Harnessing Polymer-Matrix-Mediated Manipulation of Intermolecular Charge-Transfer for Near-Infrared Security Applications

Harnessing Polymer-Matrix-Mediated Manipulation of Intermolecular Charge-Transfer for Near-Infrared Security Applications

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 38 vom: 21. Sept., Seite e2204749
1. Verfasser: Tian, Shuang (VerfasserIn)
Weitere Verfasser: Tan, Jihua, Kang, Tianxing, Cao, Chen, Pan, Jie, Xiao, Yafang, Cui, Xiao, Li, Shengliang, Lee, Chun-Sing
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article infrared photography intermolecular charge transfer near-infrared polymer matrix security
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520 |a Precise recognition of near-infrared (NIR) signals holds great prospects in optical communication, remote sensing, information security, and anti-counterfeiting. For these applications, filters with good NIR transparency are typically essential components. Currently, such NIR transparent filters are dominated by inorganic materials such as chalcogenide glasses. There are, so far, only a handful of organic molecules with suitable optical properties due to the rarity of organic materials with good NIR transparency and relatively flat absorption over the UV-visible region. Here, it is found that the library of NIR-transparent organic materials can be expanded by forming a charge-transfer complex (CTC) between a donor (D) and an acceptor (A) molecule that are commercially available. Via regulating the DA interaction, the CTC filter shows tunable absorption from the visible to NIR region with a relatively high penetration of NIR radiation (≈80%). The CTC filter can successfully highlight NIR information hidden in a complex environment and allow reading of NIR security images for advanced anti-counterfeiting. Moreover, the CTC filter can be used for viewing protected NIR information with good resolution, and thus provide a convenient tool for different security applications using NIR-encoded information 
650 4 |a Journal Article 
650 4 |a infrared photography 
650 4 |a intermolecular charge transfer 
650 4 |a near-infrared 
650 4 |a polymer matrix 
650 4 |a security 
700 1 |a Tan, Jihua  |e verfasserin  |4 aut 
700 1 |a Kang, Tianxing  |e verfasserin  |4 aut 
700 1 |a Cao, Chen  |e verfasserin  |4 aut 
700 1 |a Pan, Jie  |e verfasserin  |4 aut 
700 1 |a Xiao, Yafang  |e verfasserin  |4 aut 
700 1 |a Cui, Xiao  |e verfasserin  |4 aut 
700 1 |a Li, Shengliang  |e verfasserin  |4 aut 
700 1 |a Lee, Chun-Sing  |e verfasserin  |4 aut 
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773 1 8 |g volume:34  |g year:2022  |g number:38  |g day:21  |g month:09  |g pages:e2204749 
856 4 0 |u http://dx.doi.org/10.1002/adma.202204749  |3 Volltext 
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