Citation: Hang Meng, Bicheng Zhu, Ruolun Sun, Zixuan Liu, Shaowen Cao, Kan Zhang, Jiaguo Yu, Jingsan Xu. Dynamic photoluminescence switching of carbon nitride thin films for anticounterfeiting and encryption[J]. Chinese Journal of Structural Chemistry, ;2024, 43(10): 100410. doi: 10.1016/j.cjsc.2024.100410 shu

Dynamic photoluminescence switching of carbon nitride thin films for anticounterfeiting and encryption

Photoluminescence (PL) has been increasingly applied in anticounterfeiting and encryption as counterfeiting becomes more prevalent. However, common luminescent encryption techniques are based on static PL measurements and are easy to counterfeit. In this work, we have developed a thermal vapor deposition (TVD) approach using melem as the unique starting material to synthesize highly homogeneous carbon nitride (CN) thin films featuring unique dynamic PL switching properties. After being irradiated by a white LED, the blue PL intensity of the CN film increases significantly and then fades in darkness, demonstrating excellent recyclability. Experimental results prove that CN films contain cyano groups in the structure, and density functional theory (DFT) calculations indicate that the integration of cyano groups results in traps within the bandgap of CN, suggesting that the dynamic PL switching effect is essentially associated with the fullness of the trap states. We have therefore developed an advanced luminescent device for the secure transmission of encrypted information through controlled illumination. It can be easily read with a portable UV (365 nm) lamp and effectively erased using the white LED, thereby preventing information leakage and showing great potential for many applications.
- Thermal vapor deposition,
- Carbon nitride film,
- Dynamic photoluminescence,
- Encryption
1. [1]
  Canglong Li , Tao Liao , Dongping Chen , Tiancheng You , Xiaozhi Jiang , Minghan Xu , Huaming Yu , Gang Zhou , Guanghui Li , Yuejiao Chen . Fabrication of carbon-coated V₂O_5-x nanoparticles by plasma-enhanced chemical vapor deposition for high-performance aqueous zinc-ion battery composite cathodes. Chinese Chemical Letters, 2025, 36(12): 110557-. doi: 10.1016/j.cclet.2024.110557
2. [2]
  Ping Wang , Chunmao Chen , Hongwei Ren , Erhong Duan . A review of carbon dots in synthesis strategies, photoluminescence mechanisms, and applications in wastewater treatment. Chinese Chemical Letters, 2025, 36(9): 110725-. doi: 10.1016/j.cclet.2024.110725
3. [3]
  Pei Cao , Yilan Wang , Lejian Yu , Miao Wang , Liming Zhao , Xu Hou . Dynamic asymmetric mechanical responsive carbon nanotube fiber for ionic logic gate. Chinese Chemical Letters, 2024, 35(6): 109421-. doi: 10.1016/j.cclet.2023.109421
4. [4]
  Yiqiao Chen , Ao Liu , Biwen Yang , Zhenzhen Li , Binggang Ye , Zhouyi Guo , Zhiming Liu , Haolin Chen . Photoluminescence and photothermal conversion in boric acid derived carbon dots for targeted microbial theranostics. Chinese Chemical Letters, 2024, 35(9): 109295-. doi: 10.1016/j.cclet.2023.109295
5. [5]
  Zixi Zou , Jingyuan Wang , Yian Sun , Qian Wang , Da-Hui Qu . Controlling molecular assembly on time scale: Time-dependent multicolor fluorescence for information encryption. Chinese Chemical Letters, 2024, 35(7): 108972-. doi: 10.1016/j.cclet.2023.108972
6. [6]
  Wen-Jun Xia , Yong-Jiang Wang , Yun-Fei Cao , Cai Sun , Xin-Xiong Li , Yan-Qiong Sun , Shou-Tian Zheng . A luminescent folded S-shaped high-nuclearity Eu₁₉-oxo-cluster embedded polyoxoniobate for information encryption. Chinese Chemical Letters, 2025, 36(2): 110248-. doi: 10.1016/j.cclet.2024.110248
7. [7]
  Hong Wang , Yong Tian , Tiancheng Wu , Shun He , Jiaxi Cui , Jian Chen , Xudong Chen . Photoswitchable dual-color fluorescent polymeric nanoparticles for self-erased time-resolved information encryption and anti-counterfeiting. Chinese Chemical Letters, 2025, 36(7): 110509-. doi: 10.1016/j.cclet.2024.110509
8. [8]
