Results 251 to 260 of about 810,857 (303)

Reversible single-crystal to single-crystal transformation between triangular single-molecule toroics

Dalton Transactions, 2023
Single-crystal to single-crystal transformation by solvent exchange provides a new way to study magneto-structural relationships in single-molecule magnets.
Lixi Feng, Yue Yang, Yu-Xia Wang, Yizhen Zhao, Zhong-Yi Liu, Junzhuang Cong, Yi-Quan Zhang, Peng Cheng   +7 more
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Single-Crystal-to-Single-Crystal Topochemical Polymerizations by Design

Accounts of Chemical Research, 2008
The polymerization of simple conjugated dienes has long been of interest: polydienes occur throughout Nature, and polyisoprene and its analogues form the basis of entire industries. In contrast, the polymers of similar small conjugated compounds, diacetylenes, trienes, and triacetylenes, are either unknown or laboratory curiosities.
Joseph W, Lauher, Frank W, Fowler, Nancy S, Goroff   +2 more
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Single‐chain single crystals

Macromolecular Symposia, 1997
AbstractSingle‐chain single crystals of isotactic polystyrene and poly(ethylene oxide) were studied by using transmission electron microscopy, high resolution electron microscopy, electron diffraction. Single‐chain single crystals were prepared by spreading a dilute solution of polymers on a water surface and collecting the resulting single‐chain ...
Jie Cao, Fangming Gu, Yongjian Liu, Shuguang Bi, Haishan Bu, Ze Zhang   +5 more
openaire   +1 more source

Single‐molecule single crystals

Journal of Polymer Science Part B: Polymer Physics, 1991
AbstractVarious approaches to the preparation and verification of single‐molecule single crystals are discussed for polyethylene and poly (oxyethylene). Analytic tools are electron microscopy, electron diffraction, and differential scanning calorimetry.
Haishan Bu, Yanwan Pang, Dandan Song, Tongyin Yu, T. M. Voll, George Czornyj, B. Wunderlich   +6 more
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Single-crystal-to-single-crystal intercalation of a low-bandgap superatomic crystal

Nature Chemistry, 2017
The controlled introduction of impurities into the crystal lattice of solid-state compounds is a cornerstone of materials science. Intercalation, the insertion of guest atoms, ions or molecules between the atomic layers of a host structure, can produce novel electronic, magnetic and optical properties in many materials.
Evan S. O'Brien, M. Tuan Trinh, Rose L. Kann, Jia Chen, Giselle A. Elbaz, Amrita Masurkar, Timothy L. Atallah, Maria V. Paley, Nilam Patel, Daniel W. Paley, Ioannis Kymissis, Andrew C. Crowther, Andrew J. Millis, David R. Reichman, X.-Y. Zhu, Xavier Roy   +15 more
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Unprecedented crystal dynamics: reversible cascades of single-crystal-to-single-crystal transformations

Chemical Communications, 2012
A series of Cu(II) complexes showed unprecedented reversible cascades of single-crystal-to-single-crystal (SCSC) transformations, and more interestingly, very rapid crystal dynamic processes were observed in this system via the substitution of coordinating components without loss of single crystallinity.
Gao-Chao, Lv, Peng, Wang, Qing, Liu, Jian, Fan, Kai, Chen, Wei-Yin, Sun   +5 more
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Single-Chain Single Crystal

1994
A new method that makes use of monomolecular patches on a liquid surface has been developed for the crystallization of single chain, and single-chain single crystals of poly(ethylene-oxide) and isotactic polystyrene were investigated. The molecular mass and molecular mass distribution of samples could be found to match a statistical analysis of single ...
Haishan Bu, Erqiang Chen, Shengyong Xu
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Single crystals of inulin

International Journal of Biological Macromolecules, 1996
Lamellar crystals of inulin were grown by crystallizing sharp fractions of low molecular weight inulin from dilute aqueous ethanol solutions. The crystals were analyzed using three-dimensional electron diffraction and X-ray powder diagrams. Two crystalline polymorphs were observed, depending on the hydration conditions: a hydrated form which indexed on
Andre, I., Putaux, J.L., Chanzy, H., Taravel, F.R., Timmermans, J.W., de Wit, D.   +5 more
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Bioengineering Single Crystal Growth

Journal of the American Chemical Society, 2011
Biomineralization is a "bottom-up" synthesis process that results in the formation of inorganic/organic nanocomposites with unrivaled control over structure, superior mechanical properties, adaptive response, and the capability of self-repair. While de novo design of such highly optimized materials may still be out of reach, engineering of the ...
Ching-Hsuan, Wu, Alexander, Park, Derk, Joester   +2 more
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Polymorphic single crystal ↔ single crystal transition in K0.975Rb0.025NO3

Crystallography Reports, 2010
Polymorphic transformations in K0.975Rb0.025NO3 single crystals have been investigated by optical microscopy and X-ray diffraction. The equilibrium temperature between modifications II and III has been determined. It is established that the crystal growth at II ↔ III polymorphic transitions is accompanied by the formation and growth of daughter ...
Yu. G. Asadov, E. V. Nasirov
openaire   +1 more source