树枝分子吡啶基PAMAM和碘基苯分支化合物的紫外光区负吸收  

Negative Absorption of Dendrimer Pyridinyl PAMAM and Iodinyl Benzene Branch Compounds in Ultraviolet Region

作　　者：吉彦[1,2] 陶在琴 罗蔓利 钱鹰 

机构地区：[1]河南师范大学化学与化工学院,河南 新乡 [2]东南大学化学与化工学院,江苏 南京

出　　处：《化学工程与技术》2020年第5期376-383,共8页Hans Journal of Chemical Engineering and Technology

摘　　要：紫外–可见吸收光谱在化学检测、化合物表征方面起到非常重要的作用。然而近期在实验中发现,在坐标图纵轴的负坐标区域发现有零线以下的吸收图谱,被称为紫外–可见光负吸收图谱。该现象少有发现和报道,在常规思维与科学理论下非常难以理解,从而被忽略。本文以树枝分子吡啶基PAMAM和碘基苯分支化合物的紫外光区负吸收图谱为基础,分析了负吸收的相关的因素及特征,试图解开负吸收的相关机理,为找到特征的负吸收材料提供基础数据。化学材料在紫外–可见光区域内的负吸收现象具有潜在的科学价值和广阔的研究前景。UV-Vis absorption spectrum plays an important role in chemical detection and characterization of compounds. However, in recent experiments, it has been found that there is an absorption spectrum with zero lines in the negative coordinate area of the vertical axis of the coordinate diagram, which is called the negative absorption spectrum of ultraviolet and visible light. This phenomenon is rarely discovered and reported, and is very difficult to understand under conventional thinking and scientific theory, so it is ignored. In this paper, the factors and characteristics of negative absorption were analyzed based on the UV-Vis absorption spectrum of dendrimers with pyridinyl PAMAM and iodinyl benzene branches, in an attempt to unravel the mechanism of negative absorption and provide basic data for finding the characteristic negative absorption materials. The negative absorption of chemical materials to ultraviolet and visible light has potential scientific prospect and great research value.

关 键 词：紫外–可见吸收 负吸收 树枝分子 光谱 实验观测 

分 类 号：G63[文化科学—教育学]