نتایج جستجو برای: organic crystals

تعداد نتایج: 254288  

Journal: :Chemical communications 2005
C Malla Reddy Ravi C Gundakaram Srinivas Basavoju Michael T Kirchner K Anantha Padmanabhan Gautam R Desiraju

Bending is observed in organic crystals when the packing is anisotropic in such a way that strong and weak interaction patterns occur in nearly perpendicular directions.

2017
Jiyoung Lee Ja Hun Kwak Wonyoung Choe

Self-assembly has proven to be a widely successful synthetic strategy for functional materials, especially for metal-organic materials (MOMs), an emerging class of porous materials consisting of metal-organic frameworks (MOFs) and metal-organic polyhedra (MOPs). However, there are areas in MOM synthesis in which such self-assembly has not been fully utilized, such as controlling the interior of...

2016
Francesco Di Maiolo Cristina Sissa Anna Painelli

Organic ferroelectric materials are currently a hot research topic, with mixed stack charge transfer crystals playing a prominent role with their large, electronic-in-origin polarization and the possibility to tune the transition temperature down to the quantum limit and/or to drive the ferroelectric transition via an optical stimulus. By contrast, and in spite of an impressive research effort,...

Journal: :Chemical communications 2007
Yuya Oaki Shinichiro Hayashi Hiroaki Imai

Calcite crystals grown with association of an organic gel matrix led to the generation of a hierarchical, self-similar architecture possessing rhombohedral habit under ambient conditions.

Fluoride is now accessible in a variety of forms, including water, toothpaste, mouth rinses, and professional fluoride therapy at dental clinics. A body of data supports the use of systemic and topical fluoride from various sources to prevent dental caries. Fluoride ions are absorbed by the enamel prior to tooth eruption and produce fluorohydroxyapatite, which is more resistant to acid attack t...

2017
Zhao Yuan Chenkun Zhou Yu Tian Yu Shu Joshua Messier Jamie C Wang Lambertus J van de Burgt Konstantinos Kountouriotis Yan Xin Ethan Holt Kirk Schanze Ronald Clark Theo Siegrist Biwu Ma

Organic-inorganic hybrid metal halide perovskites, an emerging class of solution processable photoactive materials, welcome a new member with a one-dimensional structure. Herein we report the synthesis, crystal structure and photophysical properties of one-dimensional organic lead bromide perovskites, C4N2H14PbBr4, in which the edge sharing octahedral lead bromide chains [PbBr4 2-]∞ are surroun...

Journal: :Chemical reviews 2004
Oksana Ostroverkhova W E Moerner

5.3.2. Traps and Grating Dark Decay 3288 5.3.3. Other Concerns 3288 6. New Photorefractive Materials 3289 6.1. Polymer Composites 3289 6.2. Organic Amorphous Glasses 3292 6.3. Fully Functionalized Polymers 3294 6.4. Polymer-Dispersed Liquid Crystals 3295 6.5. Other Liquid Crystal-Containing Materials 3296 6.6. Near-Infrared-Sensitive Materials 3297 6.7. Other Materials Directions 3298 6.7.1. Hy...

Journal: :Journal of the American Chemical Society 2009
Tendai Gadzikwa Omar K Farha Christos D Malliakas Mercouri G Kanatzidis Joseph T Hupp SonBinh T Nguyen

A noncatenated, Zn-based metal-organic framework (MOF) material bearing silyl-protected acetylenes was constructed and postsynthetically modified using "click" chemistry. Using a solvent-based, selective deprotection strategy, two different organic azides were "clicked" onto the MOF crystals, resulting in a porous material whose internal and external surfaces are differently functionalized.

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