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About Overview Organization & Management Strategy Open Positions Movie Library Access Research Structure Researchers & Laboratories Research Areas Three Advanced Target Projects Collaboration Achievements Press Releases Media & Award AIMResearch Publications Topics News Seminars & Symposium International Satellites International Partner Institutions Inter-Faculty Exchange Agreements Researcher Exchange Programs Support Support Systems For International Researchers (IAC) For Visitors Researchers for Visitors for Researchers for Enterprise Access AIMR Fund Japanese Research Highlights Chiral optics: Helical ribbons templates for chiral perovskite nanocrystal growth 02/26/2024 Crystallization in helical nano-cage to create mesoscopic chiral objects with chiroptical properties Dr. Reiko Oda, the corresponding author of the article Chiral optics aims to understand and manipulate interactions between chiral light and chiral materials, with the goal of advancing applications in chiral sensing, optical communication, bioimaging, and drug development. Because chirality in light provides complementary information to that characterized by wavelength and intensity, one emerging strategy uses this approach to target mesoscopic chiral structures, as their size range within the visible light wavelength (10 nm to 1 µm) promises enhanced chiral optical effects. However, a major challenge to this strategy is the difficulty in fabricating mesoscopic structures with precise morphologies, because the scale of these objects lies just out of reach of the capabilities of both traditional bottom-up and top-down fabrication methods. In a 2023 article, Oda and co-workers addressed this problem with a unique approach that utilizes the nanospace within self-assem bled nanometric helical silica ribbons as templates for growing perovskite nanocrystals (PNCs) by recrystallization methods1. Using supersaturated solutions of Cs+, Pb2+, and Br– precursors, the resulting helical PNCs not only had precise chiral morphologies at nanometric level, but they also showed remarkable chiroptical properties, including strong circular dichroism and strong induced circularly polarized luminescence. “Our work showed that mesoscopic helical PNCs with tailored chiral optical properties can be fabricated by combining established self-assembled templates with straightforward recrystallization methods without any chiral-ligand or chiral-molecule precursors,” says Oda. “To the best of our knowledge, this is a feat that has never been demonstrated before.” A future direction will use this approach to fabricate 2D or 3D supra-object structures to target chiral-light chiral, including the exaltation/annulation of chiral optical signals. (Author: Patrick Han) References Liu P., Battie Y., Kimura T., Okazaki Y., Pranee P., Wang H., Pouget E., Nlate S., Sagawa T. and Oda R. Chiral perovskite nanocrystal growth inside helical hollow silica nanoribbons Nano Letters 23, 3174 (2023). | article This research highlight has been approved by the authors of the original article and all information and data contained within has been provided by said authors. keywords chiral optics perovskite nanocrystals mesoscopic structures circular dichroism circularly polarized luminescence Tweet more Research Highlights Achievements Press Releases 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 Media & Award 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 AIMResearch About AIMResearch Research Highlights 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 In the Spotlight 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 Email Alert Sign up Publications Headlines 2024/05/22 Machine Learning Accelerates Discovery o... 2024/05/16 New Data-Driven Model Rapidly Predicts D... 2024/05/15 Researchers Unlock Vital Insights into M... Seminars & Symposium 2024/05/01 [5/1] The 5th “AIMR Seminar” 2024/04/26 [4/26] The 4th “AIMR Seminar” [5/10] The 6th “AIMR Seminar” AIMResearch PDF Research Highlights 2021 Download a FREE PDF of AIMResearch 2021 Download previous issue AIMResearch 2021 AIMResearch 2020 AIMResearch 2019 AIMResearch 2018 AIMResearch 2017 AIMResearch 2016 AIMResearch 2015 AIMResearch 2014 AIMResearch 2013 AIMResearch 2012 AIMResearch 2011 AIMResearch 2010 AIMResearch 2009 Home Research AIMResearch Research Highlights 2024 Chiral optics: Helical ribbons templates for chiral perovskite nanocrystal growth TOHOKU UNIVERSITY World Premier International Research Center Initiative For AIMR Members Link Site map Copyright © 2020 Tohoku University. All Rights Reserved.