两种黄绿光铱配合物的合成及光物理性质研究

以2-苯基-6-(三氟甲基)-苯并噻唑和5,7-二氟-2-苯基苯并噻唑为主配体,分别与辅助配体三苯基膦合成了两种新型的环金属铱配合物(Ir1和Ir2)。用核磁共振氢谱(¹H-NMR)和质谱(MS)进行表征并确认其结构。用紫外吸收光谱以及荧光发射光谱研究了它们的光物理性质,Ir1和Ir2的最大发射波长分别为548和546 nm,发黄绿光,相对量子产率为41.1%和69.2%,荧光寿命分别为0.65和0.66 μs。密度泛函理论(DFT)计算表明紫外最大吸收峰和荧光发射峰均归因于MLCT/ILCT跃迁。     

Data Processing Middleware in a High-Powered Neutral Beam Injection Control System

A set of data-processing middleware for a high-powered neutral beam injection(NBI) control system is presented in this paper.The middleware,based on TCP/IP and multi-threading technologies,focuses mainly on data processing and transmission.It separates the data processing and compression from data acquisition and storage.It provides universal transmitting interfaces for different software circumstances,such as WinCC,LabView and other measurement systems. The experimental data acquired on Windows,QNX and Linux platforms are processed by the middleware and sent to the monitoring applications.There are three middleware deployment models:serial processing,parallel processing and alternate serial processing.By using these models,the middleware solves real-time data-processing problems on heterogeneous environmental acquisition hardware with different operating systems and data applications.     

一种有效的异构盘高能效缓存机制

固态盘具有低功耗、高性能、耐冲击等优势,硬盘具有高容量、低价格等优势.通过改进文件系统的结构,把固态盘和硬盘结合起来,固态盘作为硬盘的大容量缓存,组成一个我们称之为异构盘的异构系统,其性能接近于固态盘,价格却接近于硬盘.同时,在硬盘有足够空闲时长时,使之关闭以减少能耗.针对大容量缓存,我们采用了合适的树形搜索结构,提出...     

两种嘧啶基噻吩类磷光铱配合物的合成及表征

以2-嘧啶基噻吩(pymbt,L1)和2-嘧啶基苯并噻吩(pymbtp,L2)作为环金属化主配体,二(二苯基磷酰)亚胺(Htpip)作为O^O型辅助配体,合成了两种新型磷光金属铱配合物(pymbt)2Ir(tpip) (Ir1)和(pymbtp)2Ir(tpip) (Ir2)。通过核磁共振氢谱、质谱和元素分析对其进行了结构表征,用紫外-可见吸收光谱和荧光发射光谱进行了光物理性质的研究。结果表明,铱配合物Ir1和Ir2在溶液中的最大发射峰分别为563 nm和619 nm,为橙黄光和红光。在无水无氧二氯甲烷溶液中相对量子效率分别为6.3%和10.1%,磷光寿命为0.50 ms和0.63 ms。同时采用含时密度泛函理论(TDDFT)对配合物Ir1和Ir2的最低能量电子跃迁进行了计算,结果与实验测得的相应光谱数据对应的趋势相符。