RT Conference Proceedings
T1 Polyconjugation from molecular spectroscopy
A1 Medina Rivero, Samara
K1 Espectroscopía Raman
K1 Química física
AB The discovery of the semiconducting properties of π-conjugated organic oligomersand polymers has been a turning point in the development of new electronic devicesand transformed the study of these systems in an emerging research field. Since then,many efforts have been devoted to generate structural features that bring about newand outstanding properties for optoelectronics, spintronics and magnetic devices, nonlinear optics, or singlet fission processes. Since the behavior of the π-electronsdetermines the properties of these molecules, establishing not only the electrondelocalization mechanism and its extension, but also which factors disturb the πelectron density is of utmost importance to enhance the proper performance of thesematerials and develop ad hoc synthesis for desired application. In this context, the coexistence of alternative π-electron delocalization frameworks with the main linearlyconjugated sequence must be considered as the existence of contributing resonancestructures can modify significantly the optical, electronic and molecular properties ofthe system under study.In this communication, three different policonjugation patterns are addressed andtheir influence on the π-systems is revealed through electronic and vibrationalspectroscopies. Through-bond π-electron delocalization is exemplified by moleculeswith cross-conjugated and parallelly-conjugated frameworks. For the former, the two πconjugated pathways compete for the π-electron density in the common sections of themolecule. Conversely, parallel π-conjugated sequences do not share any fragment. Onthe other hand, through-space π-conjugation is demonstrated in spiro molecules, inwhich a proper spatial configuration allows the interaction between π-conjugatedmoieties disconnected by an insulating atom.
YR 2022
FD 2022-03
LK https://hdl.handle.net/10630/23916
UL https://hdl.handle.net/10630/23916
LA eng
NO Abstract de la comunicación oral
NO RSEQUniversidad de Málaga. Campus de Excelencia Internacional Andalucía Tech
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026