What question did this study set out to answer?

To develop a rapid, label-free Raman assay using molecularly imprinted nanoprobes for selective quantification and structural identification of glycated hemoglobin (HbA1c).

August 20, 2026Analytical Chemistry

Rationally Engineered Molecularly Imprinted Nanoprobe Enables Facile and Label-Free Targeted Aggregation-Enhanced Raman Assay of HbA1c

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To develop a rapid, label-free Raman assay using molecularly imprinted nanoprobes for selective quantification and structural identification of glycated hemoglobin (HbA1c).
Engineered a molecularly imprinted nanoprobe using a characteristic HbA1c glycation fragment template deposited on a Raman-enhancing core substrate.
Controlled imprinting layer thickness to selectively trap HbA1c and trigger targeted aggregation into electromagnetic hot spots.
Assessed analytical sensitivity, molecular fingerprint acquisition, and quantitative detection limits across heavily diluted test samples.
Selective nanoprobe interaction triggered targeted aggregation, confining HbA1c within hot spot zones to amplify intrinsic Raman signals without external labeling reagents.
Achieved detection of HbA1c at the ng/mL concentration level in test samples following a 10^4-fold dilution.
Delivered simultaneous quantitative readout and structural fingerprint information with minimal sample volume and rapid turnaround.

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Implication

Laboratory study demonstrates label-free aggregation-enhanced Raman detection of HbA1c at nanogram levels, indicating potential for point-of-care diabetes diagnostics.

Cite This Study

Lyu et al. (2026) studied this question.

synapsesocial.com/papers/6a86b56c8a91293e6a1cccd7 https://doi.org/10.1021/acs.analchem.6c04058

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Implication

Laboratory study demonstrates label-free aggregation-enhanced Raman detection of HbA1c at nanogram levels, indicating potential for point-of-care diabetes diagnostics.

Rationally Engineered Molecularly Imprinted Nanoprobe Enables Facile and Label-Free Targeted Aggregation-Enhanced Raman Assay of HbA1c

Key Points

Discussion

Implication

Cite This Study

Rationally Engineered Molecularly Imprinted Nanoprobe Enables Facile and Label-Free Targeted Aggregation-Enhanced Raman Assay of HbA1c

Key Points

Discussion

Implication

Cite This Study

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