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1. Photo-induced halide redistribution in 2D halide perovskite lateral heterostructures

   https://doi.org/10.1016/j.joule.2023.08.003  

   Luo, Yanqi ; Zhang, Shuchen ; Chen, Jia-Shiang ; Ma, Xuedan ; Ma, Ke ; Deng, Junjing ; Jiang, Yi ; Li, Luxi ; Lai, Barry ; Chen, Si ; et al ( October 2023 , Joule)
2. Studying Hydrogen–Halide Interactions in Lead Halide Perovskite with Isoelectronic Cations

   https://doi.org/10.1021/acs.chemmater.3c01149  

   Huang, Yunping ; Shi, Yangwei ; Cohen, Theodore A. ; Ho, Kevin ; Luscombe, Christine K. ( October 2023 , Chemistry of Materials)
3. Halide Ion Microhydration: Structure, Energetics, and Spectroscopy of Small Halide–Water Clusters

   https://doi.org/10.1021/acs.jpca.9b00816  

   Bajaj, Pushp ; Riera, Marc ; Lin, Jason K. ; Mendoza Montijo, Yaira E. ; Gazca, Jessica ; Paesani, Francesco ( March 2019 , The Journal of Physical Chemistry A)
4. Accelerating the discovery of alkyl halide-derived natural products using halide depletion

   https://doi.org/10.1038/s41557-023-01390-z  

   Glasser, Nathaniel R. ; Cui, Dongtao ; Risser, Douglas D. ; Okafor, C. Denise ; Balskus, Emily P. ( January 2024 , Nature Chemistry)

   Even in the genomic era, microbial natural product discovery workflows can be laborious and limited in their ability to target molecules with specific structural features. Here we leverage an understanding of biosynthesis to develop a workflow that targets the discovery of alkyl halide-derived natural products by depleting halide anions, a key biosynthetic substrate for enzymatic halogenation, from microbial growth media. By comparing the metabolomes of bacterial cultures grown in halide-replete and deficient media, we rapidly discovered the nostochlorosides, the products of an orphan halogenase-encoding gene cluster fromNostoc punctiformeATCC 29133. We further found that these products, a family of unusual chlorinated glycolipids featuring the rare sugar gulose, are polymerized via an unprecedented enzymatic etherification reaction. Together, our results highlight the power of leveraging an understanding of biosynthetic logic to streamline natural product discovery.

    

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5. Iodine Electrochemistry Dictates Voltage‐Induced Halide Segregation Thresholds in Mixed‐Halide Perovskite Devices

   https://doi.org/10.1002/adfm.202203432  

   Xu, Zhaojian ; Kerner, Ross A. ; Berry, Joseph J. ; Rand, Barry P. ( June 2022 , Advanced Functional Materials)

   Owing to straightforward stoichiometry–bandgap tunability, mixed‐halide perovskites are ideal for many optoelectronic devices. However, unwanted halide segregation under operational conditions, including light illumination and voltage bias, restricts practical use. Additionally, the origin of voltage‐induced halide segregation is still unclear. Herein, a systematic voltage threshold study in mixed bromide/iodide perovskite devices is performed and leads to observation of three distinct voltage thresholds corresponding to the doping of the hole transport material (0.7 ± 0.1 V), halide segregation (0.95 ± 0.05 V), and degradation (1.15 ± 0.05 V) for an optically stable mixed‐halide perovskite composition with a low bromide content (10%). These empirical threshold voltages are minimally affected by composition until very Br‐rich compositions, which reveals the dominant role of iodide/triiodide/iodine electrochemistry in voltage‐induced Br/I phase separation and transport layer doping reactions in halide perovskite devices.

    

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