Recent progress in polydiacetylene mechanochromism

Das, Bratati; Jo, Seiko; Zheng, Jianlu; Chen, Jiali; Sugihara, Kaori

doi:10.1039/d1nr07129g

Cited by 33 publications

(28 citation statements)

References 82 publications

(93 reference statements)

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“…[17][18][19][20][21][22] In particular, the strong chromophoric absorbance of the resulting polydiacetylenes has intrigued many scientists, owing to the reversibility of different phases responsible for blue, purple, and red colours, leading to mechanochromic sensing applications. [23][24][25][26][27][28] Rubner and Sijbesma et al exploited PDAs anchored by bisurea and bisurethanes in hard-soft elastomers to design highly tensile mechanochromic materials. 29,30 Sijbesma et al further demonstrated PDA-based amphiphiles and cross-polymerized hydrogels to furnish interesting biomimetic strain-stiffening materials.…”

Section: Introductionmentioning

confidence: 99%

Topochemical polymerization in phenylalanine anchored chiral diacetylenes for chiroptical properties and tunable thermo-, halo-, solvatochromism

et al. 2023

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Section: Introductionmentioning

confidence: 99%

Topochemical polymerization in phenylalanine anchored chiral diacetylenes for chiroptical properties and tunable thermo-, halo-, solvatochromism

et al. 2023

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“…Stimuli-responsive color-change properties of PDA have been applied to the development of sensing materials. − In general, the self-organized structures of DA monomers, such as vesicles and layered structures, provide PDA through the topochemical polymerization with the irradiation of UV light when the distance between the DA moieties is shorter than 0.5 nm in the condensed states . Molecular design, such as changes in the functional groups, chain lengths, and molecular shapes, has been studied in previous works. − However, the structural flexibility sufficient to enhance the dynamic properties with molecular motion is not easily achieved by the topochemically polymerizable self-organized structures containing the densely packed molecules.…”

Section: Introductionmentioning

confidence: 99%

Coatable 2D Conjugated Polymers Containing Bulky Macromolecular Guests for Thermal Imaging

Edagawa

Matsuda

Kawakubo

et al. 2022

ACS Appl. Mater. Interfaces

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Dynamic properties are derived from the structural flexibility of 2D polymers. Softening layered structures has the potential for tuning and enhancing the dynamic properties. In the present work, the flexibility of layered polydiacetylene (PDA) is tuned by the interlayer polymeric guests with different branching structures. PDA shows thermoresponsive color-change properties through shortening the effective conjugation length with molecular motion. Whereas the blue-to-red color transition is observed at certain threshold temperatures for the layered PDA without the interlayer guest, the intercalation of the bulky polymer guests lowers the starting temperature and widens the temperature range for the thermoresponsive color changes. The resultant layered composite of PDA and bulky polymer affords the homogeneous coating on substrates on the centimeter scale. The thermoresponsive color-change coating is applied to temperature-distribution imaging. The specific heat of liquids is colorimetrically estimated using the coating on the bottle. The coating on a silk cloth visualizes the temperature distribution on a simulated tissue during surgical operation using an ultrasonic coagulation cutting device. The coating can be applied to thermal imaging in a variety of fields. Moreover, the softening strategy contributes to explore dynamic properties of soft 2D materials.

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“…PDA is a stimuli‐responsive color‐change polymer applicable to sensing. [ 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 ] The original blue color is changed to red with the application of external stimuli through shortening of the effective conjugation length. The stimuli responsivity of PDA is controlled by molecular design and intercalation approaches.…”

Section: Introductionmentioning

confidence: 99%

“…[ 61 ] Whereas color changes in response to thermal and chemical stresses were extensively studied, responsiveness to mechanical stress was limited in previous works. [ 49 , 50 , 55 , 60 , 62 , 63 , 64 ] In a recent report, the strain applied to the PDA‐contained hydrogel was detected by changes in not the color but the capacitance. [ 65 ] Ultrasonic stress was detected as the shear stress using self‐assembled PDA vesicles.…”

Section: Introductionmentioning

confidence: 99%

Stimuli‐Responsive Sponge for Imaging and Measuring Weak Compression Stresses

et al. 2022

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Imaging and measuring compression stresses secure a safe and healthy life. Compression stresses in kPa range are not easily detected by conventional mechanoresponsive materials because microscopic molecular motion of the chromophores is not induced by such weak stresses. Moreover, imaging of the stress distribution is not achieved so far. The present study shows a sponge device combining two stimuli‐responsive materials, a capsule releasing interior liquid and color‐changing polymer in responses to compression stress and chemical stimulus, respectively. The stimuli‐responsive capsule is dispersed on a melamine sponge comprised of the fibers with coating the layered polydiacetylene (PDA). The application of weak compression stresses induces collapse of the capsules, outflow of the interior liquid, and subsequent irreversible color change of PDA. The cascading response in the sponge device colorimetrically enables imaging of the distribution and measuring the strength of the compression stresses in kPa range. Furthermore, the device demonstrates imaging and measuring unknown weak compression stresses applied by the irregular‐shaped objects. A couple of clinical issues in surgical operation of intestine are studied using the stress‐imaging sponge device. The device and its design strategy can be applied to stress imaging in a variety of fields.

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Recent progress in polydiacetylene mechanochromism

Abstract: This mini review summarizes recent progress in polydiacetylene (PDA) mechanochromism, with a special focus on the quantitative and nanoscopic data that have emerged in recent years.

Cited by 33 publications

References 82 publications

Topochemical polymerization in phenylalanine anchored chiral diacetylenes for chiroptical properties and tunable thermo-, halo-, solvatochromism

Topochemical polymerization in phenylalanine anchored chiral diacetylenes for chiroptical properties and tunable thermo-, halo-, solvatochromism

Coatable 2D Conjugated Polymers Containing Bulky Macromolecular Guests for Thermal Imaging

Stimuli‐Responsive Sponge for Imaging and Measuring Weak Compression Stresses

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