[2+2] Cyclo-Addition Reactions for Efficient Polymerization on a HOPG Surface at Ambient Conditions

• Published in: Nanomaterials (Basel, Switzerland) Vol. 12; no. 8; p. 1334
• Main Authors: Guan, Lihao, Palmino, Frank, Lacroix, Jean-Christophe, Chérioux, Frédéric, Sun, Xiaonan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 13-04-2022; MDPI
• Subjects: 1D polymers; Addition polymerization; Analytical chemistry; Atmospheric chemistry; Chemical Sciences; Chromatography; cyclo-addition; Graphite; Hydrocarbons; on-surface synthesis; Photochemicals; Polymerization; Polymers; Scanning tunneling microscopy; scanning tunnelling microscopy; Self-assembly; Solvents; Surface chemistry; France; scanning tunnelling microscopy; on-surface synthesis; cyclo-addition; 1D polymers; HOPG Surface; Polymerization; Ambient conditions
• ISSN: 2079-4991; 2079-4991
• DOI: 10.3390/nano12081334

Polymers obtained by on-surface chemistry have emerged as a class of promising materials. Here, we propose a new strategy to obtain self-assembled 1D polymers by using photochemical [2+2] cyclo-addition or by using a mild thermal annealing. All nanostructures are fully characterized by using scanning tunneling microscopy at ambient conditions on a graphite surface. We demonstrated that nature of the stimulus strongly alters the overall quality of the resulting polymers in terms of length and number of defects. This new way is an efficient method to elaborate on-surface self-assembled 1D polymers.