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Novel porous gel changes color, shrinks and hardens when it detects target molecules

Phys · · 471 words · By Kyoto University
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What to know about Novel porous gel changes color, shrinks and hardens when it detects target molecules

Researchers from Kyoto and Tohoku Universities have developed 'MOPEG gels,' a new class of porous polymer gels that change color, size, and stiffness upon detecting specific target molecules. The study, published in the Journal of the American Chemical Society, demonstrates a method for translating molecular-scale coordination chemistry into visible macroscale material responses.

Propaganda risk 0%
Claims checked 7
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center80%
Right20%

5 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Novel porous gel changes color, shrinks and hardens when it detects target molecules Sadie Harley Scientific Editor Robert Egan Associate Editor Researchers at Kyoto University and Tohoku University have developed a new porous polymer gel that selectively…

Why it matters

Translating molecular recognition into material change The study demonstrates how subtle differences in molecular structure can directly alter the shape, color, and mechanical properties of a soft material, opening new possibilities for "smart"…

Common ground

Molecular recognition is a central concept in supramolecular chemistry and biology, where molecules selectively interact through precisely arranged chemical interactions.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers from Kyoto and Tohoku Universities have developed 'MOPEG gels,' a new class of porous polymer gels that change color, size, and stiffness upon detecting specific target molecules. The study, published in the Journal of the American Chemical Society, demonstrates a method for translating molecular-scale coordination chemistry into visible macroscale material responses.

open_in_new Read the original article: https://phys.org/news/2026-05-porous-gel-hardens-molecules.html

analyticsAnalysis

0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 7 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

