Changes in crystal morphology induced by lanthanide doping into diacetylene lamellar crystals DOI Creative Commons
Michinari Kohri,

Sojiro Isomura,

Kyoka Tachibana

et al.

Polymer Journal, Journal Year: 2024, Volume and Issue: unknown

Published: May 15, 2024

Abstract In this study, we show that doping lanthanides into lamellar crystals reorganizes the structure and dramatically changes crystal morphology. Azo-DA , a compound with azobenzene derivatives carboxylic acids at both ends of diacetylene moiety, formed plate-like crystals. The holmium (Ho), lanthanide, film obtained by stacking crystals, promoted dramatic change in morphology, resulting formation an Azo-DA/Ho radial structure. A detailed investigation growth process revealed which is slightly solution phase during Ho doping, acts as pseudonucleating agent morphology Additionally, morphological films significantly changed surface properties films, such their appearance water repellency. Similar were induced when other lanthanide elements used instead Ho, type dopant can affect magnetic films.

Language: Английский

Mechanoresponsive diacetylenes and polydiacetylenes: novel polymerization and chromatic functions DOI Creative Commons
Yuna Kim, Ken‐ichi Iimura, Nobuyuki Tamaoki

et al.

Bulletin of the Chemical Society of Japan, Journal Year: 2024, Volume and Issue: 97(4)

Published: March 13, 2024

Abstract This review focuses on recent advancements regarding mechanoresponsive functions of diacetylene (DA) and polydiacetylene (PDA). Their ability to undergo pronounced topochemical polymerization chromatic behavior variations in response external stimuli has marked them as a promising platform for chemo- bio-sensing over the past few decades. Notably, major advances, showcasing selective highly sensitive mechanoresponses along with their quantitative analysis, have been achieved years. The categorization includes DAs undergoing pressure-controlled crystalline transitions polymerization, well PDAs exhibiting mechanochromic or mechanofluorochromic transitions. Accordingly, this covers molecular designs allowing mechanical activation nanostructured hybridized amplifying stimulus-optical feedback, nanoscopic analytical tools mechanochromism, potential applications mechanochemical sensing imaging.

Language: Английский

Citations

9
Tailoring the properties of castor oil polyurethanes organogels with green oligoesters DOI Creative Commons
Damiano Bandelli, Rosangela Mastrangelo, Giovanna Poggi

et al.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Journal Year: 2024, Volume and Issue: 698, P. 134528 - 134528

Published: June 12, 2024

Castor oil (CO) can react with isocyanate to form polyurethane organogels, whose hydrophobicity be regulated by functionalization "green" oligoesters of bio-dicarboxylic acids. Here, we elucidated the gelation mechanism induced gain control gels' mechanical properties and solvent confinement capacity. This useful in cleaning Cultural Heritage items, a socioeconomically important application, other scientific/technological sectors. During gelation, aggregates compatibility CO is oligoesters' hydrophobicity. allows fine time micro- nanostructure structure, where presence solid-like regions regulates rheological behaviour resistance. The upload capacity also depends on hydrophobicity, which favour chain relaxation over Fickian diffusion during swelling. Finally, swollen organogels were used remove organic varnishes/coatings from painted wood glass, demonstrating potential as sustainable tools for works art.

Language: Английский

Citations

3
Imaging of Accumulated Mechanical Stresses Using Self-Assembled Layered Conjugated Polymer DOI
Yuki Mochizuki, Hiroaki Imai, Yuya Oaki

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(41), P. 48725 - 48735

Published: Oct. 5, 2023

When mechanical stresses, such as tensile, compressive, and frictional are applied to objects by various motions, they accumulated in materials. Conventional mechanoresponsive materials sensors detect one-time stress. However, the stresses not visualized or measured previous works. The present study demonstrated imaging sensing of only but also stresses. Polyurethane (PU) film was combined with 2D layered polydiacetylene (PDA), a stimuli-responsive color-changing polymer. PDA generally exhibits no color changes application tensile compression because molecular motion leading change is induced Here versatile mechanoresponsiveness achieved using block copolymer guest partially intercalated PDA. As interlayer outerlayer segments interact PU, respectively, transferred from PU via guest. imaged quantified work depending on number strength multiple design strategy methodology can be development new for wide range length scales.

Language: Английский

Citations

9
Stimuli‐Responsive Sponge for Imaging and Measuring Weak Compression Stresses DOI Creative Commons

Nahoko Ono,

Ryo Seishima, Koji Okabayashi

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 10(3)

Published: Dec. 11, 2022

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

Language: Английский

Citations

10
Dry liquid metals stabilized by silica particles: Synthesis and application in photothermoelectric power generation DOI

Nichayanan Manyuan,

Tomoko Otsuki,

Yusuke Tsumura

et al.

