Photophysical behaviour of 2,6-diaminoanthraquinone in different solvents and at various pH

被引：5
|
作者：
Kumar, P. Siva [1 ]
Nayaki, S. Kothai [1 ]
Swaminathan, M. [1 ]
机构：
[1] Annamalai Univ, Fac Engn & Technol, Dept Chem, Annamalainagar, Tamil Nadu, India
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2007年 / 68卷 / 03期
关键词：
2,6-Diaminoanthraquinone; Hydrogen bonding interactions; Solvent relaxation;
D O I：
10.1016/j.saa.2006.12.042
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
The absorption and fluorescence spectral properties of 2,6-diaminoanthraquinone (DAAQ) have been investigated in a series of organic solvents of different polarity and in aqueous solutions with H-o/pH/H- in the range - 10 to 17. The Stokes shift of DAAQ is correlated with various polarity scales. The study reveals the fluorescence of DAAQ dication is red shifted on protonation. The abnonnal fluorescence of DAAQ dication is found to be due to large solvent relaxation in polar medium. The acidity constants for various prototropic reactions in S-o and S-1 states are determined and discussed. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：651 / 655
页数：5
相关论文
共 50 条
  • [21] Luminescence characteristics of 4,4'-dihydroxybiphenyl in different solvents and at various pH
    Nayaki, SK
    Swaminathan, M
    INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 1997, 36 (08): : 701 - 704
  • [22] DIMERIZATION OF 2,6-DIPHENYL-4-METHOXYPHENOXYL RADICAL IN VARIOUS SOLVENTS
    KHUDYAKOV, IV
    DEJONGE, C
    LEVIN, PP
    KUZMIN, VA
    BULLETIN OF THE ACADEMY OF SCIENCES OF THE USSR DIVISION OF CHEMICAL SCIENCE, 1977, 26 (02): : 401 - 404
  • [23] Enhanced electrochromic properties of 2,6-diaminoanthraquinone and 1,3,5-triformylresorcinol (DAAQ-TFP) covalent organic framework/functionalized graphene oxide composites containing anthraquinone active unit
    Lv, Fengyan
    Xiong, Shanxin
    Zhang, Jiaojiao
    Wang, Xiaoqin
    Chu, Jia
    Zhang, Runlan
    Gong, Ming
    Wu, Bohua
    Liu, Guoquan
    Luo, Wen
    ELECTROCHIMICA ACTA, 2021, 398
  • [24] Spectral characteristics of 4-aminodiphenyl ether in different solvents and at various pH values
    Rajendiran, N
    Swaminathan, M
    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1996, 93 (2-3) : 103 - 108
  • [25] Luminescence characteristics of 4,4'-diaminodiphenyl methane in different solvents and at various pH
    Rajendiran, N
    Swaminathan, M
    SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, 1996, 52 (13) : 1785 - 1792
  • [26] THERMOCHROMIC AND SOLVOCHROMIC BEHAVIOUR OF COBALT (2) CHLORIDE SOLUTIONS IN VARIOUS SOLVENTS
    NIEUWPOORT, WC
    WESSELINK, GA
    VANDERWE.EH
    RECUEIL DES TRAVAUX CHIMIQUES DES PAYS-BAS, 1966, 85 (04): : 397 - +
  • [27] ABSORPTION AND FLUORESCENCE CHARACTERISTICS OF SOME 2-ARYL-BENZOTHIAZOLES AND 2-HETEROARYL-BENZOTHIAZOLES IN DIFFERENT SOLVENTS AND AT VARIOUS PH VALUES
    TRALICKULENOVIC, V
    FISERJAKIC, L
    LAZAREVIC, Z
    SPECTROSCOPY LETTERS, 1993, 26 (09) : 1771 - 1784
  • [28] Probing the structural features and the micro-heterogeneity of various deep eutectic solvents and their water dilutions by the photophysical behaviour of two fluorophores
    Tiecco, Matteo
    Di Guida, Irene
    Gentili, Pier Luigi
    Germani, Raimondo
    Bonaccorso, Carmela
    Cesaretti, Alessio
    JOURNAL OF MOLECULAR LIQUIDS, 2021, 331
  • [29] ELEMENTARY ACTS OF PHOTOREACTIONS OF 2,6-DIPHENYL-1,4-BENZOQUINONE IN VARIOUS SOLVENTS
    Gurulev, D. N.
    Palatkina, L., V
    Kuznetsova, N. A.
    Porkhun, V., I
    IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA I KHIMICHESKAYA TEKHNOLOGIYA, 2019, 62 (01): : 26 - 30
  • [30] Luminescence characteristics of 1,1′-binaphthyl-4,4′-diol in different solvents and at various pH
    Nayaki, SK
    Swaminathan, M
    INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY, 2000, 39 (06): : 634 - 638
12345