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Updated: Feb 24, 2026

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes

Engineering Molecular Recognition with Bio-mimetic Polymers on Single Walled Carbon Nanotubes

Published on: January 10, 2017

Fluorescent Ultrashort Nanotubes.

Benjamin Eller¹, Zhulfaa Zhulficar¹, Fatemeh Hajikarimi¹

¹Department of Chemistry and Biochemistry University of Maryland 8051 Regents Drive College Park, Maryland 20742 United States.

Accounts of Chemical Research

|February 23, 2026

Summary

This summary is machine-generated.

Researchers developed fluorescent ultrashort nanotubes (FUNs) by introducing quantum defects, enabling bright light emission for advanced applications. This breakthrough overcomes previous optical limitations in short carbon nanotubes.

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Area of Science:

Materials Science
Nanotechnology
Quantum Chemistry

Background:

Ultrashort single-walled carbon nanotubes (SWCNTs) possess dimensions suitable for biological pores and quantum devices.
However, their optical properties are limited due to exciton diffusion to quenching sites at tube ends.
This
Purpose_of_the_Study

Purpose of the Study:

To overcome the optical limitations of ultrashort SWCNTs.
To develop a platform for ultrashort nanotubes with tunable optical and functional properties.
To explore applications in sensing, imaging, and optoelectronics.

Main Methods:

Quantum defect chemistry to introduce molecularly tunable exciton traps (organic color centers).
Super-resolution fluorescence imaging to observe defect localization and emission.
Defect-induced chemical etching (DICE) to precisely cut SWCNTs into ultrashort segments.

Main Results:

Fluorescent ultrashort nanotubes (FUNs) exhibit bright photoluminescence in the short-wave infrared, including the NIR-II window.
FUNs demonstrate defect-governed radiative recombination, overcoming the excitonic dark gap.
DICE produces ultrashort nanotubes with intact frameworks and chemically defined termini, enabling tunable ionic transport.

Conclusions:

FUNs provide a chemically precise architecture for ultrashort nanotubes, enabling control over quantum confinement and photophysics.
The length-energy decoupling of host and defect excitons offers independent design parameters.
FUNs open avenues for biomimetic channels, nanofluidic elements, infrared imaging, and quantum emitters.