Nanocomposites and nanomaterials

Polymer-graphene ternary luminescent composites
Kukhta A.V.1, Kuzhir P.P.1, Maksimenko S.A.1*, Khanna P.K.2, Sherstiuk V.P.3
1 Institute for Nuclear Problems, Belarusian State University, Babruiskaya Str. 11, 220030 Minsk, Belarus
E-mail: al.kukhta@gmail.com
2 Defense Institute of Advanced Technology, Deemed University, 411025 Pune, India E-mail: al.kukhta@gmail.com
3 Kiev Polytechnic Institute, Peremogi Ave. 37, 03056 Kiev, Ukraine

Cost effective electrically conductive materials with luminescent properties are very attractive for manifold electronic applications such as light-emitting diodes, solar cells, sensors, etc. Up to now a wide number of different semiconductor nanoparticles and organic phosphors with high quantum yields has been developed.
Polymer based composite materials where polymer as a matrix and organic or inorganic materials as nanofiller with their positive qualities and bottlenecks are often used. Commonly, polymers have advantages such as easy synthesis and processing, chemical and structural diversity, low weight, and flexibility. Some semiconducting polymers have also luminescent ability. Graphene nanoplatelets are often used as nanofiller for polymers. Graphene surface can improve strongly the electrical conductivity, and can serve as a carrier matrix for molecules or quantum dots. Nanosized fillers results in an increased role of the interface between the components due to their large active surface. The properties of nanocomposite are known to be determined by the properties of the polymer, the filler and the interface between them.
The main problem is that a strong luminescent quenching is usually observed in electrically conducting materials partially in nanocarbon containing materials. However, we have found luminescent composites with 30% luminescence quenching only, and conducting luminescent materials have been obtained. In this talk the best our achievements and literature data on the new creation approaches and physical properties of electrically conducting and luminescent nanocomposites based on polymer filled with graphene nanoplatelets covered by organic luminescent molecules or semiconductor nanoparticles are presented and analyzed, separately for every component, for binary systems, and ternary system. The other ways to solve the required task are considered.