RT Journal Article
T1 Boosting photoconductivity by increasing the structural complexity of multivariate covalent organic frameworks
T2 Potenciación de la fotoconductividad mediante el aumento de la complejidad estructural de las redes orgánicas covalentes multivariantes
A1 Gordo Lozano, Marta
A1 Martínez Fernández, Marcos
A1 Prasad Paitandi, Rajendra
A1 Martínez, José I.
A1 Seki, Shu
A1 Segura Castedo, José Luis
AB The assessment of the photoconductivity of Donor-Acceptor (D-A) ordered bulk heterojunctions is gaining attention for the development of innovative organic semiconductors in optoelectronics. Here, the synthesis of pyrene-based (D) Covalent Organic Frameworks, achieve through a multivariate reaction involving two distinct acceptors is reported (A). The products are characterized using powder x-ray diffraction, N2 sorption isotherms, electronic microscopy, and in silico calculations, among other techniques. These characterizations reveal that the multicomponent synthesis enables the modification of properties (e.g., bandgap) of the framework while preserving its structural features, such as crystallinity and porosity. The ordered D-A arrays position these materials as promising candidates for photoconductive semiconductors, particularly regarding the variation in the composition of isotopological frameworks. Photoconductivity experiments demonstrate a volcano-type correlation with respect to the A moiety content, with the optimal value reaching 7.9 × 10−5 cm2 V−1 s−1 for the bare NIP25%-COF. This study illustrates how introducing diverse acceptor units through multivariate synthesis can enhance the photoconductivity of these materials via “defect” engineering, without sacrificing their crystalline or porous characteristics and avoiding the need for de novo synthesis.
SN 1613-6810
SN 1613-6829
YR 2024
FD 2024-11-20
LK https://hdl.handle.net/20.500.14352/112408
UL https://hdl.handle.net/20.500.14352/112408
LA eng
NO Gordo-Lozano M, Martínez-Fernández M, Paitandi RP, Martínez JI, Segura JL, Seki S. Boosting Photoconductivity by Increasing the Structural Complexity of Multivariate Covalent Organic Frameworks. Small. 2024 Nov 20:e2406211. doi: 10.1002/smll.202406211
NO Ministerio de Ciencia e Innovación
DS Docta Complutense
RD 20 dic 2025