Feng, Peng-Fei; Kong, Meng-Ya; Yang, Yi-Wei; Su, Ping-Ru; Shan, Chang-Fu; Yang, Xiao-Xi; Cao, Jing; Liu, Wei-Sheng; Feng, Wei; Tang, Yu published the artcile< Eu2+/Eu3+-Based Smart Duplicate Responsive Stimuli and Time-gated Nanohybrid for Optical Recording and Encryption>, Reference of 94-02-0, the main research area is europium smart duplicate responsive stimulus nanohybrid optical recording encryption; duplicato-responsive; in situ coordination; nanohybrid; optical recording and encryption; variable valence europium.
With the rapid development of information science, it is urgent that memory devices possessing high security, d., and desirable storage ability should be developed. A smart duplicate response of stimuli was developed and a time-gate nanohybrid based on variable valence Eu2+/Eu3+ coencapsulated was fabricated and acts as active material in the multilevel and multidimensional memory devices. The luminescence lifetime of Eu3+ in this nanohybrid gave a stimuli response due to which the energy level of the coordinated ligand could be modulated. By a simple sintering procedure, Eu3+ was partially in situ reduced to Eu2+ with a short lifetime in the system. And the in situ reduction ensured both Eu3+ and Eu2+ ions’ uniform distribution in the nanohybrid and simultaneous response upon light excitation of variable valence Eu ions. Eu3+ revealed a prolonged lifetime because of the presence of an energy-transfer effect of Eu2+ → Eu3+. Such a nanohybrid had abundant luminescent properties, including the short lifetime of Eu2+, the energy transfer from the Eu2+ to Eu3+ ions, and the stimuli response of the Eu3+ lifetimes when exposed to acidic or basic vapor, thus giving birth to interesting recording and encryption performance in spatial-temporal dimensions. Probably this research will point out a new direction for the future development of multilevel and multidimensional optical recording and encryption materials.
ACS Applied Materials & Interfaces published new progress about Coded information. 94-02-0 belongs to class esters-buliding-blocks, and the molecular formula is C11H12O3, Reference of 94-02-0.
Referemce:
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Ester – an overview | ScienceDirect Topics