  Jianye Kang , Xinyu Yang , Xuhao Yang , Jiahui Sun , Yuhang Liu , Shutao Wang , Wenlong Song . Carbon dots-enhanced pH-responsive lubricating hydrogel based on reversible dynamic covalent bondings. Chinese Chemical Letters, 2024, 35(5): 109297-. doi: 10.1016/j.cclet.2023.109297
9. [9]
  Yue Pan , Wenping Si , Yahao Li , Haotian Tan , Ji Liang , Feng Hou . Promoting exciton dissociation by metal ion modification in polymeric carbon nitride for photocatalysis. Chinese Chemical Letters, 2024, 35(12): 109877-. doi: 10.1016/j.cclet.2024.109877
10. [10]
  Wenda WANG , Jinku MA , Yuzhu WEI , Shuaishuai MA . Waste biomass-derived carbon modified porous graphite carbon nitride heterojunction for efficient photodegradation of oxytetracycline in seawater. Chinese Journal of Inorganic Chemistry, 2024, 40(4): 809-822. doi: 10.11862/CJIC.20230353
11. [11]
  Qiang Zhang , Weiran Gong , Huinan Che , Bin Liu , Yanhui Ao . S doping induces to promoted spatial separation of charge carriers on carbon nitride for efficiently photocatalytic degradation of atrazine. Chinese Journal of Structural Chemistry, 2023, 42(12): 100205-100205. doi: 10.1016/j.cjsc.2023.100205
12. [12]
  Ziruo Zhou , Wenyu Guo , Tingyu Yang , Dandan Zheng , Yuanxing Fang , Xiahui Lin , Yidong Hou , Guigang Zhang , Sibo Wang . Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(3): 100245-100245. doi: 10.1016/j.cjsc.2024.100245
13. [13]
  Fabrice Nelly Habarugira , Ducheng Yao , Wei Miao , Chengcheng Chu , Zhong Chen , Shun Mao . Synergy of sodium doping and nitrogen defects in carbon nitride for promoted photocatalytic synthesis of hydrogen peroxide. Chinese Chemical Letters, 2024, 35(8): 109886-. doi: 10.1016/j.cclet.2024.109886
14. [14]
  Chao-Long Chen , Rong Chen , La-Sheng Long , Lan-Sun Zheng , Xiang-Jian Kong . Anchoring heterometallic cluster on P-doped carbon nitride for efficient photocatalytic nitrogen fixation in water and air ambient. Chinese Chemical Letters, 2024, 35(4): 108795-. doi: 10.1016/j.cclet.2023.108795
15. [15]
  Wengao Zeng , Yuchen Dong , Xiaoyuan Ye , Ziying Zhang , Tuo Zhang , Xiangjiu Guan , Liejin Guo . Crystalline carbon nitride with in-plane built-in electric field accelerates carrier separation for excellent photocatalytic hydrogen evolution. Chinese Chemical Letters, 2024, 35(4): 109252-. doi: 10.1016/j.cclet.2023.109252
16. [16]
  Cailing Wu , Shaojie Wu , Qifei Huang , Kai Sun , Xianqiang Huang , Jianji Wang , Bing Yu . Potassium-modified carbon nitride photocatalyzed-aminoacylation of N-sulfonyl ketimines. Chinese Chemical Letters, 2025, 36(2): 110250-. doi: 10.1016/j.cclet.2024.110250
17. [17]
  Wen-Jing Li , Jun-Bo Wang , Yu-Heng Liu , Mo Zhang , Zhan-Hui Zhang . Molybdenum-doped carbon nitride as an efficient heterogeneous catalyst for direct amination of nitroarenes with arylboronic acids. Chinese Chemical Letters, 2025, 36(3): 110001-. doi: 10.1016/j.cclet.2024.110001
18. [18]
  Xin Li , Ling Zhang , Yunyan Fan , Shaojing Lin , Yong Lin , Yongsheng Ying , Meijiao Hu , Haiying Gao , Xianri Xu , Zhongbiao Xia , Xinchuan Lin , Junjie Lu , Xiang Han . Carbon interconnected microsized Si film toward high energy room temperature solid-state lithium-ion batteries. Chinese Chemical Letters, 2025, 36(2): 109776-. doi: 10.1016/j.cclet.2024.109776
19. [19]
  Jingyuan Luo , Liping Wu , Jinxi Yan , Xintong Lv , Yuqi Luo , Wei Jiang , Zhiqiang Xiong , Anqi Ni , Chongbo Liu , Renchao Che . Radar-stealth and thermal-insulating MOF-derived cellulose-carbon aerogels for broadband electromagnetic wave absorption. Chinese Chemical Letters, 2025, 36(7): 111065-. doi: 10.1016/j.cclet.2025.111065
20. [20]
  Hui Peng , Xiao Wang , Weiguo Huang , Shuiyue Yu , Linghang Kong , Qilin Wei , Jialong Zhao , Bingsuo Zou . Efficient tunable visible and near-infrared emission in Sb³⁺/Sm³⁺-codoped Cs₂NaLuCl₆ for near-infrared light-emitting diode, triple-mode fluorescence anti-counterfeiting and information encryption. Chinese Chemical Letters, 2024, 35(11): 109462-. doi: 10.1016/j.cclet.2023.109462

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