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Herein, a novel conformation\u2010mediated strategy is proposed to manipulate the condensed states of Co and C, as well as their interaction. The conformation of polyvinylpyrrolidone molecules is adjusted using a gradient methanol\/water ratio, whereby the coordination dynamic equilibrium effectively governs the deposition of metal\u2013organic framework precursors. This process ultimately influences the combined impact of derived Co and C in the resulting Co\/C nanocomposites post\u2010pyrolysis. The experimental results show that the condensed state structure of Co\/C nanocomposites transitions from agglomerate state \u2192 to biphasic compact state \u2192 to loose packing state. Benefiting from the tunable collaboration between interfacial polarization and defects polarization, and the appropriate electrical conductivity, the diphasic compact state of Co\/C nanocomposites achieves an effective absorbing bandwidth of 7.12\u00a0GHz (2.1\u00a0mm) and minimum reflection loss of \u221232.8\u00a0dB. This study highlights the significance of condensed state manipulation in comprehensively regulating the EM wave absorption characteristics of carbon\u2010based magnetic metal nanocomposites, encompassing factors such as conductivity loss, magnetic loss, defect polarization, and interface polarization.<\/jats:p>","DOI":"10.1002\/smll.202402078","type":"journal-article","created":{"date-parts":[[2024,5,3]],"date-time":"2024-05-03T05:01:12Z","timestamp":1714712472000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Co\/C Nanocomposites with Tunable Condensed States Induced by Conformation\u2010Mediated Strategy for Electromagnetic Wave Absorption"],"prefix":"10.1002","author":[{"given":"Mengyao","family":"Cui","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tianen","family":"Wu","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenguo","family":"Gao","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shengchong","family":"Hui","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Material Physics and Chemistry under Extraordinary School of Physical Science and Technology Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yu","family":"Wei","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaoqiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5575-3224","authenticated-orcid":false,"given":"Hongjing","family":"Wu","sequence":"additional","affiliation":[{"name":"MOE Key Laboratory of Material Physics and Chemistry under Extraordinary School of Physical Science and Technology Northwestern Polytechnical University  Xi'an 710072 China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,5,2]]},"reference":[{"key":"e_1_2_8_1_1","doi-asserted-by":"publisher","DOI":"10.1002\/adma.202304182"},{"key":"e_1_2_8_2_1","first-page":"9","volume":"17","author":"Wang L.","year":"2021","journal-title":"Small"},{"key":"e_1_2_8_3_1","first-page":"12","volume":"33","author":"Zhao B.","year":"2023","journal-title":"Adv. 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