Journal ArticleDOI
Strong two-photon absorption of singlet diradical hydrocarbons.
Kenji Kamada,Koji Ohta,Takashi Kubo,Akihiro Shimizu,Yasushi Morita,Kazuhiro Nakasuji,Ryohei Kishi,Suguru Ohta,Shin Ichi Furukawa,Hideaki Takahashi,Masayoshi Nakano +10 more
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This article is published in Angewandte Chemie.The article was published on 2007-05-04. It has received 253 citations till now. The article focuses on the topics: Diradical & Singlet state.read more
Citations
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Journal Article
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.
Journal ArticleDOI
Low band gap polycyclic hydrocarbons: from closed-shell near infrared dyes and semiconductors to open-shell radicals
TL;DR: In this review, a summary will be given on a series of low band gap polycyclic hydrocarbons about their synthesis, physical properties and material applications.
Journal ArticleDOI
Zethrenes, extended p-quinodimethanes, and periacenes with a singlet biradical ground state.
TL;DR: This Account discusses the chemistry and physics of three types of PHs with a significant singlet biradical character, primarily developed in this group, and finds that Clar's aromatic sextet rule, which is useful for the closed-shell PAHs, can also predict the relative biradicals character of benzenoid PH-based singletBiradicaloids.
Journal ArticleDOI
Diindeno-fusion of an anthracene as a design strategy for stable organic biradicals
Gabriel E. Rudebusch,José L. Zafra,Kjell Jorner,Kotaro Fukuda,Jonathan L. Marshall,Iratxe Arrechea-Marcos,Guzmán L. Espejo,Rocío Ponce Ortiz,Carlos J. Gómez-García,Lev N. Zakharov,Masayoshi Nakano,Henrik Ottosson,Juan Casado,Michael M. Haley +13 more
TL;DR: The synthesis and characterization of a molecule based on the diindeno[b,i]anthracene framework that exhibits pronounced open-shell character yet possesses remarkable stability is reported, demonstrating the rational design and synthesis of an air- and temperature-stable biradical compound.
Journal ArticleDOI
Diradical Character View of Singlet Fission
Takuya Minami,Masayoshi Nakano +1 more
TL;DR: The feasibility conditions of singlet fission on the excitation energy differences are revealed as functions of the multiple diradical characters yi [defined by the occupation numbers of the LUNO + i (i = 0, 1,...), where 0 ≤ yi ≤ 1 and yi ≥ yj (i > j)] using the linear H4 full configuration interaction model as discussed by the authors.
References
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Journal ArticleDOI
Two-Photon Laser Scanning Fluorescence Microscopy
TL;DR: The fluorescence emission increased quadratically with the excitation intensity so that fluorescence and photo-bleaching were confined to the vicinity of the focal plane as expected for cooperative two-photon excitation.
Journal ArticleDOI
Finer features for functional microdevices
TL;DR: Micromachines can be created with higher resolution using two-photon absorption, and the results can be higher resolution than previously reported using single photon absorption techniques.
Journal ArticleDOI
Design of Organic Molecules with Large Two-Photon Absorption Cross Sections
Marius A. Albota,David Beljonne,Jean-Luc Brédas,J. E. Ehrlich,Jia Ying Fu,Ahmed A. Heikal,Samuel E. Hess,Thierry Kogej,Michael D. Levin,Seth R. Marder,D. McCord-Maughon,Joseph W. Perry,H. Rockel,Mariacristina Rumi,Girija Subramaniam,Watt W. Webb,Xiang Li Wu,Chris Xu +17 more
TL;DR: The combination of large delta and high fluorescence quantum yield or triplet yield exhibited by molecules developed here offers potential for unprecedented brightness in two-photon fluorescent imaging or enhanced photosensitivity in two -photon sensitization, respectively.
Journal ArticleDOI
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpston,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,J. E. Ehrlich,L. Erskine,Ahmed A. Heikal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,Jinqui Qin,H. Rockel,Mariacristina Rumi,Xiang Li Wu,Seth R. Marder,Seth R. Marder,Joseph W. Perry,Joseph W. Perry +18 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive readout, and the fabrication of threedimensional micro-optical and micromechanical structures, including photonic bandgap-type structures.
Journal Article
Two-photon polymerization initiators for three-dimensional optical data storage and microfabrication
Brian H. Cumpoton,S. Ananthavel,Stephen Barlow,Daniel L. Dyer,Jeffrey E. Ehrilch,Lael L. Ersktne,Ahmed A. Helkal,Stephen M. Kuebler,I.-Y. Sandy Lee,D. McCord-Maughon,Jinqui Qin,H. Rockel,Mariacristina Rumi,X. L. Wu,Seth R. Marder,Joseph W. Perry +15 more
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.