Journal of Colloid and Interface Science, Journal Year: 2023, Volume and Issue: 649, P. 581 - 590

Published: June 21, 2023

Language: Английский

Citations

6
High‐Sensitive Spatiotemporal Distribution Imaging of Compression Stresses Based on Time‐Evolutional Responsiveness DOI Creative Commons

Nahoko Ono,

Ryo Seishima, Kohei Shigeta

et al.

Small, Journal Year: 2024, Volume and Issue: 20(24)

Published: March 15, 2024

Abstract Mechanoresponsive materials have been studied to visualize and measure stresses in various fields. However, the high‐sensitive spatiotemporal imaging remain a challenging issue. In particular, time evolutional responsiveness is not easily integrated mechanoresponsive materials. present study, of weak compression achieved by time‐evolutional controlled diffusion processes using conjugated polymer, capsule, sponge. Stimuli‐responsive polydiacetylene (PDA) coated inside A capsule set on top face When range 6.67–533 kPa are applied device, blue color PDA changed red interior liquid containing guest polymer flowed out disrupted capsule. The strength ( F /N), t /s), impulse · /N s) visualized quantified red‐color intensity. metal ion intercalated layered structure tune responsivity, device visualizes elapsed τ /min) after unloading stresses. PDA, sponge play important roles achieve for distribution through processes.

Language: Английский

Citations

1
Silver to Gold Metallic Luster Changes in Stimuli-Responsive Diacetylene Derivatives Uniquely Arranged within Crystals DOI

Kyoka Tachibana,

Yuki Kojima, Hyuma Masu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 14, 2024

Eye-catching metallic luster materials, especially those whose colors can be controlled by external stimuli, have many potential applications. Here, we present a silver material that changes color to gold upon UV irradiation. Diacetylene (DA) derivatives with stilbenes introduced via linkers at both ends (

Language: Английский

Citations

1
A Novel Method for UV Measurement Using PLA-based Photochromic Material and Machine Learning Models DOI
Esra Kayacan Erdoğan, Şekip Esat Hayber, Ömer Galip Saraçoğlu

et al.

IEEE Sensors Journal, Journal Year: 2024, Volume and Issue: 25(2), P. 3761 - 3771

Published: Nov. 25, 2024

Language: Английский

Citations

1
Mechanochromic Chameleon Packaging Based on Polydiacetylene DOI
Bratati Das,

Yu Uchikura,

Naoji Matsuhisa

et al.

ACS Sensors, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

We demonstrated a mechanochromic chameleon packaging that quantitatively visualizes damage based on the polydiacetylene blue-to-red color transition. The applied pressures can be conveniently read by taking photograph via homemade mobile app called "Pressure Analysis App". key aspects of development were 1) adjustment sensitivity adding guest molecules into PDA matrix, 2) quantitative calibration, and 3) accurate reading pressure from RGB images calibration. force cellulose was characterized in range 30-100 nN (2.59-8.86 MPa) at nanoscale dual friction force/fluorescence microscopy, 0.7-2.2 N (0.11-0.35 macroscopic scale tester. scanning speed found to one parameters, where above 50 mm/s 6.45 times larger than below 10 mm/s. developed system used for transporting electronics medical tools, such as vaccine vials, food, etc., more safely reliably future.

Language: Английский

Citations

1
Changes in crystal morphology induced by lanthanide doping into diacetylene lamellar crystals DOI Creative Commons
Michinari Kohri,

Sojiro Isomura,

Kyoka Tachibana

et al.

Polymer Journal, Journal Year: 2024, Volume and Issue: unknown

Published: May 15, 2024

Abstract In this study, we show that doping lanthanides into lamellar crystals reorganizes the structure and dramatically changes crystal morphology. Azo-DA , a compound with azobenzene derivatives carboxylic acids at both ends of diacetylene moiety, formed plate-like crystals. The holmium (Ho), lanthanide, film obtained by stacking crystals, promoted dramatic change in morphology, resulting formation an Azo-DA/Ho radial structure. A detailed investigation growth process revealed which is slightly solution phase during Ho doping, acts as pseudonucleating agent morphology Additionally, morphological films significantly changed surface properties films, such their appearance water repellency. Similar were induced when other lanthanide elements used instead Ho, type dopant can affect magnetic films.

Language: Английский

Citations

0