**1. Introduction**

π-conjugated molecules and polymers have attracted considerable interest in both fundamental studies and applied research [1]. This is due to their onedimensional characteristics and their many potential applications. One-dimensional (1D) nanostructures based on organic materials are attracting significant research [2–4] interest owing to the many novel chemical, physical, and electronic properties that may arise in such systems and the possibility of exploiting these properties in a variety of applications [5–9]. However, for 1D nanostructure in general, a key challenge is the development of new approaches that will permit controlled nanowires and nanotubes architectures [10]. Nanoporous template method has been used to synthesize well-defined nanoscale tubes or wires inside nanoporous channels [10, 11]. This technique has many advantages, in that it is low-cost, control of physical properties or size is easy [10, 11], and that it lends itself to the logic of mass production. The fabrication of nanoscale structures has attracted much interest due to their potential use in electronic and optical applications [12–16]. Among many techniques generating the nanoscale structures, the anodized aluminum oxide (AAO) [10, 11] has been most widely used as a template for forming metal or semiconductor nanowires. The AAO has been known to have a clear advantage of an economical way to produce the large area periodic nanostructures [11]. These

nanostructures were a seat of charge and energy transfer especially on the acceptordonor architecture [17, 18]. The energy transfer [19] depend the absorption, the quantum yield of emitter's efficiency. Additionally, it depend on the donor and acceptor characters of luminophores, the relative spatial distribution of acceptor and donor, the overlapping between the donor absorption spectrum and the acceptor emission spectrum.

In this way, we report the synthesis of poly(para-phenylene-vinylene) PPV [20] (electron donor) and poly(vinyl-carbazole) PVK [20] (good hole transport) nanowires, and a coaxial architecture bases on PPV and PVK polymers using the AAO and describe their optical and structural characteristics. Stationary and transition photoluminescence have been employed to demonstrate the nature of energy and charge-transfer processes occurring in these nanostructures.
