The red panda (Ailurus fulgens), also known as the lesser panda and often referred to as firefox, is a small mammal native to the eastern Himalayas and southwestern China. It has dense reddish-brown fur with a black belly and legs, white-lined …

2023年8月8日 · Early reports attribute the thermochromism in PDAs to chromatic phase transitions that involve an initial planar, non-fluorescent, blue PDA phase (maximum absorption peak wavelength, λ max ∼630 nm) that interconverts with a fluorescent, red PDA phase (λ max ∼540 nm) that has a more twisted ene-yne conjugated backbone.

2019年9月1日 · Polydiacetylene (PDA) is a widely investigated polymer that shows unique blue and red phases. The precise control of the blue and red phase topochemical polymerization is an interesting topic. Here, we demonstrated that the supramolecular chirality of the gel matrix can selectively drive the monomeric diacetylene into blue and red phase.

2025年1月7日 · Polydiacetylenes (PDAs) are conjugated polymers that are well known for their colorimetric transition from blue to red with the application of energetic stimulus. Sensing platforms based on polymerized diacetylene surfactant vesicles and other structures have been widely demonstrated for various colorimetric biosensing applications.

2021年10月26日 · Polydiacetylene (PDA) is an attractive material due to its unique chromatic transition properties by external stimuli. Its blue-to-red color transitions observed by the naked eye make the PDA a promising optical biosensor.

2018年2月1日 · A reversible red-yellow color change in PDA (polydiacetylene) was achieved by controlling the head group of the diacetylene molecules. Typical PDAs show blue-red color transitions, and this reversible red-yellow color transition could be applied to …

2024年10月10日 · PDA-based thermochromic sensors could play a pivotal role in this process by providing immediate visual alerts when temperature or time thresholds are exceeded. This feature helps prevent mishandling and ensures that samples remain intact prior to freezing and storage.

2008年10月10日 · Conjugated polydiacetylene (PDA) possessing stimuli-responsive properties has been intensively investigated for developing efficient sensors. We report here fluorescence resonance energy transfer (FRET) in liposomes synthesized using different molar ratios of dansyl-tagged diacetylene and diacetylene–carboxylic acid monomers.

Polydiacetylene (PDA) inserted in films or in vesicles has received increasing attention due to its property to undergo a blue-to-red colorimetric transition along with a change from non-fluorescent to fluorescent upon application of various ...

2025年3月22日 · The two species are the Chinese red panda and the Himalayan red panda. The Chinese red panda is the larger species and it has darker fur, while the Himalayan red panda often has more white on its face. 5. Adult Red Pandas Only Socialize During Mating Seasons. Red pandas are not very sociable but do socialize during the mating season in early ...