https://doi.org/10.1140/epjd/e2014-50328-7
Regular Article
Photophysical study of P3HT/NDI based hybrid nanoparticles*
1 Department of Physics, Indian
Institute of Technology Roorkee, Roorkee, Uttarakhand
247667,
India
2 Department of Materials
Science, Indian Association for the
Cultivation of Science, 700032
Kolkata,
India
3 Polymer Science Unit, Indian
Association for the Cultivation of Science, 700032
Kolkata,
India
a e-mail: soumitrasatapathi@gmail.com
Received:
25
April
2014
Received in final form:
11
July
2014
Published online:
21
November
2014
Electron donor-acceptor based hybrid novel structure remains a frontier area of research to design optoelectronic, photovoltaic, and light harvesting devices. Here, we report the synthesis of interdyad and intradyad nanoparticles by using the electron donating polymer Poly-3-(hexylthiophine)) (P3HT) and the electron accepting molecule 1, 4, 5, 8 naphthalene tetracarboxylic diimide (NDI). The intradyad nanostructures are fabricated in situ by adding donor and acceptor molecules simultaneously whereas interdyad nanoparticles are fabricated by attaching the donor and acceptor nanoparticles electrostatically. The differential scanning calorimetry (DSC) confirms the segmental motion of the polymer chain and the uniform packing in intradyad nanostructures which is absent in the interdyad system. The photoluminescence quenching and the shortening of decay time of the excited state of the donor molecule were observed with increasing the concentration of acceptor molecule in the intradyad system which is attributed to the photoinduced electron transfer from donor to the acceptor molecule. However, in the case of the interdyad system, the change in photoluminescence quenching and the decay time is less significant due to different photophysical processes.
Key words: Clusters and Nanostructures
Supplementary material in the form of one pdf file available from the Journal web page at http://dx.doi.org/10.1140/epjd/e2014-50328-7
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014