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Title: Structural Studies of Amphiphilic 4-Helix Bundle Peptides Incorporating Designed Extended Chromophores for Nonlinear Optical Biomolecular Materials

Journal Article · · Nano Letters
DOI:https://doi.org/10.1021/nl062092h· OSTI ID:930134

Extended conjugated chromophores containing (porphinato)zinc components that exhibit large optical polarizabilities and hyperpolarizabiliites are incorporated into amphiphilic 4-helix bundle peptides via specific axial histidyl ligation of the metal. The bundle's designed amphiphilicity enables vectorial orientation of the chromophore/peptide complex in macroscopic monolayer ensembles. The 4-helix bundle structure is maintained upon incorporation of two different chromophores at stoichiometries of 1-2 per bundle. The axial ligation site appears to effectively control the position of the chromophore along the length of the bundle.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Organization:
Doe - Office Of Science
DOE Contract Number:
DE-AC02-98CH10886
OSTI ID:
930134
Report Number(s):
BNL-80780-2008-JA; TRN: US200822%%1198
Journal Information:
Nano Letters, Vol. 6, Issue 11
Country of Publication:
United States
Language:
English