## 2 Materials and Methods
### Synthesis of Triphenyl Imidazole Derivatives
2-(2-methoxyphenylyl)-4,5-diphenyl-1\(\cdot\)1\(H\)-imidazole **(6)**: Pale yellow powder (yield 93%). C\({}_{22}\)H\({}_{18}\)N\({}_{2}\)O. Mp = 200-202 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 1601 (C-C aromatic), 1480 (C-C aromatic), 1240 (C-O), 766 (C-H) cm\({}^{-1}\). \({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) 8: 10.48 (s, 1H), 8.48 (dd, 1H, \(J\) 1 = 8 Hz, \(J\) = 1.2 Hz), 7.66-7.49 (m, 4H), 7.33-7.23 (m, 7H), 7.11 (t, \(J\) = 7.6 Hz, 1H), 7.50 (d, \(J\) = 8.4 Hz, 1H), 3.99 (s, 3H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) 8: 155.65, 143.98, 129.46, 128.54, 127.72, 121.58, 118.05, 111.12, 55.80. GC-MS (_m/z_) = 326.3 [M]\(4-(4,5-diphenyl-1-\(H\)-imidazol-2-yl)-2-methoxyphenol (**7**): White powder (yield 92%). C\({}_{22}\)H\({}_{18}\)N\({}_{2}\)O\({}_{2}\). Mp = 246-248 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 3510 (O-H), 2996 (C-H), 1601 (C-C aromatic), 1496 (C-C aromatic), 1274 (C-O), 695 (C-H) cm\({}^{-1}\). \({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) \(\delta\): 7.57 (d, \(J\) = 1.6 Hz, 1H), 7.49 (d, \(J\) = 6.8 Hz, 4H), 7.36-7.23 (m, 7H), 6.88 (d, \(J\) = 8.4 Hz, 1H), 3.88 (s, 3H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) \(\delta\): 147.23, 146.75, 146.63, 132.47, 128.26, 127.91, 127.11, 121.78, 118.60, 114.76, 109.08, 55.71. GC-MS (\(m/z\)) = 342 [M]\({}^{+}\) (4), 341 (15), 311 (14), 295 (5), 165 (30), 105 (100), 77 (56), 44 (29). 2-(3,4-dimethoxyyphenyl)-4,5-diphenyl-1-\(H\)-imidazole **(8)**: White powder (yield 84%). C\({}_{23}\)H\({}_{20}\)N\({}_{2}\)O\({}_{2}\). Mp = 220-222 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 2959 (C-H), 1591 (C-C aromatic), 1495 (C-C aromatic), 1253 (C-O), 762 (C-H) cm\({}^{-1}\).\({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) \(\delta\): 7.60 (s, 1H), 7.49 (m, 5H), 7.32 (m, 6H), 6.88 (d, \(J\) = 8.4 Hz, 1H), 3.89 (s, 3H), 3.86 (s, 3H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) \(\delta\): 149.28, 148.90, 146.51, 132.66, 128.23, 127.90, 127.05, 122.95, 118.12, 111.00, 109.04, 55.68. GC-MS (\(m/z\)) = 356 [M]\({}^{+}\) (1), 342 (1), 281 (3), 207 (16), 193 (12), 176 (100), 165 (14), 69 (65). 2-(2-chlorophenylophenyl)-4,5-diphenyl-1-\(H\)-imidazole **(9)**: Pale yellow powder (yield 93%). C\({}_{21}\)H\({}_{15}\)ClN\({}_{2}\). Mp = 190-192 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 2924 (C-H), 1602 (C-C aromatic), 1479 (C-C aromatic), 763 (C-H), 696 (C-Cl) cm\({}^{-1}\). \({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) \(\delta\): 10.25 (s, 1H), 8.44 (dd, 1H, \(J_{1}\) = 7.6 Hz, \(J_{2}\) = 1.2 Hz), 7.66 (m, 2H), 7.47-7.25 (m, 1H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) \(\delta\): 143.20, 137.91, 134.57, 130.88, 130.48, 129.59, 129.57, 129.04, 129.02, 128.36, 128.06, 127.96, 127.79, 127.67, 127.52, 127.09. GC-MS (\(m/z\)) = 330 [M]\({}^{+}\) (18), 281 (18), 207 (65), 176 (71), 165 (61), 89 (35), 44 (100). 4-(4,5-diphenyl-1-\(H\)-imidazol-2-yl)-N,N-dimethylaniline **(10)**: Brown yellow powder (yield 83%). C\({}_{23}\)H\({}_{21}\)N\({}_{3}\). Mp = 234-236 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 3000 (C-H), 1618 (C-C aromatic), 1497 (C-C aromatic), 1200 (C-N), 765 (C-H), 696 (C-Cl) cm\({}^{-1}\). \({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) \(\delta\): 9.70 (s, 1H), 7.77 (d, \(J\) = 8.8 Hz, 2H), 7.51 (d, \(J\) = 7.2 Hz, 4H), 7.30-7.21 (m, 6H), 6.70 (d, \(J\) = 8.8 Hz, 2H), 2.96 (s, 6H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) \(\delta\): 150.74, 147.01, 132.98, 129.94, 129.06, 128.48, 127.85, 127.15, 126.56, 112.14, 40.32. GC-MS (\(m/z\)) = 339 [M]\({}^{+}\) (6), 325 (4), 313 (17), 269 (23), 178 (53), 165 (100), 89 (42), 77 (38). 2-(4-nitrophenyl)-4,5-diphenyl-1-\(H\)-imidazole **(11)**: Yellow powder (yield 90%). C\({}_{21}\)H\({}_{15}\)N\({}_{3}\)O\({}_{2}\). Mp = 230-232 \({}^{\circ}\)C. IR (KBr, cm\({}^{-1}\)) = 2923 (C-H), 1600 (C-C aromatic), 1519 (N-O), 1485 (C-C aromatic), 1339 (N-O), 765 (C-H) cm\({}^{-1}\). \({}^{1}\)H NMR (400 MHz, CDCl\({}_{3}\)) \(\delta\): 8.19 (d, \(J\) = 8.8 Hz, 2H), 8.06 (d, \(J\) = 8.8 Hz, 2H), 7.53-7.45 (m, 4H), 7.33 (m, 6H). \({}^{13}\)C NMR (100 MHz, CDCl\({}_{3}\)) \(\delta\): 147.03, 143.89, 135.83, 128.53, 128.04, 125.70, 124.14.