久久无码人妻一区二区三区午夜_久久久久精品久久久久影院蜜桃_亚洲综合欧美色五月俺也去_交换娇妻呻吟声不停中文字幕

 文獻名： 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.