Imidazolium‐Functionalized Diacetylene Amphiphiles: Strike a Lighter and Wear Polaroid Glasses to Decipher the Secret Code

Abstract

Figure 5. Secret barcodes deciphered by tuning temperature and transmission axis of the linear polarizer.

Fabrication of chiral polydiacetylene nanotubes via supramolecular gelation of a triterpenoid-derived amphiphile

“…This phenomenon was due to the low conjugation length of PDA, which originated from the increased motional freedom of the PDA side chains when suffering from temperature, organic solvent, or mechanical force. 40,41 In brief, this color transition of C4-MOP/PDA observed by naked eyes could be utilized to prepare multifunctional sensors for external stimuli. (B) Fluorescence spectra of C4-MOP/PDA film after heating.…”

Highly Plasticized Lanthanide Luminescence for Information Storage and Encryption Applications

“…With the explosive growth of big data and the increasing importance of information security, the demand for developing new types of storage media for information storage and encryption has increased dramatically. [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 ] Lanthanide‐based materials with distinct optical performances, [ 9 , 10 , 11 , 12 , 13 , 14 , 15 ] such as multiple excited wavelengths, [ 16 ] tunable color emission, [ 17 ] different luminescence lifetime, [ 18 ] and good luminescent stability, [ 19 , 20 ] have displayed a great value in information storage and anticounterfeiting applications. [ 21 ] Common strategies developed to store information strongly rely on the preparation of luminescent inks based on lanthanide‐doped nanomaterials.…”

Rational Design of Diphenyldiacetylene‐Based Fluorescent Materials Enabling a 365‐nm Light‐Initiated Topochemical Polymerization

“…Polydiacetylenes (PDAs) are usually fabricated through topochemical reaction initiated remotely without any additives. The well‐defined alternating ene‐yne conjugated skeleton allows the resulting materials to exhibit fascinating optical [1] and electrical [2] properties like chromatism and semi‐conductivity, providing versatile prototypes for applications in cell imaging, [3] photo‐patterning, [4] anti‐counterfeiting, [5] information encryption, [6] photocatalysis, [7] optoelectronic devices, [8] etc. Besides, comprehensive works have also been reported by Prof. Juyoung Yoon, [9] Prof. Jong‐Man Kim [10] and others, [11] where various aliphatic PDAs are widely functionalized to be used as chemo/bio sensors since conventional PDAs usually go through a significant blue‐to‐red colorimetric transition as well as a non‐fluorescent to fluorescent transition upon external stimuli.…”