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A Nanoporous Cytochrome c Film with Highly Ordered Porous Structure for Sensing of Toxic Vapors
Author(s) -
Lawrence Geoffrey,
Kalimuthu Palraj,
Benzigar Mercy,
Shelat Kinnari J.,
Lakhi Kripal S.,
Park DaeHwan,
Ji Qingmin,
Ariga Katsuhiko,
Bernhardt Paul V.,
Vinu Ajayan
Publication year - 2017
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201702295
Subject(s) - nanoporous , biomolecule , materials science , porosity , nanotechnology , cytochrome c , nanopore , adsorption , template , polystyrene , spheres , molecule , chemical engineering , organic chemistry , polymer , chemistry , biochemistry , physics , astronomy , engineering , mitochondrion , composite material
Creating well‐ordered nanoporosity in biomolecules promises stability and activity, offering access to an even wider range of application possibilities. Here, the preparation of nanoporous protein films containing cytochrome c protein molecules is reported through a soft‐templating strategy using polystyrene (PS) spheres of different sizes as templates. The stability of the cytochrome c film is demonstrated through electrochemistry studies to show a reusable nature of these films over a long period of time. The size of the PS spheres is varied to tune the pore diameter and the thickness of the cytochrome c films, which are quite stable and highly selective for sensing toxic acidic vapors. The fusion of the templating strategy and the self‐assembly of biomolecules may offer various possibilities by generating a new series of porous biomolecules including enzymes with different molecular weights and diameters, peptides, antibodies, and DNA with interesting catalytic, adsorption, sensing, and electronic properties.