Bisignate Surface-Enhanced Raman Optical Activity with Analyte-Capped Colloids
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F25%3A00618275" target="_blank" >RIV/61388963:_____/25:00618275 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/25:73630406 RIV/60461373:22340/25:43933698
Result on the web
<a href="https://doi.org/10.1021/acsnano.4c19027" target="_blank" >https://doi.org/10.1021/acsnano.4c19027</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsnano.4c19027" target="_blank" >10.1021/acsnano.4c19027</a>
Alternative languages
Result language
angličtina
Original language name
Bisignate Surface-Enhanced Raman Optical Activity with Analyte-Capped Colloids
Original language description
Spectroscopic detection of chiral compounds is often hampered by a low sensitivity. For Raman optical activity (ROA), the signal can be dramatically increased in surface-enhanced experiments. So far, however, reproducible surface-enhanced ROA (SEROA) spectra were obtained for a reporter molecule only via induced chirality, and the intensities were just proportional to the Raman scattering. In the present study, we show that the signal can be substantially increased if colloidal silver nanoparticles are prepared already in the presence of a chiral analyte. In this case, both the analyte's and reporter's bands are visible. In addition, some experiments provided bisignate SEROA patterns, thus significantly enhancing information about the molecular structure provided by this spectroscopic method. Increased electronic circular dichroism (ECD) of the capped aggregated colloids suggests that ECD and polarized Raman scattering (ECD-Raman) contribute to the monosignate SEROA intensities, while well-dispersed nonaggregating colloids are important for observation of true (bisignate) molecular vibrational SEROA.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
<a href="/en/project/GA25-15726S" target="_blank" >GA25-15726S: Exploration of new forms of Raman optical activity</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS Nano
ISSN
1936-0851
e-ISSN
1936-086X
Volume of the periodical
19
Issue of the periodical within the volume
10
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
10412-10420
UT code for WoS article
001440338300001
EID of the result in the Scopus database
2-s2.0-105001078790