Confinement Effects Of Organic Light-emitting Materials Based On The Carbon Nanotube

Carbon nanotubes with one-dimensional tubular structures have attracted extensive attention for many years because of the unique physicochemical properties.This one-dimensional nanotube forms an interesting nano-confined space,and the molecules in this confined environment exhibit many singular "nanocomposite properties".In order to study the unique properties of materials in this special confined space and to explore their potential applications,from the filling method to the internal filler selection,many researchers continue to explore innovation,the development of new nano-materials and nano-scale molecular motion.And self-assembly behavior of the study also made some breakthroughs.However,due to the particularity of the structure and properties of carbon nanotubes,the traditional filling methods and the filling materials are greatly limited,especially for the special nano-restricted behavior of organic luminescent materials.Polyfluorene is a kind of representative luminescent polymer,and its unique photoelectric properties have been studied deeply.As the light-emitting behavior of polyfluorene molecules is largely influenced by the structure of its main chain and the spatial arrangement of segments,If the polyfluorene can be filled into the carbon nanotubes,the movement and arrangement of polyfluorene molecular chains are likely to be limited by the carbon tube channels,resulting in the arrangement and packing of molecular chains in the same manner as in the natural state,which changes the charge transfer behavior between adjacent molecular groups.In addition,the polyfluorene molecules may interact with the adjacent carbon nanotube tube to form charge transfer,and finally change the energy transfer mode and the luminescence of the polyfluorene molecule.behavior.Due to the small diameter of the carbon nanotubes,it is difficult to introduce the polyfluorene polymer into the carbon nanotubes by the traditional filling method.In this paper,we first used the epoxy resin / carbon nanotube composite porous membrane,driven by the differences of concentration and pressure.The molecular polyfluorene spontaneously diffuses into the carbon nanotube cavity,which avoids the adsorption of the luminescent material on the outer wall of the carbon nanotubes and improves the filling efficiency of the filler.In this paper,we study the special luminescent properties of polyfluorene macromolecules in carbon nanotubes,and discuss the special arrangement of polyfluorene molecules and nanometer confinement in nanometer confined environment.In addition,we also fabricate high-density carbon nanotube arrays by solvent evaporation shrinkage,and construct a new nanometer confined environment to study the physicochemical properties of polyfluorene molecules in such nanometer confined spaces.Finally,we also studied the organic light-emitting small molecules and carbon nanotubes in the internal and external complex,and related luminescence behavior changes.By preparing and studying this kind of luminescent polymer filled with carbon nanotubes(CNTs),it is of great significance for the future understanding of the molecular arrangement and the energy transfer of the luminescent materials in the nano-confined environment.For the preparation of new nano-optics,Nano-sensors also have a potential application value.