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The Synthesis of Rhodamine, and Coumarin Derivatives and Investigation of Their Spectra Properties

Author: FengYanMing
Tutor: LinWeiYing
School: Hunan University
Course: Organic Chemistry
Keywords: Rhodamine Coumarin Synthesis Fluorescence Dye Probe
CLC: O621.2
Type: Master's thesis
Year: 2010
Downloads: 330
Quote: 0
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Abstract


In recent years, rhodamine and coumarin dyes as usual , its unique photochemical photophysical properties has aroused widespread concern. Rhodamine substances as fluorophores , with its water-soluble, long excitation wavelength , and low toxicity , more and more used in biological experiments . Coumarins also a superior optical performance fluorescent dye , either alone or as a light emitting dyes , energy transfer can also be used as a donor . In previous studies in our laboratory , we have designed and synthesized a number of rhodamine derivatives in vivo as a probe . However, previous work we have not a series of luminescent properties of dye rhodamine derivatives make systematic comparisons . Thus , on this basis, we synthesized a series of types of continued rhodamine dye derivatives , and conducted research comparison and spectral properties . Meanwhile , the use of various properties of coumarin , were designed and synthesized as Co2 coumarin and Ni2 quinoline probe opening . Last connection rhodamine and coumarin structure, through ) PET mechanism , designed and synthesized Fe3 ion microprobe . Purpose of this study is to understand the various types of coumarin and rhodamine derivatives spectral properties , and use its spectral properties to better design and synthesis of probes . Which coumarin - quinoline probe is a rare Ni2 and Co2 enhanced fluorescence probe examples. Coumarin and rhodamine probes , as the first fluorescence resonance energy transfer based on the ratio of Fe3 fluorescent probes , has a very low detection limit , in a very small amount of Fe3 presence , can make at 575 nm significantly enhanced fluorescence , while the 420 nm fluorescence emission weak enhancement position . Add Fe3 ions, 575 and 465 nm in the emission intensity ratio of from 0.014 to 1.05 have been equivalent to 75 times increase. These good ion probe can serve as an important tool to study chemical ion microprobe fluorescence response in a variety of organisms .

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Organic Chemistry general issues > Properties of organic compounds
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