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Chemistry Proceedings, Volume 9, Issue 1

2022 IOCC 2022 - 19 articles

The 3rd International Online Conference on Crystals

Online | 15–30 January 2022

Volume Editor:
Helmut Cölfen, Universität Konstanz, Germany

Cover Story: This volume gathers the papers that were presented at the 3rd International Online Conference on Crystals held from 15 to 30 January 2022 in Sciforum. This is a new and improved initiative based on the experience from the previous two editions, which affords the opportunity for researchers engaged in the study of crystalline materials to present their research and exchange ideas with their colleagues. The conference was organized around the following topics and related themes: Liquid Crystals, Organic Crystalline Materials, Inorganic Crystalline Materials, Crystal Engineering, Biomolecular Crystals, Macromolecular Crystals, Hybrid and Composite Crystalline Materials, Minerals and Biominerals, Industrial Crystallization, Phase Transformations in Crystalline Materials, and Software/Tools to Deal with Crystal and Crystallographic Issues.
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Articles (19)

  • Proceeding Paper
  • Open Access
2 Citations
1,740 Views
9 Pages

This work aims at the production of uniformly sized, equant shaped crystals using a direct nucleation control (DNC) strategy to help achieve enhanced manufacturability and bioavailability of the active pharmaceutical ingredients (API). A crystallizat...

  • Proceeding Paper
  • Open Access
2 Citations
1,752 Views
7 Pages

Photovoltaic Properties and Microstructures of Polysilane-Added Perovskite Solar Cells

  • Shinichiro Mizuno,
  • Takeo Oku,
  • Atsushi Suzuki,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

CH3NH3PbI3 perovskite photovoltaic devices inserted with a polysilane layer were fabricated and characterized. A Decaphenylcyclopentasilane (DPPS) in chlorobenzene solution was spin-coated between the perovskite layer and the hole transport layer of...

  • Proceeding Paper
  • Open Access
1,129 Views
5 Pages

High-resolution birefringence measurements and modulated differential scanning calorimetry have been carried out in order to investigate the critical behaviour near the isotropic to smectic-A, smectic-A to smectic-C* phase transitions associated with...

  • Proceeding Paper
  • Open Access
1 Citations
1,650 Views
5 Pages

Fabrication and Characterization of New Er-Doped Yttrium–Scandium–Aluminum–Garnet Ceramics

  • Elena Dobretsova,
  • Vadim Zhmykhov,
  • Sergey Kuznetsov,
  • Marina Nikova,
  • Irina Chikulina,
  • Vitaly Tarala,
  • Dmitry Vakalov,
  • Roman Khmelnitsky,
  • Lubov Badyanova and
  • Vladimir Tsvetkov
  • + 4 authors

We report the fabrication and characterization of yttrium–aluminum–garnet (Er:YAG) and yttrium–scandium–aluminum–garnet (Er:YSAG) ceramics for the implementation of analysis as an active medium for 1500 nm lasing. High e...

  • Abstract
  • Open Access
964 Views
1 Page

The Effect of Controlled Mixing on ROY Polymorphism

  • Margot Van Nerom,
  • Dominique Maes,
  • James F. Lutsko and
  • Quentin Galand

In this work, we report the investigation of various experimental conditions and their influence on the polymorphism of 5-methyl-2-[(2-nitrophenyl)amino]-3-thiophen carbonitrile, commonly known as ROY. These conditions include an in-house-developed m...

  • Proceeding Paper
  • Open Access
2 Citations
1,553 Views
5 Pages

Effects of Cu, K, and Guanidinium Addition to CH3NH3PbI3 Perovskite Solar Cells

  • Ayu Enomoto,
  • Atsushi Suzuki,
  • Takeo Oku,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

Fabrication and characterization of CH3NH3PbI3 perovskite solar cell with the addition of copper (Cu2+), and potassium (K) or guanidinium (GA) was performed. The additive effects on the photovoltaic properties, morphologies, and crystalline structure...

  • Proceeding Paper
  • Open Access
1 Citations
2,235 Views
7 Pages

Rapidly expanding and new applications of liquid crystal materials cover a wide range of technology products. A very incomplete list includes conventional and miniature high-resolution displays, AR/VR glasses, smart windows, dynamic lenses, tunable f...

  • Abstract
  • Open Access
1,102 Views
2 Pages

Coal Fly Ash Zeolites—From Synthesis to Application in Acetone Optical Detection

  • Katerina Lazarova,
  • Silviya Boycheva,
  • Marina Vasileva,
  • Denitza Zgureva-Filipova and
  • Tsvetanka Babeva

Recently, a widely used method for recycling fly ash waste of coal collected from the electrostatic precipitators has been the synthesis of zeolites from this waste material [...]

