Title page for etd-0713112-173820


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URN etd-0713112-173820
Author Yi-wei Li
Author's Email Address No Public.
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Department Materials and Optoelectronic Science
Year 2011
Semester 2
Degree Master
Type of Document
Language English
Title Aggregation-Induced Emission Enhancement of organic and
polymeric fluorophores containing 2,4,6-Triphenylpyridine
moiety 
Date of Defense 2012-06-21
Page Count 62
Keyword
  • 6-triphenylpyridiene
  • 4
  • quantum yield (ФF)
  • suzuki coupling
  • 2
  • Chichibabin reaction
  • aggregation-induced emission enhancement (AIEE)
  • crystallization-induced emission enhancement (CIEE)
  • Abstract In this study, organic and polymeric fluorophores based on 2,4,6-triphenylpyridiene (TPP) structure were found to have the novel aggregation-induced emission enhancement (AIEE) property. For the small-mass fluorophores, TPP and cyano-functionalized TPP (TPP-CN) were prepared from the facile Chichibabin reaction and their AIEE properties were characterized by the emission behavior in solvent/nonsolvent pair. Solid samples of TPP and TPP-CN exhibit enhanced emission with increasing annealing time under solvent vapors, thus, both compounds have the characters of crystallization-induced emission enhancement (CIEE) behavior. For polymeric system, copolymers PTPPF containing alternative TPP and 9,9-dioctylfluorene units were prepared through Suzuki coupling and study on its fluorescence behavior also reveals its AIEE feature. The rigid polymer possesses high emission intensity in its dilute solution state and remains almost unchanged with increasing nonsolvent fraction. The solid sample was found to have a high quantum yield (ФF) of 70 %.
    Advisory Committee
  • Ming Chen - chair
  • Lieh-Li Lin - co-chair
  • Shiao-wei Kuo - co-chair
  • Jin-long Hong - advisor
  • Files
  • etd-0713112-173820.pdf
  • Indicate in-campus at 5 year and off-campus access at 5 year.
    Date of Submission 2012-07-13

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