Excited-state dynamics of 4-dimethylamino-4′-nitrobiphenyl confined in AOT reverse micelles
作者: Gisang LeeTaehyung JangSebok LeeHyeongyeol OhHohjai LeeYoonsoo Pang
作者单位: 1Department of Chemistry, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
刊名: Journal of Molecular Liquids, 2020, Vol.305
来源数据库: Elsevier Journal
DOI: 10.1016/j.molliq.2020.112873
关键词: 4-Dimethylamino-4′-nitrobiphenylReverse micellesTime-resolved fluorescenceMicropolarityMicroviscosity
原始语种摘要: Abstract(#br)We report the excited-state intramolecular charge transfer (ICT) dynamics of 4-dimethylamino-4′-nitrobiphenyl (DNBP) in the reverse micelles (RMs) of bis(2-ethylhexyl) sulfosuccinate sodium salt (AOT) by time-resolved fluorescence and transient absorption spectroscopy. The absorption and emission bands of DNBP in the RMs appeared as blue-shifted from the maximum wavelengths of bulk methanol solution, which can be understood as the decrease of solvent polarity in the RMs. The quantum yield and excited-state lifetime of DNBP in the RMs increase enormously upon the decrease of the micelle size, which is interpreted as the decrease of the micropolarity and the increase of microviscosity in the small RMs. The efficient intersystem crossing to the triplet states and strong...
全文获取路径: Elsevier  (合作)
影响因子:1.684 (2012)

  • 限于 状态
  • 动力学 AND-OR-Trigger
  • nitrobiphenyl 4硝基联苯
  • fluorescence 荧光
  • state 状态
  • confined 状态
  • resolved 分辨
  • AOT AND-OR-Trigger
  • dynamics AND-OR-Trigger
  • reverse 逆的