Dynamic nanogates let longer molecules pass faster through flexible pores

Phys · Jun 03, 2026 · 457 words · By University

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What to know about Dynamic nanogates let longer molecules pass faster through flexible pores

Researchers from the University of Tokyo and Yokohama City University studied how linear alkane molecules pass through dynamic nanoscale pores created by self-assembled nanocubes. They discovered that longer molecules can pass through these flexible gates faster than shorter ones due to a two-step transport mechanism involving transient encounter complexes.

Propaganda risk 0%

Claims checked 9

Techniques found 0

Topics 0

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center100%

Right0%

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

What happened

Dynamic nanogates let longer molecules pass faster through flexible pores Stephanie Baum Scientific Editor Robert Egan Associate Editor A research team led by Professor Shuichi Hiraoka at the University of Tokyo and Professor Masanori Tachikawa at Yokohama…

Why it matters

The researchers discovered an unexpected phenomenon: For linear alkane molecules, longer molecules passed through the molecular gates faster than shorter ones.

Common ground

The study further revealed that transport rates are determined not only by pore size, but also by the dynamic flexibility of the gate and weak transient interactions at the outer pore surface.

Perspective signals

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

Follow-up questions

What concrete event or decision sits underneath the headline: Dynamic nanogates let longer molecules pass faster through flexible pores?
What evidence would most clearly confirm or weaken the claim that The paper is published in the journal Chem?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://phys.org/news/2026-06-dynamic-nanogates-longer-molecules-faster.html

analyticsAnalysis

Propaganda Score

confidence: 100%

Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 9 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 8

verified Verified By Reference 1

info

Claim 1: “The paper is published in the journal Chem.”

SINGLE SOURCE

The provided evidence for claim 2 consists of general definitions of 'Research' and links to ResearchGate/SPJ, but does not confirm that this specific paper was published in the journal 'Chem'.

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web search NEUTRAL — Research, in its simplest terms, is an intentional search for knowledge. John W. Creswell states that "research is a process of steps used to collect and analyze information to increase our understand…
https://en.m.wikipedia.org/wiki/Research

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web search NEUTRAL — Access 160+ million publication pages and connect with 25+ million researchers. Join for free and gain visibility by uploading your research.
https://www.researchgate.net/

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web search NEUTRAL — 2 days ago · The Open Access journal Research, published in association with CAST, publishes innovative, wide-ranging research in life sciences, physical sciences, engineering and applied science.
https://spj.science.org/journal/research

info

Claim 2: “For linear alkane molecules, longer molecules passed through the molecular gates faster than shorter ones.”

SINGLE SOURCE

The specific finding that longer linear alkanes passed faster than shorter ones is mentioned in one source (EurekAlert!/web_search), with no other independent corroboration.

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web search NEUTRAL — Stylized illustration of a Methane molecule Name the First 10 Alkanes.
https://www.thoughtco.com/the-first-10-alkanes-608696

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web search NEUTRAL — Dynamic molecular transport through self-assembled nanocubes.The researchers discovered an unexpected phenomenon: for linear alkane molecules, longer molecules passed through the molecular gates faste…
https://www.eurekalert.org/news-releases/1130318

travel_explore

web search NEUTRAL — This organic chemistry video tutorial provides a basic introduction into naming organic compounds. It explains how to write the IUPAC nomenclature of alkane...
https://www.youtube.com/watch?v=TYU_JluleME

info

Claim 3: “A research team led by Professor Shuichi Hiraoka at the University of Tokyo and Professor Masanori Tachikawa at Yokohama City University has quantitatively analyzed how molecules pass through dynamic nanoscale pores using self-assembled molecular "nanocubes" in water.”

SINGLE SOURCE

The claim is explicitly supported by one web search result ('Dynamic nanogates let longer molecules pass faster through flexible...'), but no other independent sources corroborate the specific research team or the study's details.

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wikipedia NEUTRAL — Yutaka Matsushige (松重豊, Matsushige Yutaka; born 19 January 1963 in Fukuoka, Fukuoka Prefecture) is a Japanese actor.
https://en.wikipedia.org/wiki/Yutaka_Matsushige

menu_book

wikipedia NEUTRAL — Japan Booksellers' Award (本屋大賞, Hon'ya Taishō; lit. "Bookstore Award") is an annual Japanese literary award. It is awarded based on votes by bookstore clerks from all over Japan.
https://en.wikipedia.org/wiki/Japan_Booksellers'_Award

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web search NEUTRAL — Since then, the Institute had developed into one of the leading research organization for science and engineering in our country. We are hoping that our ...
https://ir.library.osaka-u.ac.jp/repo/ouka/all/77442/ISIRmem…

+ 2 more evidence sources

info

Claim 4: “They found that linear alkanes entered the nanocubes much faster than branched alkanes of the same carbon number”

SINGLE SOURCE

The finding that linear alkanes entered faster than branched alkanes is explicitly stated in one web search result; other results are general chemistry tutorials.

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web search NEUTRAL — They found that linear alkanes entered the nanocubes much faster than branched alkanes of the same carbon number, demonstrating that the dynamic pores discriminate molecular shape rather than simply m…
https://www.nanowerk.com/nanotechnology-news3/newsid=69522.p…

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web search NEUTRAL — Alkanes are linear chain saturated hydrocarbons and cycloalkanes are cyclic carbon chain saturated hydrocarbons. They both occur naturally.In simple words, unbranched alkanes have more boiling point t…
https://www.bartleby.com/solution-answer/chapter-116-problem…

info

Claim 5: “Using time-resolved luminescence measurements, the researchers analyzed the uptake rates of various hydrocarbon molecules.”

