Literature DB >> 27057926

Aggregation-Induced Resonance Raman Optical Activity (AIRROA): A New Mechanism for Chirality Enhancement.

Grzegorz Zajac1,2, Agnieszka Kaczor1,2, Ana Pallares Zazo2, Jacek Mlynarski1, Monika Dudek1, Malgorzata Baranska1,2.   

Abstract

Raman optical activity (ROA) spectroscopy is hampered by low sensitivity, with limited possibilities for enhancing the signal. In the present study, we report a new mechanism whereby chirality is enhanced using the resonance resulting from supramolecular aggregation. We have named this mechanism aggregation-induced resonance Raman optical activity (AIRROA). As an example, we study J-aggregates of astaxanthin (AXT), which show strong absorption of circularly polarized light in the range of ROA excitation. The implications of aggregation-induced signal enhancement for chiroptical spectroscopy are discussed.

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Year:  2016        PMID： 27057926     DOI： 10.1021/acs.jpcb.6b02273

Source DB:  PubMed          Journal:  J Phys Chem B        ISSN： 1520-5207            Impact factor:   2.991


  3 in total

1.  The Importance of Solvent Effects on the Mechanism of the Pfeiffer Effect.

Authors:  Jamie L Lunkley; Ngoc M Nguyen; Kristina M Tuminaro; Dana Margittai; Gilles Muller
Journal:  Inorganics (Basel)       Date:  2018-08-29

2.  Resonance Raman Optical Activity Shows Unusual Structural Sensitivity for Systems in Resonance with Multiple Excited States: Vitamin B12 Case.

Authors:  Ewa Machalska; Grzegorz Zajac; Anna Gruca; Fabio Zobi; Malgorzata Baranska; Agnieszka Kaczor
Journal:  J Phys Chem Lett       Date:  2020-06-16       Impact factor: 6.475

3.  Raman and ROA analyses of twisted anthracenes: connecting vibrational and electronic/photonic structures.

Authors:  Luis Palomo; Fernando Gordillo Gámez; Anjan Bedi; Ori Gidron; Juan Casado; Francisco J Ramírez
Journal:  Phys Chem Chem Phys       Date:  2021-06-30       Impact factor: 3.676
  3 in total

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