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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
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In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
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Area of Science:

  • Materials Science
  • Supramolecular Chemistry
  • Information Security

Background:

  • Increasing demand for robust information encryption necessitates advanced materials.
  • Current encryption methods require novel approaches for enhanced security.
  • Smart materials offer dynamic and tuneable properties for advanced applications.

Purpose of the Study:

  • To develop smart materials with orthogonal and temporal encryption properties.
  • To achieve multicolour fluorescence through controlled supramolecular assembly.
  • To demonstrate advanced information encryption capabilities, including 3D and 4D codes.

Main Methods:

  • Utilizing a dynamic assembly-induced multicolour supramolecular system.
  • Tailoring solvent composition to control pyrene derivative assembly and fluorescence.
  • Implementing fluorescence-controllable supramolecular systems in the solid phase.

Main Results:

  • Successfully developed smart materials exhibiting multicolour fluorescence (blue, orange, white).
  • Demonstrated orthogonal encryption functions, enabling the creation of 3D codes.
  • Achieved time-dependent encryption with temporal multi-information displays and 4D codes.

Conclusions:

  • The developed supramolecular system provides a novel platform for advanced information encryption.
  • The smart materials exhibit tuneable fluorescence for dynamic and secure data encoding.
  • This research inspires the design of next-generation encryption materials with superior security.