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. Author manuscript; available in PMC: 2009 Nov 1.
Published in final edited form as: Small. 2008 Nov;4(11):2043–2050. doi: 10.1002/smll.200701275

Table 1.

Characterization of poly(Histidine-co-Phenylalanine).

Polymer Monomer mole feed ratio M‒n* Phe mol% in polymer pKb Buffering pH range
His Phe
PHP(10) 99 1 5260 10 6.7 8.2-4.8
PHP(16) 95 5 5080 16 6.3 7.6-4.7
PHP(22) 90 10 5300 22 5.7 6.5-4.0
PHP(27) 80 20 5480 27 4.8 5.8-3.2
*

The number average molecular weight of polymers was determined by 1H-NMR.