Complexation of 6-hydroxyquinoline with trimethylamine in polar and non-polar solvents

被引：17
作者：
Mehata, MS [1 ]
Joshi, HC [1 ]
Tripathi, HB [1 ]
机构：
[1] Kumaun Univ, Dept Phys, Photophys Lab, Naini Tal 263002, India
来源：
CHEMICAL PHYSICS LETTERS | 2002年 / 366卷 / 5-6期
关键词：
D O I：
10.1016/S0009-2614(02)01579-8
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Spectral characteristics of 6-hydroxyquinoline (6-HQ) in presence of trimethylamine (TMA) were investigated in polar and non-polar solvents. The steady-state absorption, emission and excitation spectra along with the transient parameters reveal a strong ground state hydrogen-bonded complex formation between the 6-HQ and TMA molecules in both the media. A large Stokes shifted emission due to the formation of contact ion-pairs is observed in these media. However, in acetonitrile the longer decay time (approximate to 12 ns) with relatively broadened emission spectra can be attributed to the presence of solvent separated ion-pairs in addition to contact ion-pairs. The ground state equilibrium constant for complex formation has been determined. The observed quenching behaviour of the fluorescence emission from the normal molecule with TMA appears to be static in nature. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：628 / 635
页数：8
相关论文
共 50 条
  • [31] Microwave frequency effect in the formation of Au nanocolloids in polar and non-polar solvents
    Horikoshi, Satoshi
    Abe, Hideki
    Sumi, Takuya
    Torigoe, Kanjiro
    Sakai, Hideki
    Serpone, Nick
    Abe, Masahiko
    NANOSCALE, 2011, 3 (04) : 1697 - 1702
  • [32] Influence of the Sorption of Polar and Non-Polar Solvents on the Glass Transition Temperature of Polyamide 6,6 Amorphous Phase
    De Anda, A. Rios
    Fillot, L. A.
    Rossi, S.
    Long, D.
    Sotta, P.
    POLYMER ENGINEERING AND SCIENCE, 2011, 51 (11) : 2129 - 2135
  • [33] Synthesis of a new ionic spin probe for investigation of polar and non-polar solvents
    Strehmel, Veronika
    Rexhausen, Hans
    Strauch, Peter
    TETRAHEDRON LETTERS, 2008, 49 (50) : 7143 - 7145
  • [34] Dispersing surface-modified imogolite nanotubes in polar and non-polar solvents
    Ming Li
    Jonathan A. Brant
    Journal of Nanoparticle Research, 2018, 20
  • [35] DIELECTRIC-RELAXATION OF POLAR-MOLECULES IN MIXTURES OF NON-POLAR SOLVENTS
    HANNA, FF
    ABDELNOUR, KN
    GHONEIM, AM
    HUFNAGEL, F
    JOURNAL OF MOLECULAR LIQUIDS, 1985, 31 (01) : 51 - 65
  • [36] An empirical method to evaluate the solubility of several gases in polar and non-polar solvents
    Vetere, A
    FLUID PHASE EQUILIBRIA, 1997, 132 (1-2) : 77 - 91
  • [37] Evaluating polar and non-polar solvents extraction efficiency of gunpowder components by FTIR
    Adriano, Gize
    Ferreira, Carla
    Martins, Rui
    Quintas, Alexandre
    ANNALS OF MEDICINE, 2019, 51 : S181 - S182
  • [38] Gelation of naphthalene-based oligoamide strands in polar and non-polar solvents
    Lu, Kai
    Zhang, Penghui
    Yue, Yarong
    Yuan, Xiangyang
    Yuan, Lihua
    Feng, Wen
    PRZEMYSL CHEMICZNY, 2017, 96 (09): : 1906 - 1912
  • [39] Dispersing surface-modified imogolite nanotubes in polar and non-polar solvents
    Li, Ming
    Brant, Jonathan A.
    JOURNAL OF NANOPARTICLE RESEARCH, 2018, 20 (02)
  • [40] Temperature-Dependent Rotational Dynamics of Non-Polar Solute in Non-Polar Solvents: Influence of Boundary Conditions
    Kumar, Anil
    Harshitha, D.
    Renuka, C. G.
    JOURNAL OF FLUORESCENCE, 2024,
12345