Exfoliation of 2D Metal‐Organic Frameworks: toward Advanced Scalable Materials for Optical Sensing

Exfoliation of 2D Metal‐Organic Frameworks: toward Advanced Scalable Materials for Optical Sensing Full article

Journal

Small Methods
ISSN: 2366-9608

Output data

Year: 2023, Volume: 2023, Article number : 2300752, Pages count : 9 DOI: 10.1002/smtd.202300752

Authors

Efimova Anastasiia S. ¹ , Alekseevskiy Pavel V. ¹ , Timofeeva Maria V. ¹ , Kenzhebayeva Yuliya A. ¹ , Kuleshova Alina O. ¹ , Koryakina Irina G. ¹ , Pavlov Dmitry I. ² , Sukhikh Taisiya S. ² , Potapov Andrei S. ² , Shipilovskikh Sergei A. ¹ , Li Nan ³ , Milichko Valentin A. ¹

Affiliations

1	School of Physics and Engineering ITMO University
2	Nikolaev Institute of Inorganic Chemistry Siberian Branch of the Russian Academy of Sciences
3	Tianjin Key Laboratory of Drug Delivery&High-Efficiency School of Pharmaceutical Science and Technology Tianjin University

Funding (2)

1	Ministry of Science and Higher Education of the Russian Federation	121031700321-3
2	Russian Science Foundation	22-72-10027

Two-dimensional metal-organic frameworks (MOFs) occupy a special place among the large family of functional 2D materials. Even at a monolayer level, 2D MOFs exhibit unique sensing, separation, catalytic, electronic, and conductive properties due to the combination of porosity and organo-inorganic nature. However, lab-to-fab transfer for 2D MOF layers faces the challenge of their scalability, limited by weak interactions between the organic and inorganic building blocks. Here, comparing three top-down approaches to fabricate 2D MOF layers (sonication, freeze-thaw, and mechanical exfoliation), The technological criteria have established for creation of the layers of the thickness up to 1 nm with a record aspect ratio up to 2*10ˆ4:1. The freezing-thaw and mechanical exfoliation are the most optimal approaches; wherein the rate and manufacturability of the mechanical exfoliation rivaling the greatest scalability of 2D MOF layers obtained by freezing-thaw (21300:1 vs 1330:1 aspect ratio), leaving the sonication approach behind (with a record 900:1 aspect ratio) have discovered. The high quality 2D MOF layers with a record aspect ratio demonstrate unique optical sensitivity to solvents of a varied polarity, which opens the way to fabricate scalable and freestanding 2D MOF-based atomically thin chemo-optical sensors by industry-oriented approach.

Efimova A.S. , Alekseevskiy P.V. , Timofeeva M.V. , Kenzhebayeva Y.A. , Kuleshova A.O. , Koryakina I.G. , Pavlov D.I. , Sukhikh T.S. , Potapov A.S. , Shipilovskikh S.A. , Li N. , Milichko V.A.
Exfoliation of 2D Metal‐Organic Frameworks: toward Advanced Scalable Materials for Optical Sensing
Small Methods. 2023. V.2023. 2300752 :1-9. DOI: 10.1002/smtd.202300752 WOS Scopus OpenAlex

Submitted:	Jun 16, 2023
Accepted:	Aug 18, 2023
Published print:	Sep 13, 2023
Published online:	Sep 13, 2023

Web of science:	WOS:001064551600001
Scopus:	2-s2.0-85170553819
OpenAlex:	W4386704425

DB	Citing
Scopus	16
OpenAlex	25
Web of science	23