Martín-Fuentes, CristinaUrgel, JoséEdalatmanesh, ShayanRodríguez Sánchez, EiderSantos Barahona, José ManuelMutombo, PingoBiswas, KalyanLauwaet, KoenGallego, José M.Miranda, RodolfoJelínek, PavelMartín León, NazarioÉcija, David2024-01-172024-01-172021Chem. Commun. 2021, 57, 7545–75481359-734510.1039/d1cc02058ghttps://hdl.handle.net/20.500.14352/93605Among the plethora of polycyclic structures that have emerged in recent years, indenofluorenes comprise a unique class of compounds due to their potential in organic electronic systems such as OLEDs, OFETs, and OPVCs. However, the synthesis of fully conjugated indenofluorenes without bulky groups on the apical carbons under standard chemistry conditions is not easily accessible. In this regard, on-surface synthesis has appeared as a newly developing field of research, which exploits the use of well-defined solid surfaces as confinement templates to initiate and develop chemical reactions. Here, we demonstrate the successful fabrication of indeno[1,2-b]fluorene p-conjugated polymers linked via cumulene-like connections on well-defined metallic surfaces under ultra-high vacuum conditions. The structure and electronic properties of the formed polymers have been precisely characterized by scanning tunneling microscopy, noncontact atomic force microscopy and scanning tunneling spectroscopy, complemented by computational investigationsengjournal article1364-548Xhttps://doi.org/10.1039/d1cc02058grestricted access547Química orgánica (Química)2306 Química Orgánica