G.  Das, Biswal, B. P., Kandambeth, S., Venkatesh, V., Kaur, G., Addicoat, M. A., Heine, T., Verma, S., and Banerjee, R., ?Chemical sensing in two dimensional porous covalent organic nanosheets?, Chemical Science, vol. 6, no. 7, pp. 3931-3939, 2015.