Two-Photon Properties and Excitation Dynamics of Poly(p-phenylenevinylene) Derivatives Carrying Phenylanthracene and Branched Alkoxy Pendents†
Two-Photon Properties and Excitation Dynamics of Poly(p-phenylenevinylene) Derivatives Carrying Phenylanthracene and Branched Alkoxy Pendents†
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DOI：
10.1021/jp0141474
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发表时间：
2002-07
影响因子：
2.9
通讯作者：
S. Chung;G. S. Maciel;H. Pudavar;T. Lin;G. He;J. Swiatkiewicz;P. Prasad;D. W. Lee;J. Jin
中科院分区：
文献类型：
--
作者：
S. Chung;G. S. Maciel;H. Pudavar;T. Lin;G. He;J. Swiatkiewicz;P. Prasad;D. W. Lee;J. Jin
本文研究了新型支化聚对亚苯基亚乙烯基结构的激发动力学和双光子特性，该结构可以被视为由产生局部但相互作用的电子激发的互连结构单元组成。聚(对亚苯基亚乙烯基)(PPV)衍生物，特别是聚[2-(9-苯基蒽-10-基)-1,4-亚苯基亚乙烯基](P-1)和聚[2-(2-乙基己氧基)-5-(9-苯基蒽-10-基)-1,4-亚苯基亚乙烯基](P-2)，携带 制备了9-苯基蒽悬垂体，并研究了它们在溶液中的单光子和双光子吸收和发射性能。 P-1 和 P-2 的结构不同在于 P-2 中存在额外的 2-乙基己氧基侧基。这两种聚合物都是通过在过量叔丁醇钾存在下具有侧基的α,α'-二溴对二甲苯单体的直接聚合来制备的。为了进行比较，9,10-二苯基蒽 (DPA) 和聚[2-甲氧基-5-(2'-乙基己氧基)-1,4-亚苯基亚乙烯基] [Meh-PPV (P-3)] 也...
This paper presents a study of excitation dynamics and two-photon properties in new branched poly(p-phenylenevinylene) structures which can be viewed as composed of interlinked structural units producing localized but interacting electronic excitations. Poly(p-phenylenevinylene) (PPV) derivatives, specifically poly[2-(9-phenylanthracen-10-yl)-1,4-phenylenevinylene] (P-1) and poly[2-(2-ethylhexyloxy)-5-(9-phenylanthracen-10-yl)-1,4-phenylenevinylene] (P-2), carrying 9-phenylanthracene pendent were prepared, and their one- and two-photon absorption and emission properties were studied in solution. P-1 and P-2 differ in structure by the presence of additional 2-ethylhexyloxy pendent groups in P-2. Both polymers were prepared by direct polymerization of the α,α‘-dibromo-p-xylene monomers having the pendent group(s) in the present of excess potassium tert-butoxide. For the sake of comparison, 9,10-diphenylanthracene (DPA) and poly[2-methoxy-5-(2‘-ethylhexyloxy)-1,4-phenylenevinylene] [Meh-PPV (P-3)] were also ...