信阳师范学院学报（自然科学版）2017，Vol.30Issue(2)：256-259,4.DOI:10.3969/j.issn.1003-0972.2017.02.017
两种基于吡啶/芴的有机配体的设计、合成、表征及其光学性质
Design, Synthesis, Characteristics and Optical Properties of Two Pyridine/Fluorene Based Organic Ligands
摘要
Abstract
Two pyridine/fluorene-based organic ligands 9-(2-chloropyridin-2-yl)-fluoren-9-ol (2-ClPyFOH) and 9-(6-bromopyridin-2-yl)-fluoren-9-ol (6-BrPyFOH) were synthesized successfully.The structures of the compounds were characterized detailedly by mass spectra and nuclear magnetic resonance.The most intense absorption peaks of 9-(pyridyl-2-yl)-fluoren 9-ol (PyFOH),6-BrPyFOH,2-ClPyFOH are 268/275/275,275/275/275,268/274/271,268/274/271,and 268/275/271 nm in cyclohexane,dichloromethane,acetic ether,ethanol and acetonitrile,respectively,which shows the UV-vis of the compounds are red-shifted as the electron-withdrawing ability of halogenated pyridine segments in these solvents except acetic ether.The photoluminescence (PL) spectra peaks of the three compounds are 313/356/356,327/358/365,359/367/312,316/316/401,and 386/377/438 nm in the five solvents,respectively.The PL spectra of PyFOH and 6-BrPyFOH are blue-shifted in ethanol solution compared to those in other lower polarity solvents,which is probably induced by their n-π* electronic transition upon solvation derived from the pyridine segment.The PL spectra of 2-ClPyFOH is red-shifted in these solvents as the solvents polarity increasing except acetic ether.The bromine and chlorine at the 2-and 6-position of pyridine group would endow the ligands with different function units to provide various structures with especial characteristics.关键词
芴/吡啶/氢键Key words
fluorene/pyridine/hydrogen bonding分类
数理科学引用本文复制引用
赵祥华,黎小胜,王莉敏,袁顺东..两种基于吡啶/芴的有机配体的设计、合成、表征及其光学性质[J].信阳师范学院学报（自然科学版）,2017,30(2):256-259,4.基金项目
国家自然科学基金项目(61405170,11547122) （61405170,11547122）
信阳师范学院大学生科研基金项目(2016-DXS-22) （2016-DXS-22）
国家级大学生创新创业训练项目(201510477017) （201510477017）
