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1. The derivates of naphthalene, fluorene, pyrene, anthracene, acenaphthene and their application in biotechnology were reviewed.

2. The fluorescence of fluorene on both the solid surface were not observed which should need the further investigation.

3. In the copolymers of fluorene and DBT, the efficient energy transfer due to exciton trapping on narrow band-gap DBT sites has been observed.

4. The RTP condition of fluorene and acenaphthene on the bonded filter paper was examined in detail.

5. Transition wavelengths for absorption and emission of fluorene derivatives are calculated and match to experiment results.

6. Fluorene and its derivatives have a wide energy gap, which is beneficial to blue emission, and becomes the hot topic of blue emitting materials.

7. Fluorene is an important material in organic chemical industry. It is usually extracted from the washing oil or anthracene oil distillate of coal tar.

8. The electronic clouds focus on the main chain fluorene units but none on side ones on both HOMO and LUMO.

9. The vibronic features in the PL spectra are shown to associate with the stretching of the connection bonds between fluorene units.

10. A simple and mild method for the synthesis of fluorenol was studied. 9 bromofluorene (9 BF) can be selectively obtained by the photochemical reaction of fluorene with N bromosuccinimide (NBS).

11. A novel analytical method has been established for on-line simultaneous determination of fluorene and acenaphthene by polarization synchronous fluorometry(PSF)hyphenated with HPLC.

12. On the other hand , the strain can use better NH4NO3 and phenanthrene, but not fluorene .Sentence dictionary

13. Effects of polymer structure on light-emitting properties were investigated by using different copolymerizing units, such as biphenyl and fluorene .

14. In this thesis, we investigate various optoelectronic devices based on fluorene - cored oligomers.

15. This paper studies the synthesis of the Philippines from 9-hydroxy fluorene -9 - formic acid to its bromide process.

16. The content of germanium and molybdenum in Bidens bipinnata L. was determined at the same time by benzene base fluorescence ketone (benzene fluorene ketone)-CTMAB spectrophotometry.

17. The other is the polymers that the main chains are comprised of fluorene and other functional groups through copolymerization.

18. Using the CBPTM-5 capillary column, the contents of various constituents in the industrial fluorene are determined.

19. It can be concluded that the water uptake of cured polymer could be restricted by the incorporation of hydrophobic fluorene rings and methyl groups.