Revisiting the Gold-Carbon Stretching Frequency: Spectroscopic and Computational Analysis of N-Heterocyclic Carbene Monolayers on Nanostructured Gold Surfaces.

Matteo Albino, Jonathan P Wojciechowski, Molly M Stevens

Abstract read

In one paragraph

Article in Nano letters, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it

0cells of the map it votes in

0citing papers in PubMed

–field-weighted citation impact

1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Matteo AlbinoDepartment of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom.ORCID 0000-0002-8842-1146

Jonathan P WojciechowskiDepartment of Physiology, Anatomy and Genetics, Department of Engineering Science, Kavli Institute for Nanoscience Discovery, University of Oxford, Sherrington Rd, Oxford, OX1 3QU, United Kingdom.ORCID 0000-0002-6272-515X

Molly M StevensDepartment of Materials, Department of Bioengineering, and Institute of Biomedical Engineering, Imperial College London, London, SW7 2AZ, United Kingdom.ORCID 0000-0002-7335-266X

Funding

BII Foundation BII24SG1022032Department of Science, Innovation and Technology NADiabetes UK 22/0006503Engineering and Physical Sciences Research Council (EPSRC) EP/W524323/1Royal Academy of Engineering CiET2021\94University of Oxford NA

6 · The paper itself

Abstract

N-Heterocyclic carbenes (NHCs) are notable ligands in surface and nanomaterial chemistry due to their improved stability compared with thiol self-assembled monolayers (SAMs). This stability originates from a strong carbon-gold bond; hence, insights into binding of NHCs on metal surfaces are valuable, with implications in many fields. In this work, 5-functionalized 1,3-diisopropyl benzimidazolium NHCs were deposited on nanostructured gold and analyzed using surface-enhanced Raman spectroscopy (SERS) to study the tuning of the carbon-gold stretching frequency (ca. 800 cm-1) based on 11 derivatives. Density functional theory (DFT) analysis demonstrated that the C-Au bond strength is not reflected in the SERS vibration, but the R-group does influence the ligand-Au interaction, with more electron-donating groups associated with increased bond strength (up to 4.63 kcal mol-1). Therefore, the C-Au stretching frequency from the SERS spectra is not a direct measure of the carbon-gold bond strength.

Indexed as

Hammett constantnanostructured goldN-Heterocyclic carbeneSERS

Identifiers

PMID42584275

DOI10.1021/acs.nanolett.6c01487

PMCPMC13475047

What OpenQuestion holds

Textmetadata

Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.