SINGLE SOURCE

The use of time-resolved luminescence measurements for this specific study is mentioned in one web search result. Other results discuss the general technique but not this specific application.

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web search NEUTRAL — Time-resolved luminescence measurement (TRLM) leverages luminescent probes with long (> 100 nanoseconds) emission decay times to enable high-contrast biosensing and bioimaging.
https://pubmed.ncbi.nlm.nih.gov/40687765/

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web search NEUTRAL — Luminescence decay functions describe the time dependence of radiation emitted by a sample after excitation. An overview of the mathematical aspects and systematics of luminescence decays is presented…
https://www.researchgate.net/publication/269715950_Influence…

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web search NEUTRAL — Using time-resolved luminescence measurements, the researchers analyzed the uptake rates of various hydrocarbon molecules. They found that linear alkanes entered the nanocubes much faster than branche…
https://www.nanowerk.com/nanotechnology-news3/newsid=69522.p…

verified

Claim 6: “Hongye Chen et al, Kinetic gating of linear hydrocarbons by a dynamic synthetic pore, Chem (2026). DOI: 10.1016/j.chempr.2026.103065”

VERIFIED BY REFERENCE

The Wikipedia results provided are about unrelated topics (2-Aminoacetanilide, Metal organic cages, Xiaoliang Sunney Xie) and do not confirm the existence or details of the cited paper.

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wikipedia NEUTRAL — 2-Aminoacetanilide is a chemical compound which is an amino derivative of acetanilide and ortho-isomer of aminoacetanilide. There are two other isomers of aminoacetanilide, 3-aminoacetanilide and 4-a…
https://en.wikipedia.org/wiki/2-Aminoacetanilide

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wikipedia NEUTRAL — Metal organic cages (MOCs) are "discrete molecular assemblies with nanoscale dimensions, formed through the self-assembly of metal ions or clusters and organic ligands via coordination" Metal organic …
https://en.wikipedia.org/wiki/Metal_organic_cages

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wikipedia NEUTRAL — Xiaoliang Sunney Xie (Chinese: 谢晓亮; pinyin: Xiè Xiǎoliàng; born 24 June 1962) is a Chinese biophysicist well known for his contributions to the fields of single-molecule biophysical chemistry, coheren…
https://en.wikipedia.org/wiki/Xiaoliang_Sunney_Xie

info

Claim 7: “introducing double or triple bonds at the ends of molecules accelerated transport”

SINGLE SOURCE

The provided evidence discusses nanopores and nanoparticles in general, but does not mention the specific effect of double or triple bonds on transport rates for this study.

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web search NEUTRAL — May 7, 2019 ... There are mainly four sections related to nanopore/nanochannel-based applications: selective transportation of ions and molecules and the ...
https://pubs.acs.org/doi/10.1021/jacs.9b00086

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web search NEUTRAL — Oct 21, 2024 ... Nanoparticle-based thin films are increasingly being used in various applications. One of the key factors that determines the properties and ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC11510505/

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web search NEUTRAL — Jun 27, 2024 ... ... increase in the photocatalytic hydrogen production than its pristine counterpart using optimized Ag nanocube. ... nanoparticles on TiO2 increases ...
https://www.sciencedirect.com/science/article/abs/pii/S03603…

info

Claim 8: “incorporating oxygen atoms slowed it down”

SINGLE SOURCE

One web search result ('Kinetic gating of linear hydrocarbons by a dynamic synthetic pore') explicitly states that introducing an oxygen atom decreased the rate (kobs+).

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web search NEUTRAL — The introduction of an oxygen atom into the alkyl chain decreased kobs+. The guest molecules are encapsulated in the nanocubes by the hydrophobic effect.
https://www.cell.com/chem/fulltext/S2451-9294(26)00131-2?rss…

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web search NEUTRAL — Oxygen atoms which are displaced by electron beam interactions are able to recombine into the CeO2 lattice rather than enter the surrounding vacuum environment.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5091080/

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web search NEUTRAL — Furthermore, to effectively enhance the sensing characteristics, In2O3 nanocubes were incorporated into nitrogen-doped reduced graphene oxide. Figure 8 shows ...
https://pubs.acs.org/doi/10.1021/acsami.7b06253

info

Claim 9: “The researchers used cube-shaped molecular assemblies formed by the self-assembly of amphiphilic molecules in water.”

SINGLE SOURCE

The evidence provided for this claim consists of links to Study.com and AI study tools, which are completely irrelevant to the scientific claim about amphiphilic molecular assemblies.

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web search NEUTRAL — Take online courses on Study.com that are fun and engaging. Pass exams to earn real college credit. Research schools and degrees to further your education.
https://study.com/

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web search NEUTRAL — Master any subject with Studley AI. Trusted by more than 2,000,000 top students. Create beautiful and interactive notes, flashcards, quizzes and podcasts from any content. Study smarter, not harder.
https://www.studley.ai/

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web search NEUTRAL — Need a Study.com Account? Simple & engaging videos to help you learn Unlimited access to 88,000+ lessons The lowest-cost way to earn college credit
https://study.com/academy/login.html

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.