Polyazulene Based Materials for Heavy Metal Ions Detection. 4. Search for Conditions for Thiophen-Vinyl-Pyridine-Azulene Based CMEs Preparation. - Eleonora-Mihaela Ungureanu; Veronica Anastasoaie; Magdalena-Rodica Bujduveanu; Alina Giorgiana Brotea; Raluca Isopescu; Gabriela Stanciu (Symmetry, 2022)