双核多吡啶铂(Ⅱ)-紫精二元电子给受体体系的光诱导电子转移

设计合成了紫精(MV2+)桥连4′-(4-甲基-苯基)-2,2′:6′,2′′-三联吡啶铂(Ⅱ)(4-CH3-PhN^N^NPtCl)的双核配合物1,{[MV2+(4-CH2PhN^N^NPtCl)22+]·4PF6–}.利用紫外可见吸收光谱、发光光谱、电化学循环伏安谱以及瞬态吸收光谱研究了体系的光诱导电子转移过程,发现在乙腈/甲醇混合溶剂中该二元体系光诱导电子转移的速率常数kCS大于1.4×108s–1,电子回传的速率常数kCR大于2.1×103s–1,电荷分离态寿命长达479μs.     

Tuning the lowest excited- states of platinum (Ⅱ) terpyridyl acetylide complex bearing azacrown moiety: Stimulated by transition metal ions

The development of molecular sensor with high stability and sensitivity has attracted considerable attention in recent years. Of particular interest lies in the molecules which show dramatic color changes in the visible or infrared regions upon exposure to specific substrates. In general, host molecule can selectively recognize the specific guest molecules at their receptor site and produce a measurable change. A number of organic molecular sen     

识别合适的降雨强度-历时-频率模型的方法

提出一种基于IDF模型对未来事件预测能力来选择合适的IDF模型的方法,通过对香港气象台13个不同历时的年最大降雨资料的数据分析,发现IDF模型的预测能力取决于它的数学形式,降雨类型以及模型参数估计所采用的方法。     

Synthesis and ion-binding studies of platinum（Ⅱ） phenanthroline complexes containing crown ether moiety

Two new benzo-[15]-crown-5 attached phenanthroline platinum（Ⅱ） complexes with the general formula Pt（phen）X2, where X = Cl （1）, C=CC6H5 （2） have been synthesized, and their absorption and luminescence response towards metal ions have been studied.     

Synthesis and ion-binding studies of platinum(II) phenanthroline complexes containing crown ether moiety

Square-planar platinum(II) polypyridyl complexes represent an important class of compounds that possess a rich range of spectroscopic and photophysical proper- ties[1―17]. Some of them have demonstrated promise in wide-ranging applications including opti…     

尺度模型在水文频率分析中的应用

 简要介绍了一种新的结合物理过程的尺度模型,并分析比较了应用尺度模型和传统频率分析方法（即直接计算法）来计算设计降雨的优劣势。使用香港新界北雨量站数据,发现尺度模型在降雨历时120, 360,720和1 440 min范围内比较合理,计算得出的设计降雨比直接计算法得出的要小,且随着重现期的增加,两者的差异也相应地增加。结合了物理特性的尺度模型相较直接计算法更加合理,可以作为传统频率分析方法的一种替代或补充方案来计算设计降雨值。     

Photoinduced Electron Transfer, Energy Transfer and Chemical Reactions in Supramolecular Systems

The research team led by Prof.Chenho Tung (CAS member) trekked in the research of photoinduced electron transfer,energy transfer and chemical reactions of supramolecular system for 20 years.     

Supramolecular assemblies based on 2-ureido-4[1H]-pyrimidinone building block

Supramolecular systems are broadly defined as multi-component molecular assemblies, in which the components are held together by a variety of weaker non-covalent interactions, such as hydrogen bonding, π-π stacking,and hydrophobic and lipophilic interac…