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Electronic Absorption and Raman Spectroscopic Studies of ${alpha},{omega}$-Diphenylpolyenyl Anions with Odd Number of Polyene Carbons
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  • Electronic Absorption and Raman Spectroscopic Studies of ${alpha},{omega}$-Diphenylpolyenyl Anions with Odd Number of Polyene Carbons
  • Electronic Absorption and Raman Spectroscopic Studies of ${alpha},{omega}$-Diphenylpolyenyl Anions with Odd Number of Polyene Carbons
저자명
김진열,김응렬,주재범,Kim. Jin Yeol,Kim. Eung Ryeol,Ju. Jae Beom
간행물명
Bulletin of the Korean Chemical Society
권/호정보
2001년|22권 8호|pp.837-841 (5 pages)
발행정보
대한화학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

The electronic absorption and Raman spectra of $alphaomega-diphenylpolyenyl$, anions Ph(CH)nPh- (DPn- , n = 3, 5, 7, 9, and 13), with odd number of carbons at the polyene part, have been studied in the tetrahydrofuran (THF) solutions and in their solid film states, respectively. In the case of Raman spectra for DPn- , the frequencies and relative intensities of some Raman peaks regularly change with the increase of polyene chain length. The spectral patterns of anions (DPn- ) are very similar with those of radical anion (DPn${cdot}$- ). However, the C=C stretching peaks of DPn- anions are observed in the 25-35 cm-1 higher frequency region than those of DPn${cdot}$- radical anions. In the case of long chain models such as DP9- and DP13- , the C=C stretching peaks are observed in even higher frequency region than those of the corresponding neutral polyenes such as DP8, DP10, and DP12. The Raman patterns of DPn- anions in the THF solutions are similar with those in their solid film states. On the other hand, their electronic absorption spectra show a considerable difference each other. The n- ${pi}*$ electronic absorption bands of DPn- anions in the THF solutions have been observed in the 0.27-0.39 eV lower energy region than those in their solid film states due to the solvent effects on polyene anions.