biostudies-literatureChen ZNatural Science Foundation of Beijing Municipality (Beijing Natural Science Foundation)National Natural Science Foundation of China (National Science Foundation of China)251https://www.ebi.ac.uk/biostudies/studies/S-EPMC12290042biostudies-literatureUnknown14(1)Recently, colloidal quantum dots (QDs) with high luminescent efficiency and tunable colors have become ideal materials for next-generation display devices. Direct photolithography is a powerful tool for patterning QD devices, but it faces the serious issue of degradation in the photophysical properties of the patterned QDs. Here, we use relatively rigid cyclopentane as a bridging group to design the crosslinker CPTA, achieving high-resolution direct photolithography of QDs with nearly nondestructive under ambient conditions. The key to the crosslinker design is the introduction of a rigid bridging group that elevates the LUMO level, providing a stronger energy barrier to prevent QD electrons from being trapped or undergoing non-radiative recombination, thus preserving their PL and EL propeLight, science & applicationsRigid crosslinker-assisted nondestructive direct photolithograph for patterned QLED displays.PMC1229004222405016Z220007Rao SChen ZWang STang ATeng FZhao JZhang RMan ZfalseRigid crosslinker-assisted nondestructive direct photolithograph for patterned QLED displays.Recently, colloidal quantum dots (QDs) with high luminescent efficiency and tunable colors have become ideal materials for next-generation display devices. Direct photolithography is a powerful tool for patterning QD devices, but it faces the serious issue of degradation in the photophysical properties of the patterned QDs. Here, we use relatively rigid cyclopentane as a bridging group to design the crosslinker CPTA, achieving high-resolution direct photolithography of QDs with nearly nondestructive under ambient conditions. The key to the crosslinker design is the introduction of a rigid bridging group that elevates the LUMO level, providing a stronger energy barrier to prevent QD electrons from being trapped or undergoing non-radiative recombination, thus preserving their PL and EL prope2025-01-01T00:00:00Z2025 Jul2026-03-15T17:18:21.168Z2025-08-13T03:04:09.069ZS-EPMC122900424070745910.1038/s41377-025-01918-7