日韩av大片在线观看欧美成人不卡|午夜先锋看片|中国女人18毛片水多|免费xx高潮喷水|国产大片美女av|丰满老熟妇好大bbbbbbbbbbb|人妻上司四区|japanese人妻少妇乱中文|少妇做爰喷水高潮受不了|美女人妻被颜射的视频,亚洲国产精品久久艾草一,俄罗斯6一一11萝裸体自慰,午夜三级理论在线观看无码

 文獻(xiàn)名： A solvatochromic AIE tetrahydro [5] helicene derivative as fluorescent probes for water in organic solvents and highly sensitive sensors for glyceryl monostearate

 

作者：Lifen Caiab; Xiangying Sunab; Wei Heab; Ruolan Huab; Bin Liuab; Jiangshan Shenab 

aCollege of Materials Science and Engineering, Huaqiao University, Xiamen, 361021, China

bKey Laboratory of Molecular Designing and Green Conversions (Huaqiao University), Fujian Province University, Xiamen, 361021, China

 

摘要：In this paper, a tetrahydro[5]helicene-based imide dye with thienyl group (THID) was studied on its solvatochromism and aggregation-induced emission (AIE) properties by dissolved in various organic solvents. The linear relationship between Stokes shift and aprotic solvent polarity parameter was well fitted with Lippert-Mataga model. Furthermore, Stokes shift also were positively correlated with the normalized molar electronic transition energy, suggested that THID exceptionally depends on solvent polarity for twisted intramolecular charge transfer. In addition, THID demonstrated typical AIE features when adding large amounts of water into good solvent. Meanwhile, it can function as intensity and wavelength-based fluorescence sensor for detecting low-level water content in water soluble solvents, even the low of detection was 0.014?vol% in ACN. Therefore, a simple and highly selective fluorescence analysis for glyceryl monostearate has been established on basis of its AIE property.