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Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
Conjugated Microporous Polymer  
Tapas Kumar Maji, Syamantak Roy 
Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
Application type:
Applied - 2017-11-13 
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Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Bengaluru 
Herein we put forward a design approach for the synthesis of metal-free porous conjugated microporous polymers (CMPs) acting as catalysts for electrochemical oxygen reduction reaction (ORR). This includes the careful strategy of linking donor-acceptor struts to generate two new structurally well characterized and semi-conducting, electrochemically active CMPs. The use of a tripheynlamine derivative as a donor for both the CMPs not only allows facile electron conduction but also provides active sites for O2 to bind and undergo reduction to OH-. TPA-BPCMP (1) and TPA-TPECMP (2) show onset potentials of 0.80 V and 0.82 respectively. Along with exceptional current stability, these metal free systems compare well with other carbon and metal-doped carbon hybrid materials. To the best of our knowledge, this is a first report of entirely metal free CMPs showing excellent ORR activity. Although the activity is still far from commercial platinum, it could pave the way towards the design of more such low cost and efficient porous organic frameworks for applications in fuel cells.  

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