Results 31 to 40 of about 123,837 (223)

Poly(1,4‐anthraquinone) as an Organic Electrode Material: Interplay of the Electronic and Structural Properties due to the Unusual Lone‐Pair‐π Conjugation

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
In this study, the unique role of the unusual lone‐pair‐π conjugation mechanism in poly(1,4‐anthraquinone) (P14AQ) is explored as an organic electrode material. Unlike traditional π‐π interactions, P14AQ's conjugation involves lone pairs of oxygen atoms interacting with the π cloud of adjacent units, enabling stable charge transport even with minimal π‐
Xiaotong Zhang, Piotr de Silva
wiley   +1 more source

Closed forms and multi-moment maps

, 2011
We extend the notion of multi-moment map to geometries defined by closed forms of arbitrary degree. We give fundamental existence and uniqueness results and discuss a number of essential examples, including geometries related to special holonomy.
A. Gray, A.F. Swann, A.F. Swann, A.L. Besse, Andrew Swann, C. Bär, D. Conti, D. Joyce, E. Bonan, F. Reidegeld, F. Reidegeld, F. Witt, G. Cairns, G. Hochschild, H. Baum, J. Dixmier, J.C. Baez, J.C. Baez, J.F. Cariñena, J.F. Cariñena, K.H. Neeb, M. Berger, M. Freibert, M. Freibert, R.L. Bryant, R.L. Bryant, S. Karigiannis, T. Friedrich, T.B. Madsen, T.B. Madsen, Thomas Bruun Madsen, U. Gran, Y.S. Poon   +32 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

Advanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu, Giovanni Gammaitoni, Michael Häfner, Eduardo Villalobos‐Portillo, Carlo Marini, Matteo Bianchini   +5 more
wiley   +1 more source

Slant helices in three dimensional lie groups

, 2012
In this paper, we define slant helices in three dimensional Lie Groups with a bi-invariant metric and obtain a characterization of slant helices. Moreover, we give some relations between slant helices and their involutes, spherical images.Comment: 15 ...
Ekmekci, N., Gök, I., Okuyucu, O. Zeki, Yayli, Y.   +3 more
core   +1 more source

Continuous cohomology of groups and classifying spaces

, 1978
Topological groups exhibit one of the richest structures in mathematics, both because of the variety of significant examples and because of the interplay between topology and algebra. The examples range through geometry and into the study of differential
J. Stasheff
semanticscholar   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

Leibniz algebroids, twistings and exceptional generalized geometry

, 2011
We investigate a class of Leibniz algebroids which are invariant under diffeomorphisms and symmetries involving collections of closed forms. Under appropriate assumptions we arrive at a classification which in particular gives a construction starting ...
Atiyah, Baez, Bi, Courant, Cremmer, D. Baraglia, Dorfman, Fulton, Hagiwara, Hitchin, Hull, Hull, Ibáñez, Kosmann-Schwarzbach, Kraines, Kuranishi, Lada, Lada, Liu, Loday, Mackenzie, Mackenzie, May, Merkulov, Pacheco, Quillen, Roytenberg, Sullivan, Takhtajan, Terng, Varadarajan, Voronov, Voronov, Wade, Wells, Witt   +35 more
core   +1 more source

3D (Bio) Printing Combined Fiber Fabrication Methods for Tissue Engineering Applications: Possibilities and Limitations

Advanced Functional Materials, EarlyView.
Biofabrication aims at providing innovative technologies and tools for the fabrication of tissue‐like constructs for tissue engineering and regenerative medicine applications. By integrating multiple biofabrication technologies, such as 3D (bio) printing with fiber fabrication methods, it would be more realistic to reconstruct native tissue's ...
Waseem Kitana, Indra Apsite, Leonid Ionov   +2 more
wiley   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

Advanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai, Md Shakhawath Hossain, Nhat Minh Nguyen, Yongliang Chen, Chaohao Chen, Xiaoxue Xu, Quang Thang Trinh, Toan Dinh, Toan Trong Tran   +8 more
wiley   +1 more source

Noncommutative Geometries and Gravity

, 2007
We briefly review ideas about ``noncommutativity of space-time'' and approaches toward a corresponding theory of gravity.Comment: 18 pages, to appear in the Proceedings of the Third Mexican Meeting on Mathematical and Experimental Physics, Symposium on
Abel Camacho, Alfredo Macias, Claus Lämmerzahl, Folkert Müller-Hoissen   +3 more
core   +1 more source