The improved stability of molecular guests by the confinement into nanospaces

A Teepakakorn, T Yamaguchi, M Ogawa - Chemistry Letters, 2019 - academic.oup.com
The stabilities of organic dyes have been controlled by host-guest complexation and the
hybrids have been regarded as novel photofunctional materials. In the present review, the …

On the interpretation of the Raman spectra of Maya Blue: a review on the literature data

A Doménech, MT Doménech‐Carbó… - Journal of Raman …, 2011 - Wiley Online Library
Abstract The Raman spectroscopy of Maya Blue (MB), a nanostructured organic–inorganic
hybrid material, has received considerable attention. A re‐evaluation of the Raman literature …

[HTML][HTML] Bio-friendly stable organic-inorganic hybrid pigments based on carminic acid and porous minerals: acid/base allochroic behavior and UV-stabilizing effects on …

B Szadkowski, W Maniukiewicz, P Rybiński… - Journal of …, 2022 - Elsevier
This paper presents the design of natural, high-performance hybrid pigments consisting of
carminic acid incorporated on different porous minerals. Raw sepiolite, palygorskite …

A combined synchrotron powder diffraction and vibrational study of the thermal treatment of palygorskite–indigo to produce Maya blue

M Sánchez del Río, E Boccaleri, M Milanesio… - Journal of Materials …, 2009 - Springer
Abstract The heating process (30–200° C) of a palygorskite-indigo mixture has been
monitored in situ and simultaneously by synchrotron powder diffraction and Raman …

Host/guest interactions in a sepiolite-based Maya blue pigment: A spectroscopic study

R Giustetto, K Seenivasan, F Bonino… - The Journal of …, 2011 - ACS Publications
Maya Blue pigment forms through heating-induced encapsulation and bonding of indigo in
microporous clays, namely, palygorskite or sepiolite. Stabilizing host/guest interactions in a …

Theoretical and experimental investigation on the spectroscopic properties of indigo dye

A Amat, F Rosi, C Miliani, A Sgamellotti… - Journal of Molecular …, 2011 - Elsevier
The spectroscopic properties of indigo, one of the most important natural dyes present in
nature, have been investigated by means of DFT and TD-DFT calculations and Raman and …

Influence of indigo-hydroxyl interactions on the properties of sepiolite-based Maya blue pigment

L Li, G Zhuang, M Li, P Yuan, L Deng, H Guo - Dyes and Pigments, 2022 - Elsevier
Maya blue is a greenish-blue and stable pigment composed of indigo and palygorskite or
sepiolite. Previous studies implied that the properties of Maya blue were influenced by …

Spectroscopic characterization and photo/thermal resistance of a hybrid palygorskite/methyl red Mayan pigment

R Giustetto, K Seenivasan, D Pellerej… - Microporous and …, 2012 - Elsevier
The structural features and host/guest interactions existing in a stable, red-purplish hybrid
material obtained by grinding and heating palygorskite clay with 2wt.% acid red 2 (methyl …

A new method to prepare 'Maya red'pigment from sepiolite and Basic red 46

H Chen, Z Zhang, G Zhuang, R Jiang - Applied Clay Science, 2019 - Elsevier
In the study, a new vacuum method was applied to prepare the hybrid pigments of sepiolite
and Basic red 46 (XL-GRL). Various hybrid pigments respectively prepared by the vacuum …

Indigo–sepiolite nanohybrids: Temperature-dependent synthesis of two complexes and comparison with indigo–palygorskite systems

S Ovarlez, F Giulieri, F Delamare, N Sbirrazzuoli… - Microporous and …, 2011 - Elsevier
There are conflicting reports on molecular interactions between indigo and the members of
the palygorskite family (natural porous clays) both components of the famous Maya Blue …