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Single-Molecule Diffusion and Assembly on Polymer-Crowded Lipid Membranes

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Non-covalent assembly-enabled selectivity in aqueous microdroplets.

Zhiheng Ma¹, Pengju Wu¹, Xianlong Zhou¹

¹Jiangsu Co-Innovation Centre of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University Nanjing 210037 China xianlongzhou@njfu.edu.cn yujing@njfu.edu.cn.

Chemical Science

|March 11, 2026

Summary

This summary is machine-generated.

Chemoselective hydrogenation of biomass molecules is achieved using self-assembly in microdroplets. This catalyst-free method controls reactivity via hydrogen bonding, offering a sustainable approach for selective chemical transformations.

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Area of Science:

Green Chemistry
Supramolecular Chemistry
Chemical Engineering

Background:

Microdroplets accelerate reactions, but controlling chemoselectivity is challenging.
Sustainable synthesis of biomass-derived molecules requires selective transformations.
Catalyst-free methods are desirable for environmental and economic benefits.

Purpose of the Study:

To demonstrate catalyst-free, selective hydrogenation of multifunctional biomass molecules using microdroplets.
To investigate the role of non-covalent self-assembly in directing chemoselectivity.
To establish a general design principle for controlling reactivity in confined environments.

Main Methods:

Utilizing sprayed microdroplets for reactions.
Employing 5-hydroxymethylfurfural as a model substrate.
Spectroscopic measurements and density functional theory (DFT) calculations.
Investigating hydrogen bonding and supramolecular assembly.

Main Results:

Selective hydrogenation of the furan ring in 5-hydroxymethylfurfural via self-assembly.
Hydrogen bonding shields reactive moieties, directing site-specific reduction.
Demonstrated tunable product selectivity for furfural and furfuryl alcohol.
Observed competing oxidation in substrates lacking hydrogen-bonding motifs.

Conclusions:

Non-covalent self-assembly in microdroplets enables catalyst-free chemoselective hydrogenation.
Molecular recognition driven by hydrogen bonding is key to controlling reactivity.
This strategy offers a sustainable pathway for selective transformations of biomass-derived molecules.