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Macromolecules
Volumn 41, Issue 21, 2008, Pages 7933-7937
Blue-emitting poly(2,7-pyrenylene)s: Synthesis and optical properties
Author keywords

[No Author keywords available]
Indexed keywords

ABS RESINS; BLENDING; FLUORESCENCE; LIGHT EMISSION; LUMINESCENCE; OPTICAL PROPERTIES; ORGANIC COMPOUNDS; ORGANIC SOLVENTS; POLYSTYRENES; SOLVENTS;
EID: 56549103977     PISSN: 00249297     EISSN: None     Source Type: Journal    
DOI: 10.1021/ma8017316     Document Type: Article
Times cited : (64)
References (51)
  • 19
  • 21
    • 56549110879 scopus 로고    scopus 로고
    • It is predictable that attaching the aryl group to the 4,5,9,10-positions of pyrene can improve the solubility and prevent the conjugated polymer from aggregation because of our previous result on polyphenanthrylene.6
    • 6
  • 41
    • 56549130455 scopus 로고    scopus 로고
    • At a high concentration (0.5 mM) in cyclohexane, wherein a nonsubstituted pyrene shows a broad band due to an excimer, compound 2 does not exhibit any excimer emissions Figure S3, Supporting Information
    • At a high concentration (0.5 mM) in cyclohexane, wherein a nonsubstituted pyrene shows a broad band due to an excimer, compound 2 does not exhibit any excimer emissions (Figure S3, Supporting Information).
  • 49
    • 56549107906 scopus 로고    scopus 로고
    • Excitation spectra excited at different wavelengths, 429, 493, and 527 nm, indicated that all of the shapes of the excitation spectra are similar to each other and to that of the absorption spectrum (Figure S5a, Supporting Information). Moreover, in general, if aggregation occurs, the fluorescence of the chromophore is red-shifted and the fluorescence intensity of the longer wavelength decreases with increasing temperature. However, in the case of the polypyrene, when the temperature increased, the fluorescence did not show any bathochromic shift, but the intensity at 440 nm decreased compared to that at 550 nm (Figure S5b, Supporting Information). Therefore, these results indicate the fluorescence we discussed here is from a single species.
    • Excitation spectra excited at different wavelengths, 429, 493, and 527 nm, indicated that all of the shapes of the excitation spectra are similar to each other and to that of the absorption spectrum (Figure S5a, Supporting Information). Moreover, in general, if aggregation occurs, the fluorescence of the chromophore is red-shifted and the fluorescence intensity of the longer wavelength decreases with increasing temperature. However, in the case of the polypyrene, when the temperature increased, the fluorescence did not show any bathochromic shift, but the intensity at 440 nm decreased compared to that at 550 nm (Figure S5b, Supporting Information). Therefore, these results indicate the fluorescence we discussed here is from a single species.

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.