TY - JOUR
T1 - Efficient tuning of nitrogen-doped carbon dots phosphorescence based on substrate regulation for multicolor and time-dependent anti-counterfeiting
AU - Meng, Qingxuan
AU - Gan, Sanpeng
AU - Cheng, Qian
AU - Jiang, Zhao
AU - Zhu, Haifeng
AU - Xie, Gongxing
AU - Liu, Rui
AU - Zhu, Senqiang
AU - Zhu, Hongjun
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2024/5
Y1 - 2024/5
N2 - The development of an accurate phosphorescent regulation strategy is key to customizing carbon dots (CDs) for anti-counterfeiting applications. To this target, we design a simple substrate regulation technique to manipulate phosphorescence of nitrogen-doped CDs (NCD). In this work, a cost-effective and environmentally friendly approach is proposed for combining NCD with urea (UA), boric acid (BA) and silica (SiO2) through hydrogen bonding or covalent bonding, a series of RTP composites were designed and synthesized. The RTP wavelength and lifetime of the composites can be tuned effectively, by preparing composite materials (NCD/UA, NCD/BA and NCD/SiO2) composed of NCD and different substrate (UA; BA; SiO2). The average RTP lifetime of NCD/UA, NCD/BA and NCD/SiO2 are 332.26 ms, 652.05 ms and 1587.22 ms, respectively. Furthermore, the RTP mechanism is verified. This facilitates the application of RTP materials and the adjustment of properties to practical requirements. Owing to the different phosphorescent wavelength and lifetime of NCD/UA, NCD/BA and NCD/SiO2, time-dependent multiple anti-counterfeiting can be achieved. Cell experiments show that NCD, NCD/BA, NCD/UA and NCD/SiO2 have low cytotoxicity and good biocompatibility. This result indicates these RTP materials can be potentially used to realize multicolor and time-dependent anti-counterfeiting.
AB - The development of an accurate phosphorescent regulation strategy is key to customizing carbon dots (CDs) for anti-counterfeiting applications. To this target, we design a simple substrate regulation technique to manipulate phosphorescence of nitrogen-doped CDs (NCD). In this work, a cost-effective and environmentally friendly approach is proposed for combining NCD with urea (UA), boric acid (BA) and silica (SiO2) through hydrogen bonding or covalent bonding, a series of RTP composites were designed and synthesized. The RTP wavelength and lifetime of the composites can be tuned effectively, by preparing composite materials (NCD/UA, NCD/BA and NCD/SiO2) composed of NCD and different substrate (UA; BA; SiO2). The average RTP lifetime of NCD/UA, NCD/BA and NCD/SiO2 are 332.26 ms, 652.05 ms and 1587.22 ms, respectively. Furthermore, the RTP mechanism is verified. This facilitates the application of RTP materials and the adjustment of properties to practical requirements. Owing to the different phosphorescent wavelength and lifetime of NCD/UA, NCD/BA and NCD/SiO2, time-dependent multiple anti-counterfeiting can be achieved. Cell experiments show that NCD, NCD/BA, NCD/UA and NCD/SiO2 have low cytotoxicity and good biocompatibility. This result indicates these RTP materials can be potentially used to realize multicolor and time-dependent anti-counterfeiting.
KW - Anti-counterfeiting
KW - Long lifetime
KW - N-doped carbon dots
KW - Room-temperature phosphorescence
KW - Substrate regulation
UR - http://www.scopus.com/inward/record.url?scp=85184801121&partnerID=8YFLogxK
U2 - 10.1016/j.dyepig.2024.112002
DO - 10.1016/j.dyepig.2024.112002
M3 - 文章
AN - SCOPUS:85184801121
SN - 0143-7208
VL - 224
JO - Dyes and Pigments
JF - Dyes and Pigments
M1 - 112002
ER -