Room temperature tunable multicolor phosphorescent polymers for humidity detection and information encryption

Abstract

A polymer with tunable multicolor was prepared via copolymerizing a phosphor with concentration dependent luminescence and acrylamide based on chemical crosslinking and hydrogen bonding interactions for humidity detection and information encryption.

A facile strategy to achieve room‐temperature organic long afterglow from melt processible, new two‐dimensional polyamide doped γ‐polyamide 6

“…[1][2][3] They can take advantages of large Stokes shift and luminescence life from the afterglow component, as well as good processability and mechanical flexibility from the matrix. In last decades it has been reported that the doped polymer can be applied for data encryption, 4 anti-counterfeiting design, 5 biological imaging, 6 organic light-emitting diodes 7 and 3D printing 8 and so forth. Until now, researchers have developed some afterglow doped polymers mainly based on polymethyl methacrylate (PMMA) 9,10 or polyvinyl alcohol (PVA) matrix.…”

Emission-Tunable Room-Temperature Phosphorescent Two-Dimensional Polymer Network via a Photo-Cross-Linking Reaction

“…Materials obtained by dynamic covalent chemistry, such as polymers and covalent− organic frameworks, are used in gas storage, 45 catalysis, 46 and biomedical sensing. 47,48 Since the photochemical [2 + 2] cycloaddition (PCA) reaction of pure organic compounds was pioneered in the 1960s, 49−51 research reports on photochemical reactions have grown explosively in the past decade. 52 The advantage of this method in the formation of a C−C bond is that the synthesis is relatively simple: the sample can be irradiated with light of a specified wavelength.…”

“…The second type depends on the formation of new covalent bonds, such as Diels–Alder and aldol reactions. Materials obtained by dynamic covalent chemistry, such as polymers and covalent–organic frameworks, are used in gas storage, catalysis, and biomedical sensing. , …”

Thermally Activated Delayed Fluorescence and Room‐Temperature Phosphorescence in Sulfidoazatriangulene‐Based Materials and their S‐oxides

“…This requires minimization of the electron exchange interaction, which is typically achieved by spatial separation of a material's frontier molecular orbitals (HOMO and LUMO). The ability to productively harvest triplet excitons in allorganic systems has unlocked many new applications for TADF and RTP materials, including photocatalysts, [10][11][12][13] luminescent sensors, [14][15][16][17][18] tools for information encryption, [19][20][21][22][23] bioimaging probes, [24][25][26][27] and emitters for electroluminescent devices.Despite their advantages, many donoracceptor (D-A) TADF compounds exhibit poor photostability and low color purity, hindering their practical use. Triarylamines in particular are often the cause of poor stability in these systems, despite being the most common π-electron donors used in TADF materials today.…”

“…This requires minimization of the electron exchange interaction, which is typically achieved by spatial separation of a material's frontier molecular orbitals (HOMO and LUMO). The ability to productively harvest triplet excitons in allorganic systems has unlocked many new applications for TADF and RTP materials, including photocatalysts, [10][11][12][13] luminescent sensors, [14][15][16][17][18] tools for information encryption, [19][20][21][22][23] bioimaging probes, [24][25][26][27] and emitters for electroluminescent devices.…”