RT Journal Article
T1 Consecutive complex aggregation pathway in covalent helical polymer-metal complexes: nanospheres with controlled P/M macroscopic chirality
A1 Tarrío, Juan José
A1 Hermida, Borja
A1 Rodríguez Riego, Rafael
A1 Crassous, Jeanne
A1 Quiñoá Cabana, Emilio
A1 Freire Iribarne, Félix Manuel
K1 Chirality
K1 CPL
K1 Dynamic Macroscopic
K1 Helical Polymer-metal Complexes
K1 Nanospheres Consecutive Mechanism
AB Kinetically trapped and thermodynamic nanospheres with opposite macroscopic P/M chirality and opposite circularly polarized luminescence (CPL) can be obtained from a single helical polymer-metal complex under the same environmental conditions. To prepare these nanospheres, a chiral poly(diphenylacetylene) (PDPA) [poly-(L)-1] with a large energy barrier between the P and M helical senses is chosen as source of chirality, while Ba2+ metal ions are selected as crosslinking agents. As a result, the poly-(L)-1/Ba2+ complex can generate both kinetically trapped (Agg1, M nanospheres) and thermodynamic (Agg2, P nanospheres) aggregates, which can be dispersed in the same solvent. Due to the high energy barrier of the helix inversion process for poly-(L)-1, the complete evolution from the kinetically trapped aggregate (Agg1, M nanospheres) to the thermodynamic one (Agg2, P nanospheres) takes more than 75 days at room temperature, which can be accelerated at higher temperatures. These nanospheres are stable and remain dispersed in solution for up to 8 months without further aggregation.
PB Wiley
SN 1613-6810
YR 2024
FD 2024-12
LK https://hdl.handle.net/10347/41164
UL https://hdl.handle.net/10347/41164
LA eng
NO Tarrío, J. J., Hermida, B., Rodríguez, R., Crassous, J., Quiñoá, E.,  Freire, F. (2024). Consecutive Complex Aggregation Pathway in Covalent Helical Polymer‐Metal Complexes: Nanospheres with Controlled P/M Macroscopic Chirality. "Small", vol. 21. nº 7
NO The authors thank Servicio de Microscopía Electrónica (RIAIDT, USC). Financial support from AEI (PID2022-136848NB-I00), E.Q. and F.F.; Ramón y Cajal contract RYC2022-035587-I, R.R.), Xunta de Galicia (ED431C 2022/21, Centro Singular de Investigación de Galicia acreditación 2023–2027, ED431G 2023/03, ED431G 2023/06) and the Euro- pean Regional Development Fund (ERDF) are gratefully acknowledged. J.J.T. thanks MICINN for a FPU contract. Funding for open access charge: Universidade de Vigo/CISUG
DS Minerva
RD 28 abr 2026