  • Proceeding Paper
  • Open Access
2 Citations
2,108 Views
9 Pages

Fabrication and Characterization of Ethylammonium- and Rubidium-Added Perovskite Solar Cells

  • Keinoshin Takada,
  • Takeo Oku,
  • Atsushi Suzuki,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

Conversion efficiencies and stability of the perovskite solar cells were improved by adding a small amount of ethylammonium (EA) and rubidium (Rb) to the CH3NH3PbI3 compounds. Addition of ethylamine hydrobromide and rubidium iodide provided an increa...

  • Proceeding Paper
  • Open Access
1 Citations
1,972 Views
9 Pages

Effects of Guanidinium Addition to CH3NH3PbI3 Perovskite Solar Cells Inserted with Decaphenylpentasilane

  • Iori Ono,
  • Takeo Oku,
  • Atsushi Suzuki,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

Effects of addition of guanidinium [C(NH2)3; GA] on MAPbI3 perovskite solar cells fabricated at a high temperature of 190 °C in atmospheric air were investigated on the photovoltaic properties and first principles calculations. The addition of gu...

  • Proceeding Paper
  • Open Access
1,937 Views
6 Pages

Fabrication and Characterization of Perovskite Solar Cells Using Copper Phthalocyanine Complex with Tetracyanoquinodimethane

  • Atsushi Suzuki,
  • Ryota Hasegawa,
  • Takeo Oku,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

In this paper, the fabrication and characterization of CH3NH3PbI3 perovskite solar cells using decaphenylpentacyclosilane, copper phthalocyanine complex (CuPc) doped with tetracyanoquinodimethane (TCNQ), was performed. The effects of a carboxylic aci...

  • Proceeding Paper
  • Open Access
2,185 Views
7 Pages

The effects of maxed-valence states on electronic structures of europium (Eu)-incorporated CH(NH2)2PbI3 (FAPbI3) and CH3NH3PbI3 (MAPbI3) perovskite crystals were investigated by first-principles calculation. Partial replacements of europium ions into...

  • Proceeding Paper
  • Open Access
1,464 Views
6 Pages

Effects of Co-Addition of Copper, Sodium and Ethylammonium to CH3NH3PbI3 Perovskite Compound

  • Riku Okumura,
  • Takeo Oku,
  • Atsushi Suzuki,
  • Masanobu Okita,
  • Sakiko Fukunishi,
  • Tomoharu Tachikawa and
  • Tomoya Hasegawa

From the band calculation, the copper d-orbital band formed slightly above the valence band maximum would function as an acceptor level promoting the generation of carriers. In addition, the excitation processes from the p-orbital of iodine and the d...

  • Proceeding Paper
  • Open Access
1,191 Views
9 Pages

Structural Study of a Pd–Fe Hetero-Trinuclear Compound

  • Paula Munín-Cruz,
  • Marcos Rúa-Sueiro,
  • Juan M. Ortigueira,
  • María Teresa Pereira and
  • José M. Vila

Cyclometallated compounds, specifically cyclopalladates, have been synthesized for years. In this work, we describe a new family of compounds in which an iron core has been introduced in addition to Pd. This novel characteristic provides interesting...

  • Proceeding Paper
  • Open Access
1 Citations
2,894 Views
5 Pages

Over the last decade, continuous manufacturing techniques have been increasingly used in the pharmaceutical manufacturing industry. However, despite the outstanding performance associated with the steady-state operation, continuous processes face com...

  • Proceeding Paper
  • Open Access
1 Citations
1,553 Views
7 Pages

Physico-Chemical Interaction in the Ag2Se–Zn(Cd, Hg, Pb)Se–SnSe2 Systems

  • Lyudmyla Piskach,
  • Olga Velychko,
  • Anatolii Fedorchuk,
  • Yuri Kogut,
  • Ivan Olekseyuk and
  • Oleg Parasyuk

The quaternary compounds AI2BIICIVX4, where AI–Cu, Ag; BII–Zn, Cd, Hg; CIV–Si, Ge, Sn; and X–S, Se, Te, crystallize in non-centrosymmetric structures and may be of interest for nonlinear optics. Here, we present in detail isot...

  • Proceeding Paper
  • Open Access
2,101 Views
8 Pages

X-ray Diffraction Study of Fluorine-Functionalized Thiosemicarbazones and Cyclometallated Compounds

  • Marcos Rúa-Sueiro,
  • Paula Munín-Cruz,
  • Juan M. Ortigueira and
  • José M. Vila

In this work, an X-ray diffraction study of fluorine-functionalized thiosemicarbazone ligands and their corresponding cyclometallated compounds is discussed. The results are in agreement with previous characterization by IR spectroscopy, 1H and 19F N...

  • Proceeding Paper
  • Open Access
2,047 Views
9 Pages

In this study, two novel spherical agglomeration processes based on membrane systems were successfully implemented to produce spherical agglomerates of benzoic acid crystals obtained via antisolvent crystallization. Two membrane configurations were c...

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Chem. Proc. - ISSN 2673-4583