In situ chemichromic studies of interactions between a lutetium bis-octaalkyl-substituted phthalocyanine and selected biological cofactors by C. Pal, A. N. Cammidge, M. J. Cook, J. L. Sosa-Sanchez, A. K. Sharma, and A. K. Ray Interface Volume 9(66): January 7, 2012 ©2012 by The Royal Society

(a) Structural representation of bis[1,4,8,11,15,18,22,25-octakis(octyl)phthalocyaninato] lutetium(III), R16Pc2Lu, R = C8H17 (octyl) chains, (b) AFM image of R16Pc2Lu film surface and (c) thickness scale. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

Electronic absorption spectra of R16Pc2Lu as (a) neutral film, (b) Br2-oxidized film and (c) neutral species in solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

Plots of stability of Br2-oxidized film of R16Pc2Lu after (a) 3 h, (b) 1 day, (c) 5 days, (d) 13 days of oxidation. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

UV–visible absorption spectral changes as a function of time (indicated by arrows) during neutralization of R16Pc2Lu+ by water in the presence of a 1.5 M LiClO4 aqueous solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

UV–visible absorption spectral changes as a function of time (indicated by arrows) of R16Pc2Lu+ in 3 mM NADH dissolved in a 1.5 M LiClO4 aqueous solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

UV–visible absorption spectral changes as a function of time (indicated by arrows) of R16Pc2Lu+ in 3.5 mM vitamin C in a 1.5 M LiClO4 aqueous solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

Plot of ln(At − A∞) versus time for 3 mM NADH (dashed line) and 3.5 mM vitamin C (solid line) in a 1.5 M LiClO4 aqueous solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society

Plot of kobs versus concentration of NADH (dashed line) and vitamin C (solid line) in a 1.5 M LiClO4 aqueous solution. C. Pal et al. J. R. Soc. Interface 2012;9: ©2012 by The Royal Society