe bai and jiajun wang department of materials science and engineering, tsinghua university beijing 100084, china Dept. of Mat. Sci. and Eng. Tsinghua Univ. Beijing 100084 China

Based on the classic diffusion controlled nucleation and goth theory, the sympathatic nucleation- ledgewise growth mechanism of bainite was studied theoretically for low carbon Fe-C alloys. The rationality of the occurrence of sympathetic nucleation on the terraces of ledges compating with lateral ledge growth and other sites nucleation was demonstrated by the present work quantita- tively The calculations indicated that low reaction temperatures and high carbon concentrations may favor the sympathetic nucleation, thus accounting for the formation of multilayer structures of bainite.

关键词： A Rationalization of Sympathetic Nucleation-Ledgewise Growth Theory of bainite Transformation in Fe-C Alloys Fe

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Intermolecular charge-transfer aggregates enable high-efficiency near-infrared emissions by nonadiabatic coupling suppression

引用

science china Chemistry 2021年第10期64卷 1786-1795页

作者： Jie Xue Jingyi Xu jiajun Ren Qingxin Liang Qi Ou Rui wang zhigang Shuai Juan Qiao Key Lab of Organic Optoelectronics and Molecular engineering of Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China Center for Flexible Electronics Technology Tsinghua UniversityBeijing 100084China

Pursuing purely organic materials with high-efficiency near-infrared(NIR) emissions is fundamentally limited by the large nonradiative decay rates(k_(nr)) governed by the energy gap law. To date, reported endeavors to decelerate k_(nr) are mainly focused on reducing the electron-vibration coupling with the electronic nonadiabatic coupling assumed as a constant. Here, we demonstrated a feasible and innovative strategy by employing intermolecular charge-transfer(CT) aggregates(CTA) to realize high-efficiency NIR emissions via nonadiabatic coupling suppression. The formation of CTA engenders intermolecular CT in the excited states;thereby, not only reducing the electronic nonadiabatic coupling and contributing to small k_(nr) for high-efficiency NIR photoluminescence, but also stabilizing excited-state energies and achieving thermally activated delayed fluorescence for highefficiency NIR electroluminescence. This work provides new insights into aggregates and opens a new avenue for organic materials to overcome the energy gap law and achieve high-efficiency NIR emissions.

关键词： nonadiabatic coupling intermolecular charge-transfer molecular aggregates organic light-emitting diodes thermally activated delayed fluorescence

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Descriptor in Organic materials towards Efficient and Long-lived Phosphorescence at Room Temperature

Descriptor in Organic Materials towards Efficient and Long-l...

引用

第一届全国光功能材料青年学者研讨会2018

作者： Huili Ma Qian Peng Hongde Yu jiajun Ren Dong wang zhigang Shuai department of Chemistry and MOE Key Laboratory of Organic Optoelectronics and Molecular engineering Tsinghua University Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced materials (IAM) Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)Nanjing Tech University (NanjingTech) Key Laboratory of Organic Solids and beijing National Laboratory for Molecular science Institute of ChemistryChinese Academy of Sciences

Room-temperature phosphorescence (RTP) with afterglow from purely organic materials has attracted great attentions for their potential *** this study,starting from Jablonski diagram,we first propose two requirements t...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：