Article
  • Copolymerization of Naphthalimidoalkylmethacrylates with Styrene and Fluorescence Behavior of Their Copolymers
  • Kim WS, Hong KH, Nam CR, Seo KH
  • 나프탈이미도알킬메타크릴레이트와 스티렌의 공중합과 그들 공중합체의 형광특성
  • 김우식, 홍기헌, 남춘래, 서관호
Abstract
Naphthalimidoethylmethacrylate(NIEM) and naphthalimidobutylmethacry1 ate(NIBM)were copolymerized with styrene (ST) using : azobisisobutyronitrile as an initiator in dimethylformamide at 60℃, respectively. The compositions of the copolymers were analyzed by ultra-violet spectrophotometry. The monomer reactivity ratios for the systems and Alfrey-Price's resonance effect(Q) and polar effect(e) values for NIEM and NIBM were determined as follows : NIEM(1)-ST(2) r1=0.28, r2=0.36, Q1=0.84, e1=0.72 HIBM(1)-ST(2) r1=0.29, r2=0.40, Q1=0.78, e1=0.67 The product of r1 and r2 suggests that poly(NIEM-co-ST) and poly(NIBM-co-ST) have a greatly alternating tendency. The copolymers were observed to exhibit a monomer emission band at 380 nm and an excimer emission band at 460 nm. The ratios of the excimer to the monomer emission intensities of poly(NIBM-co-ST) were higher than those of poly(NIEM-co-ST). The tendency for the copolymers agreed with that for poly(NIEM)and poly(NIBM) in our previous paper.

60℃에서 디메틸포름아미드중에서 아조비스이소브틸로니트릴을 개시세로 사용하여 나프탈이미도에틸메타크릴레이트 (NIEM) 및 나프탈이미도부틸메타크릴레이트(NIBM)를 스티렌(ST)과 각각 공중합하였다. 공숭합체의 조성은 자외선분광광도법으로_분석하였다. 공중합의 단량체 반응성비와 NIEM 및 NIBM의 공명효과(Q) 및 극성효과(e)를 구하였다. NIEM(1)-ST(2) r1=0.28, r2=0.36, Q1=0.84, e1=0.72 NIBM(1)-ST(2) r1=0.29, r2=0.40, Q1=0.78, e1=0.67 r1과 r2의 곱은 NIEM-ST 공중합체와 NIBM-ST공중합체가 큰 교호성을 가지는 것을 시사한다. 이들 공중합체는 380nm에서 단량체발광띠와 460nm에서 엑시마발광띠를 나타내었다. NIBM-ST공합체의 단량체발광강도에 대한 엑시마발광강도비는 NIEM-ST 공중합체의 그 비보다 컸다. 공중합체에 대한 이 경향은 이전 연구에서의 poly(NIEM)과 poly(NIBM)의 경향과 일치하였다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1994; 18(3): 285-291

    Published online May 25, 1994