基于二溴化N,N′-二(2-苄基萘)偶氮吡啶盐对多种阴离子的识别研究
|
摘要
基于阴离子识别研究的理念,我们合理地设计了一种新型的阴离子受体——β-NAAB。通过紫外-可见吸收光谱观察不同阴离子最大吸收峰的变化情况。结果发现:由于离子半径的增大导致体系的自组装堆积,以及分子间的交联产生局部屏蔽效应导致部分阴离子的紫外-可见吸收光谱发生了蓝移现象。同时,发现以混合溶剂(20%DMSO和80%H_2O)为良溶剂的所有阴离子溶液中,只有PF~-_6的溶液有荧光发射峰,这说明β-NAAB在混合溶剂(20%DMSO和80%H_2O)中对PF ~-_6有特殊的识别能力。
Based on the concept of anion recognition research, we had designed a new type of anionic receptor-β-NAAB. The changes of maximum absorption peaks of different anions were observed by UV-visible absorption spectra.Due to the increase of ion radius,the self-assembly accumulation of the system and the partial shielding effect of intermolecular cross-linking resulted in the UV-vis absorption spectra of partial anions were occurred blue shift.At the same time,we found that of all anionic solutions with mixed solvent(20% DMSO and 80% H_2O) with no fluorescence intensity, only the solution of PF~-_6 had fluorescence emission peaks,and this indicates that β-NAAB has special ability to recognize PF~-_6 in mixed solvents(20% DMSO and 80% H_2O).
Based on the concept of anion recognition research, we had designed a new type of anionic receptor-β-NAAB. The changes of maximum absorption peaks of different anions were observed by UV-visible absorption spectra.Due to the increase of ion radius,the self-assembly accumulation of the system and the partial shielding effect of intermolecular cross-linking resulted in the UV-vis absorption spectra of partial anions were occurred blue shift.At the same time,we found that of all anionic solutions with mixed solvent(20% DMSO and 80% H_2O) with no fluorescence intensity, only the solution of PF~-_6 had fluorescence emission peaks,and this indicates that β-NAAB has special ability to recognize PF~-_6 in mixed solvents(20% DMSO and 80% H_2O).
引文
[1] JEFFERY T D,OLUYOMI O,ROBERTO Q.Recent advances in the transmembrane transport of anions[J].Chemical Society Reviews,2010,39(10):3843-3862.
[2] OLOF R,KRISTINA S,JOHN H,et al.Food analyses using molecularly imprinted polymers[J].Journal of Agricultural and Food Chemistry,2001,49(5):2105-2114.
[3] TEDIM J,BESSADA R,PATRI'CIO S,et al.Unusual coordination environment for barium cations in ion recognition conducting poly[Ni(salen)(receptor)] films[J].Langmuir,2008,24(16):8998-9005.
[4] RENATAMD F,JEAN-SIMON S,JEAN-MARC C.Nonclassical routes for amide bond formation[J].Chemical Reviews,2016,116(19):12029-12122.
[5] YIN J F,HU Y,WANG D G,et al.Cucurbit[8]uril-based water-soluble supramolecular dendronized polymer:evidence from single polymer chain morphology and force spectroscopy[J].Macro Letters,2017,6(2):139-143.
[6] CAO X W,LIN W Y,YU Q X,et al.Ratiometric sensing of fluoride anions based on a bODIPY-coumarin platform[J].Organic Letters,2011,13(22):6098-6101.
[7] JAROS?AW M G,JAKUB G,JANUSZ J.Synthesis,structure,and complexation properties of a C3-symmetrical triptycene-based anion receptor:selectivity for dihydrogen phosphate[J].Organic Letters,2015,17(23):5882-5885.
[8] MASAYA T,TAKUYA N,TSUYOSHI K.Phenyleneethynylene-and phienyleneethynylene-based π-conjugated polymers with imidazolium units in the main chain[J].Macromolecules,2009,42(21):8068-8075.
[9] LIN W,SHI X F,WU Y Q,et al.A multifunctional supramolecular hydrogel:preparation,properties and molecular assembly[J].Soft Matter,2018,14(4):566-573.
[10] SATOSHI E,PETER G,STEFAN B H,et al.Compound-specific factors influencing sorption nonlinearity in natural organic matter[J].Environmental Science & Technology,2008,42(16):5897-5903.
[11] CHATTARAJ P K.Chemical reactivity and selectivity:local HSAB principle versus frontier orbital theory[J].The Journal of Physical Chemistry A,2001,105(2):511-513.
[2] OLOF R,KRISTINA S,JOHN H,et al.Food analyses using molecularly imprinted polymers[J].Journal of Agricultural and Food Chemistry,2001,49(5):2105-2114.
[3] TEDIM J,BESSADA R,PATRI'CIO S,et al.Unusual coordination environment for barium cations in ion recognition conducting poly[Ni(salen)(receptor)] films[J].Langmuir,2008,24(16):8998-9005.
[4] RENATAMD F,JEAN-SIMON S,JEAN-MARC C.Nonclassical routes for amide bond formation[J].Chemical Reviews,2016,116(19):12029-12122.
[5] YIN J F,HU Y,WANG D G,et al.Cucurbit[8]uril-based water-soluble supramolecular dendronized polymer:evidence from single polymer chain morphology and force spectroscopy[J].Macro Letters,2017,6(2):139-143.
[6] CAO X W,LIN W Y,YU Q X,et al.Ratiometric sensing of fluoride anions based on a bODIPY-coumarin platform[J].Organic Letters,2011,13(22):6098-6101.
[7] JAROS?AW M G,JAKUB G,JANUSZ J.Synthesis,structure,and complexation properties of a C3-symmetrical triptycene-based anion receptor:selectivity for dihydrogen phosphate[J].Organic Letters,2015,17(23):5882-5885.
[8] MASAYA T,TAKUYA N,TSUYOSHI K.Phenyleneethynylene-and phienyleneethynylene-based π-conjugated polymers with imidazolium units in the main chain[J].Macromolecules,2009,42(21):8068-8075.
[9] LIN W,SHI X F,WU Y Q,et al.A multifunctional supramolecular hydrogel:preparation,properties and molecular assembly[J].Soft Matter,2018,14(4):566-573.
[10] SATOSHI E,PETER G,STEFAN B H,et al.Compound-specific factors influencing sorption nonlinearity in natural organic matter[J].Environmental Science & Technology,2008,42(16):5897-5903.
[11] CHATTARAJ P K.Chemical reactivity and selectivity:local HSAB principle versus frontier orbital theory[J].The Journal of Physical Chemistry A,2001,105(2):511-513.