Detection of molecular-shape recognition for polycyclic aromatic hydrocarbons by alpha-helical poly(L-alanine) on silica

摘要

alpha-Helical poly(L-alanine) grafted onto porous silica particles with a reactive terminal trimethoxysilyl group showed a specific shape-selective retention for polycyclic aromatic hydrocarbons, recognizing their molecular linearities and slenderness. This selectivity is derived from the carbonyl groups on the rigid secondary structure and thus the poly(L-leucine) derivative having bulky residual groups showed almost no similar selectivity. [References: 5]