# Covalent Functionalization of MXenes with Porphyrin for Visible‐Light Activation in Energy Conversion Nanodevices

https://mdr.nims.go.jp/datasets/a819a95d-7462-4715-932f-740645fe1656

## Files

- [Small - 2025 - Li - Covalent Functionalization of MXenes with Porphyrin for Visible‐Light Activation in Energy Conversion.pdf](https://mdr.nims.go.jp/filesets/473813b2-acbe-4bec-9b17-69495c467d34/download) ([Detail](https://mdr.nims.go.jp/filesets/473813b2-acbe-4bec-9b17-69495c467d34.md))

## Id

a819a95d-7462-4715-932f-740645fe1656

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-24T02:45:31.028578Z

## Updated at

2025-12-24T04:50:44.020321Z

## Published at

2025-12-24T07:20:29.316598Z

## Doi



## First published url

https://doi.org/10.1002/smll.202503895

## Date published

2025-08-03

## Recorded date published

2025-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Covalent Functionalization of MXenes with Porphyrin for Visible‐Light Activation
    in Energy Conversion Nanodevices
  title_type: original
  lang: en

## Description

- description: MXenes such as Ti₃C₂Tₓ and Ti₃CNTₓ are two‑dimensional materials whose
    surface terminations (Tₓ) passivate the otherwise reactive Ti surface. Tailoring
    this surface chemistry to anchor target molecules is a promising route to improve
    visible‑light‑to‑electricity conversion. Here, we report a covalent functionalization
    strategy that modifies the Tₓ terminations of Ti₃C₂Tₓ or Ti₃CNTₓ with alkyl amines,
    followed by coupling to a Zn‑porphyrin. This approach activates the optical response
    of MXenes without structural damage. Covalent attachment is confirmed by X‑ray
    photoelectron and infrared spectroscopy, while thermogravimetric analysis, transmission
    electron microscopy, and complementary techniques provide additional insight into
    structural and chemical changes. Spectroelectrochemical measurements reveal photoinduced
    carrier injection into the MXenes, consistent with enhanced conductivity under
    illumination. Photodetectors fabricated from these films exhibit responsivities
    of 1.4–15.0 A W⁻¹ and external quantum efficiencies of 1300–2830% across the visible
    range, comparable to established hybrid 2D nanomaterials such as MoS₂ and WS₂.
  description_type: abstract
  lang: und

## Creator

- name: Hong Li
  role: author
- name: Ruben Canton‐Vitoria
  role: author
- name: Yuto Urano
  role: author
  orcid: https://orcid.org/0009-0004-3646-2781
  organization: National Institute for Materials Science
- name: Sudhanshu Kumar Nayak
  role: author
- name: Eisuke Yamamoto
  role: author
- name: Makoto Kobayashi
  role: author
- name: Ryo Kitaura
  role: author
  orcid: https://orcid.org/0000-0001-8108-109X
  organization: National Institute for Materials Science
- name: Minoru Osada
  role: author
  orcid: https://orcid.org/0000-0002-6439-8068
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Wiley

## Managing organization



## Keyword

- subject: Functionalization
  schema: not_defined
- subject: spectroscopy
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2025-08-03

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Small
  issn: '16136810'
  volume: '21'
  issue: '38'
  article_number: e03895

## Conference



## Related item



## Funding



## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 473813b2-acbe-4bec-9b17-69495c467d34
  filename: Small - 2025 - Li - Covalent Functionalization of MXenes with Porphyrin
    for Visible‐Light Activation in Energy Conversion.pdf
  content_type: application/pdf
  size: 4110180
  md5: 2f0e7db854ed7e25fea93b8ee153d5f3

## Thumbnail

fileset_id: 473813b2-acbe-4bec-9b17-69495c467d34
filename: Small - 2025 - Li - Covalent Functionalization of MXenes with Porphyrin
  for Visible‐Light Activation in Energy Conversion.pdf