![]() Xiaoshuai Zhang, Teng Li, Cong Yu, Weiqiang Miao, Hui Wang, Yiwei Fu, Bojun Zhou, Dan Liu, Wei Li, Tao Wang.Transformation of Perovskite Nanoplatelets to Large Nanostructures Driven by Solvent Polarity. DuBose, Andrew Christy, Jishnudas Chakkamalayath, Prashant V. The Journal of Physical Chemistry Letters 2022, 13 Scratching the Surface: Passivating Perovskite Nanocrystals for Future Device Integration. VanOrman, Rachel Weiss, Megan Medina, Lea Nienhaus. Colloidal Quantum Shells: An Emerging 2D Semiconductor for Energy Applications. James Cassidy, Dulanjan Harankahage, Dmitry Porotnikov, Anton V.Förster Resonance Energy Transfer Assisted Enhancement in Optoelectronic Properties of Metal Halide Perovskite Nanocrystals. Leepsa Mishra, Ranjan Kumar Behera, Aradhana Panigrahi, Manas Kumar Sarangi.ACS Applied Materials & Interfaces 2022, 14 Triplet Energy Transfer from Lead Halide Perovskite for Highly Selective Photocatalytic 2 + 2 Cycloaddition. Yixiong Lin, Mariana Avvacumova, Ruilin Zhao, Xihan Chen, Matthew C.Efficacy of Perovskite Photocatalysis: Challenges to Overcome. Energy Versus Electron Transfer: Managing Excited-State Interactions in Perovskite Nanocrystal–Molecular Hybrids. The Journal of Physical Chemistry A 2023, 127 Excited State and Transient Chemistry of a Perylene Derivative (DBP). Jishnudas Chakkamalayath, Gábor Szabó, Jeffrey T.Ligand Chemistry of Inorganic Lead Halide Perovskite Nanocrystals. Nadesh Fiuza-Maneiro, Kun Sun, Iago López-Fernández, Sergio Gómez-Graña, Peter Müller-Buschbaum, Lakshminarayana Polavarapu.The Journal of Physical Chemistry Letters 2023, 14 Charge Transport Dynamics of Quasi-Type II Perovskite Janus Nanocrystals in High-Performance Photoconductors. Lin Zhang, Hengwei Qiu, Ran Shi, Jinsong Liu, Guangliu Ran, Wenkai Zhang, Genban Sun, Run Long, Weihai Fang.Journal of the American Chemical Society 2023, 145 How Pendant Groups Dictate Energy and Electron Transfer in Perovskite–Rhodamine Light Harvesting Assemblies. Energy Funneling from Water-Dispersed Perovskites to Chromophores. Pooja Aggarwal, Anubhab Halder, Neelakshi, Ramesh Ramapanicker, Vishal Govind Rao.Journal of the American Chemical Society 2023, Article ASAP. Colloidal-ALD-Grown Metal Oxide Shells Enable the Synthesis of Photoactive Ligand/Nanocrystal Composite Materials. Albertini, Anna Loiudice, Raffaella Buonsanti. This article is cited by 23 publications. The ease of tuning optical properties through halide exchange of the nanocrystal donor provides a unique platform for studying and tailoring excited-state interactions in perovskite–chromophore assemblies. These results highlight the importance of optimizing both the donor and acceptor properties to design light-harvesting assemblies that employ energy transfer. For CsPbBr 3-RhB, the rate constant for energy transfer ( k ET) agrees well with Förster theory, whereas alloying with chloride to produce chloride-rich CsPb(Br 1– xCl x) 3 favors a Dexter mechanism. This allowed us to tune the spectral overlap between the donor CsPb(Br 1– xCl x) 3 emission and acceptor RhB absorption. To understand whether the energy transfer occurs through a Förster or Dexter mechanism, we leveraged facile halide-exchange reactions to tune the optical properties of the donor CsPbBr 3 by alloying with chloride. Transient absorption spectroscopy shows that this energy transfer occurs on the ∼200 ps time scale. PL studies reveal quenching of the CsPbBr 3 emission with a concomitant enhancement of the fluorescence of RhB, indicating a singlet-energy-transfer mechanism. Using a combination of steady-state and time-resolved absorption and photoluminescence (PL) experiments, we have probed the excited-state interactions in the CsPbBr 3–Rhodamine B (RhB) hybrid assembly. Directing the flow of energy and the nature of the excited states that are produced in nanocrystal–chromophore hybrid assemblies is crucial for realizing their photocatalytic and optoelectronic applications.
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