['Despite', 'the', 'loss', 'of', 'directed', ',', 'self', '-', 'complementary', 'hydrogen', 'bonding', 'through', 'alkylation', 'of', 'the', 'imidazole', 'ring', ',', 'electrostatic', 'aggregation', 'of', 'imidazolium', 'salts', 'is', 'a', 'tunable', ',', 'self', '-', 'assembly', 'process', ',', 'which', 'is', 'instrumental', 'to', 'several', 'applications', '.']