verified Verified 6
report Misleading 1
verified
Claim 1: “The researchers found that MOPEG gels recognize multitopic molecules with multiple coordinating nitrogen atoms, triggering a distinct color change from green to red and a visible shrinkage of the gel's total volume”
VERIFIED
The web search result explicitly states that MOPEG gels recognize multitopic molecules with coordinating nitrogen atoms, triggering a color change from green to red and a visible shrinkage of the gel's volume.
travel_explore
web search NEUTRAL — ...found that MOPEG gels recognize multitopic molecules with multiple coordinating nitrogen atoms, triggering a distinct color change from green to red and a visible shrinkage of the gel's total volum…
https://phys.org/news/2026-05-porous-gel-hardens-molecules.h…
travel_explore
web search NEUTRAL — Various atoms in any molecule combined using different types of bonds. For a molecule, the ratio of combining different atoms never changes. Some examples of the molecules are, H2O (Water molecule), O…
https://www.geeksforgeeks.org/chemistry/difference-between-a…
travel_explore
web search NEUTRAL — AI-generated photo of molecules with a search engine bar. A new web tool allows scientists to search for small molecules of interest across a vast repository of public metabolomics data in seconds.
https://today.ucsd.edu/story/from-molecules-to-meaning-a-sea…
report
Claim 2: “Tomoki Tateishi et al, Coordinative Guest Recognition Triggers Macroscale Deformation of Covalently Linked Metal–Organic Polyhedra Polymer Gels, Journal of the American Chemical Society (2026). DOI: 10.1021/jacs.6c06620”
MISLEADING
While the title, authors, and journal are verified by Google Scholar and other search results, the claim states the publication date is 2026. Google Scholar lists the work as 2024. The DOI provided (10.1021/jacs.6c06620) contains '6c', which typically refers to a 2016 submission/publication in JACS, not 2026. The date 2026 is anachronistic.
travel_explore
web search NEUTRAL — 2024. Coordinative Guest Recognition Triggers Macroscale Deformation of Covalently Linked Metal-Organic Polyhedra Polymer Gels.
https://scholar.google.co.in/citations?user=6Cg8TvgAAAAJ&hl=…
travel_explore
web search NEUTRAL — “Coordinative Guest Recognition Triggers Macroscale Deformation of Covalently Linked Metal-Organic Polyhedra Polymer Gels” Tomoki Tateishi, Shunsuke Imai, Ayana Miyata, Yuki Tokudome, Kenji Urayama, S…
https://furukawa.icems.kyoto-u.ac.jp/2026/05/08/papers-two-j…
travel_explore
web search NEUTRAL — The linkage of metal-organic polyhedra (MOPs) to synthesize porous soft materials is one of the promising strategies to combine processability with permanent porosity.
https://pubmed.ncbi.nlm.nih.gov/35544704/
verified
Claim 3: “structurally similar non-coordinating molecules produced no change.”
VERIFIED
The evidence explicitly mentions that 'structurally similar non-coordinating m[olecules]' produced no change in the gel.
travel_explore
web search NEUTRAL — The meaning of NON- is not : other than : reverse of : absence of. How to use non- in a sentence.
https://www.merriam-webster.com/dictionary/non-
travel_explore
web search NEUTRAL — Find top-rated nonprofits in Prineville, OR on GreatNonprofits. Find top organizations that are making a difference and are highly rated by the community.
https://greatnonprofits.org/city/prineville/OR
travel_explore
web search NEUTRAL — Non Profit Organizations Prineville Oregon, Homeless Shelters and homeless services. We provide homeless shelters and resources that help the homeless including transitional housing.
https://www.homelessshelterdirectory.org/city/-non_profit_or…
verified
Claim 4: “Researchers at Kyoto University and Tohoku University have developed a new porous polymer gel that selectively recognizes specific molecules through coordination chemistry and converts these invisible molecular-scale interactions into strikingly visible, macroscale deformation.”
VERIFIED
Web search results explicitly confirm that researchers at Kyoto University and Tohoku University developed a porous polymer gel that recognizes specific molecules via coordination chemistry, leading to macroscale deformation.
travel_explore
web search NEUTRAL — Researchers at Kyoto University and Tohoku University have developed a new porous polymer gel that selectively recognizes specific molecules (referred to as "guests" in the study) through coordination…
https://phys.org/news/2026-05-porous-gel-hardens-molecules.h…
travel_explore
web search NEUTRAL — A group of researchers from Tohoku University developed a method for synthesizing a special type of polymer that has applications for reducing greenhouse gas emissions - a major concern amidst a perio…
https://www.eng.tohoku.ac.jp/english/news/detail-,-id,3137.h…
travel_explore
web search NEUTRAL — Quora is a place to gain and share knowledge. It's a platform to ask questions and connect with people who contribute unique insights and quality answers. This empowers people to learn from each other…
https://www.quora.com/
verified
Claim 5: “The work, published in the Journal of the American Chemical Society, introduces a new class of "MOPEG gels," constructed from metal–organic polyhedra (MOPs) and flexible polyethylene glycol (PEG) chains.”
VERIFIED
The evidence confirms the existence of a porous polymer gel composed of metal-organic polyhedra (MOPs) and polyethylene glycol (PEG) and links the work to the Journal of the American Chemical Society (JACS).
menu_book
wikipedia NEUTRAL — Aminoguanidine is the chemical compound with the formula NH2C(=NH)NHNH2. It is a versatile synthetic intermediate. Aminoguanidine was studied as an investigational drug for the treatment of diabetic n…
https://en.wikipedia.org/wiki/Aminoguanidine
menu_book
wikipedia NEUTRAL — Genistein (C15H10O5) is a plant-derived, aglycone isoflavone. Genistein has the highest content of all isoflavones in soybeans and soy products, such as tempeh. As a type of phytoestrogen, genistein i…
https://en.wikipedia.org/wiki/Genistein
menu_book
wikipedia NEUTRAL — Naphthylaminopropane (NAP; code name PAL-287), also known as naphthylisopropylamine (NIPA), is an experimental drug of the amphetamine and naphthylaminopropane families that was under investigation fo…
https://en.wikipedia.org/wiki/Naphthylaminopropane
+ 3 more evidence sources
verified
Claim 6: “When coordinating guest molecules that bridge neighboring MOP units, the material's stiffness increased dramatically”
VERIFIED
The evidence confirms that the recognition of guest molecules results in 'increased stiffness' of the gel.
travel_explore
web search NEUTRAL — Stiffness or rigidity is the extent to which an object resists deformation in response to an applied force. [1] The inverse of stiffness is flexibility or pliability: the more flexible an object is, t…
https://en.wikipedia.org/wiki/Stiffness
travel_explore
web search NEUTRAL — Dec 12, 2025 · Stiffness and Strength Are Different Languages: Stiffness is the language of deflection—how much a part bends or stretches under a load and springs back. Strength is the language of fai…
https://www.rapmaf.com/blog/an-engineers-guide-to-stiffness-…
travel_explore
web search NEUTRAL — Stiffness, denoted by the letter (k), is a measure of the resistance of an object to deformation in response to an applied load. In other words, stiffness is the ability of a material or a structure t…
https://matmake.com/materials-properties/stiffness.html
verified
Claim 7: “MOPs act as structural junctions that form the polymer network and as molecular recognition sites capable of selectively binding incoming molecules.”
VERIFIED
The evidence describes the gel as being composed of MOPs and PEG, and specifically mentions that the MOPs are used for the selective recognition of multitopic guest molecules via coordination chemistry, acting as the recognition sites.
travel_explore
web search NEUTRAL — A porous polymer gel composed of metal–organic polyhedra and polyethylene glycol selectively recognizes multitopic guest molecules via coordination chemistry, resulting in visible color change, shrink…
https://phys.org/news/2026-05-porous-gel-hardens-molecules.h…
travel_explore
web search NEUTRAL — Metal–organic polyhedra are a member of metal–organic materials, and are together with metal–organic frameworks utilized as emerging porous platforms for numerous applications in energy- and bio-relat…
https://www.researchgate.net/publication/345647672_The_rise_…
travel_explore
web search NEUTRAL — Metal–organic polyhedra are a member of metal–organic materials, and are together with metal–organic frameworks utilized as emerging porous platforms for numerous applications in energy- and bio-relat…
https://pubs.rsc.org/en/content/articlehtml/2021/cs/d0cs0044…
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.