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Moreover, one of the brain's remarkable properties is its ability to process complex information by resolving it on different timescales. In synapse\u2010emulating artificial devices, some form of memory (e.g., hysteresis in current\u2013voltage characteristics) is required. One of the important characteristics of biological synapses is the coexistence of short\u2010 and long\u2010term memory, also called plasticity. However, a broader exploration of memory at multiple timescales in materials remains limited. Herein, the first example of synaptic transistors utilizing colloidal quantum dots (CQDs) as active material is reported. It is demonstrated that PbS\u2010CQDs, with metal halide and perovskite\u2010like ligands, are ideal as an active material for synaptic transistors exhibiting both short\u2010 and long\u2010term plasticity. Most interestingly, by changing the chemistry of the quantum dot outer monolayer, a drastic change in the temporal response of the learning is observed, demonstrating the possibility of engineering materials exhibiting learning at multiple timescales, similar to the biological synapses.<\/jats:p>","DOI":"10.1002\/aisy.202300218","type":"journal-article","created":{"date-parts":[[2023,8,27]],"date-time":"2023-08-27T22:50:18Z","timestamp":1693176618000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Lead Sulfide Quantum Dots for Synaptic Transistors: Modulating the Learning Timescale with Ligands"],"prefix":"10.1002","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5432-5204","authenticated-orcid":false,"given":"Karolina","family":"Tran","sequence":"first","affiliation":[{"name":"Photophysics and OptoElectronics Zernike Institute for Advanced Materials University of Groningen  Nijenborgh 4 9747 AG Groningen The Netherlands"},{"name":"Groningen Cognitive Systems and Materials Centre (CogniGron) University of Groningen  9747 AG Groningen The Netherlands"}]},{"given":"Han","family":"Wang","sequence":"additional","affiliation":[{"name":"Photophysics and OptoElectronics Zernike Institute for Advanced Materials University of Groningen  Nijenborgh 4 9747 AG Groningen The Netherlands"}]},{"given":"Meike","family":"Pieters","sequence":"additional","affiliation":[{"name":"Photophysics and OptoElectronics Zernike Institute for Advanced Materials University of Groningen  Nijenborgh 4 9747 AG Groningen The Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7985-7431","authenticated-orcid":false,"given":"Maria Antonietta","family":"Loi","sequence":"additional","affiliation":[{"name":"Photophysics and OptoElectronics Zernike Institute for Advanced Materials University of Groningen  Nijenborgh 4 9747 AG Groningen The Netherlands"},{"name":"Groningen Cognitive Systems and Materials Centre (CogniGron) University of Groningen  9747 AG Groningen The Netherlands"}]}],"member":"311","published-online":{"date-parts":[[2023,8,27]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.3390\/su10093027"},{"key":"e_1_2_8_3_1","volume-title":"Energy-Efficient Cloud Computing Technologies and Policies for an Eco-Friendly Cloud Market. 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