Probing interchain interactions in emissive blends of poly [2-metboxy-5-(2′-ethylhexyloxy)-p-phenylenevinylene] with polystyrene and poly(styrene-co-2-ethylhexyl acrylate) by fluorescence spectroscopy

被引:7
作者
De Andrade, Marcelo L. [1 ]
Atvars, Teresa D. Z. [1 ]
机构
[1] Univ Estadual Campinas, Inst Quim, BR-13084971 Campinas, SP, Brazil
关键词
poly [2-methoxy-5-(2 '-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV); blends; miscibility; copolymer poly(styrene-co-2-ethylhexyl acrylate-co-1-pyrenylmethyl methacrylate); fluorescence; energy transfer;
D O I
10.1590/S0103-50532006000500027
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We present dynamic and static photoluminescence studies on polymer blends of conjugated poly [2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene] (MEH-PPV) with polystyrene-co-1-pyrenyl methyl methacrylate and its copolymer poly(styrene-co-2-ethylhexyl acrylate-co-1-pyrenylmethyl methacrylate) (with 9 mol% and 19 mol% of 2-ethylhexyl acrylate units and 0.06 mol% of 1-pyrenyl). Pyrenyl-labeled polystyrene and its copolymers were synthesized by emulsion polymerization and characterized by C-13 and H-1-NMR, FTIR, GPC, DSC, and UVVis. Spin-coating films of the blends were prepared from chloroform solutions with 0.1, 0.5, 1.0, and 5.0 wt% of MEH-PPV The miscibility of these systems was studied by non-radiative energy transfer processes between the 1-pyrenyl moieties (the energy donor) and MEH-PPV (the energy acceptor). The relative emission intensities and the fluorescence lifetimes of the donor showed that the miscibility of MEH-PPV and the copolymers is greater than that of MEH-PPV and polystyrene and this was confirmed by epifluorescence optical microscopy and scanning electron microscopy.
引用
收藏
页码:1000 / 1013
页数:14
相关论文
共 64 条
[1]   Nanophase-separated blends of acceptor and donor conjugated polymers.: Efficient electroluminescence from binary polyquinoline/poly(2-methoxy-5-(2′-ethylhexyloxy)-1,4-phenylenevinylene) and polyquinoline/poly(3-octylthiophene) blends [J].
Alam, MM ;
Tonzola, CJ ;
Jenekhe, SA .
MACROMOLECULES, 2003, 36 (17) :6577-6587
[2]   Color engineering by modified oligothiophene blends [J].
Anni, M ;
Gigli, G ;
Paladini, V ;
Cingolani, R ;
Barbarella, G ;
Favaretto, L ;
Sotgiu, G ;
Zambianchi, M .
APPLIED PHYSICS LETTERS, 2000, 77 (16) :2458-2460
[3]  
[Anonymous], 1989, POLYM ALLOYS BLENDS
[4]   Structural study of polymer blends by fluorescence spectroscopy [J].
Atvars, TDZ ;
Esteban, I ;
Illera, B ;
Serrano, B ;
Vigil, MR ;
Pierola, IF .
JOURNAL OF LUMINESCENCE, 1997, 72-4 :467-469
[5]   Morphology and field-effect mobility of charge carriers in binary blends of poly(3-hexylthiophene) with poly [2-methoxy-5-(2-ethylhexoxy)-1,4-phenylenevinylene] and polystyrene [J].
Babel, A ;
Jenekhe, SA .
MACROMOLECULES, 2004, 37 (26) :9835-9840
[6]   Energy transfer in a ladder-type methyl-poly(para-phenylene) doped by Pt(II)octaethylporphyrin [J].
Bagnich, SA ;
Im, C ;
Bässler, H ;
Neher, D ;
Scherf, U .
CHEMICAL PHYSICS, 2004, 299 (01) :11-16
[7]  
Berlman I.B., 1973, ENERGY TRANSFER PARA
[8]   The optical spectroscopy of poly (p-phenylene vinylene)/polyvinyl alcohol blends:: from aggregates to isolated chromophores [J].
Bjorklund, TG ;
Lim, SH ;
Bardeen, CJ .
SYNTHETIC METALS, 2004, 142 (1-3) :195-200
[9]   Photo-, and electroluminescence studies of 2,5-bis[2′-(4"-(6-hexoxy benzyl))-1′-ethenyl]-3, 4-dibutyl thiophenes [J].
Blumstengel, S ;
Sokolik, I ;
Dorsinville, R ;
Voloschenko, D ;
He, M ;
Lavrentovich, O ;
Chien, LC .
SYNTHETIC METALS, 1999, 99 (01) :85-90
[10]  
Brandrup J., 1975, POLYM HDB