A π-gel scaffold for assembling fullerene to photoconducting supramolecular rods.
Nonequilibrium self-assembly of molecules holds a huge prospect as a tool for obtaining new-generation materials for future applications. Crystallization of neutral molecules within a supramolecular gel matrix is one example in which two nonequilibrium processes occur orthogonal to each other. On the other hand, electronically interacting donor-acceptor two-component systems are expected to form phase-miscible hybrid systems. Contrary to the expectation, we report the behavior of a π-gel, derived from oligo(p-phenylenevinylene), OPVA, as a scaffold for the phase separation and crystallization of fullerene (C60) to supramolecular rods with increased transient photoconductivity (φƩμmax= 2.4 × 10-4cm2V-1s-1). The C60supramolecular rods in the π-gel medium exhibited high photocurrent in comparison to C60loaded in a non-π-gel medium. This finding provides an opportunity for large-scale preparation of micrometer-sized photoconducting rods of fullerenes for device application.
Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India.; Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India.
Vishnu Sukumaran
VS
Nair
Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India.; Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India.
Rahul Dev
0000-0003-0802-5344
RD
Mukhopadhyay
Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
Akinori
A
Saeki
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan.
Shu
0000-0001-7851-4405
S
Seki
Photosciences and Photonics Section, Chemical Sciences and Technology Division, Council of Scientific and Industrial Research-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram 695019, India.; Academy of Scientific and Innovative Research, CSIR-NIIST Campus, Thiruvananthapuram 695019, India.
Ayyappanpillai
A
Ajayaghosh
Self-assembly; crystallization; fullerene; gels; p-n heterojunctions; photoconductivity; self-sorting
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