The effects of oxygen concentration and light intensity on the photostability of zwitterionic chromophores

被引：0
|
作者：
Raymond, S.G. [1 ]
Williams, G.V.M. [1 ]
Lochocki, B. [1 ]
Bhuiyan, M.D.H. [1 ]
Kay, A.J. [1 ]
Quilty, J.W. [1 ]
机构：
[1] Photonics Group, Industrial Research Ltd., P.O. Box 31310, Lower Hutt 5040, New Zealand
来源：
Journal of Applied Physics | 2009年 / 105卷 / 11期
关键词：
Photostability measurements at different oxygen partial pressures and light intensities have been made on host-guest films containing amorphous polycarbonate and an organic chromophore with a high second order nonlinear optical figure of merit. We find that the photodegradation quantum efficiency dramatically increases with increasing oxygen partial pressure. At very low oxygen partial pressures (8 10-6 bar) the average number of photons required to photodegrade a chromophore is as high as 2 108 at 655 nm. The photodegradation quantum efficiency in air is observed to decrease with increasing optical intensity. We show that this is due to a reduced oxygen content in the film caused by chromophore photodegradation rather than ground state bleaching. There is an anomalous increase and then decrease in the photoluminescence intensity that cannot easily be explained. © 2009 American Institute of Physics;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
相关论文
共 50 条
  • [31] EFFECTS OF LIGHT-INTENSITY AND OXYGEN ON PHOTOSYNTHESIS AND TRANSLOCATION IN SUGAR-BEET
    SERVAITES, JC
    GEIGER, DR
    PLANT PHYSIOLOGY, 1974, 54 (04) : 575 - 578
  • [32] CONCENTRATION-DEPENDENCE OF LIGHT ECHO INTENSITY
    GADOMSKII, ON
    NAGIBAROV, VR
    SOLOVAROV, NK
    IZVESTIYA AKADEMII NAUK SSSR SERIYA FIZICHESKAYA, 1973, 37 (10): : 2125 - 2128
  • [33] Photochemically Induced ATRP of (Meth)Acrylates in the Presence of Air: The Effect of Light Intensity, Ligand, and Oxygen Concentration
    Borska, Katarina
    Moravcikova, Daniela
    Mosnacek, Jaroslav
    MACROMOLECULAR RAPID COMMUNICATIONS, 2017, 38 (13)
  • [34] EFFECT OF TEMPERATURE CO2 CONCENTRATION AND LIGHT INTENSITY ON OXYGEN INHIBITION OF PHOTOSYNTHESIS IN WHEAT LEAVES
    JOLLIFFE, PA
    TREGUNNA, EB
    PLANT PHYSIOLOGY, 1968, 43 (06) : 902 - &
  • [35] Combined effects of light intensity and acetate concentration on the growth of unicellular microalga Haematococcus pluvialis
    Jeon, You-Chul
    Cho, Chul-Woong
    Yun, Yeoung-Sang
    ENZYME AND MICROBIAL TECHNOLOGY, 2006, 39 (03) : 490 - 495
  • [36] The effects of light intensity and nitrogen concentration to enhance lipid production in four tropical microalgae
    Chin, Grace Joy Wei Lie
    Andrew, Audrey Rose
    Abdul-Sani, Erma Rizah
    Yong, Wilson Thau Lym
    Misson, Mailin
    Anton, Ann
    BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY, 2023, 48
  • [37] Effects of light intensity and titanium dioxide concentration on photocatalytic sterilization rates of microbial cells
    Horie, Y
    David, DA
    Taya, M
    Tone, S
    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1996, 35 (11) : 3920 - 3926
  • [38] Effects of light intensity, soil acidity, and nitrogen concentration on the vegetative growth of pitaya seedlings©
    Fumuro, M.
    PROCEEDINGS OF THE 2015 ANNUAL MEETING OF THE INTERNATIONAL PLANT PROPAGATORS' SOCIETY, 2016, 1140 : 105 - 111
  • [39] Effects of Polymer Concentration on Structure and Properties of Zwitterionic Nanocomposite Gels
    Ning, Jinyan
    Li, Guang
    Haraguchi, Kazutoshi
    MACROMOLECULAR CHEMISTRY AND PHYSICS, 2014, 215 (03) : 235 - 244
  • [40] Effects of the Oxygen Content and Light Intensity on Milk Photooxidation Using Untargeted Metabolomic Analysis
    Tan, Dongfei
    Ma, Aijin
    Wang, Shaolei
    Zhang, Qingyang
    Jia, Man
    Kamal-Eldin, Afaf
    Wu, Huaxing
    Chen, Gang
    JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2021, 69 (26) : 7488 - 7497
12345