Article
Biochemistry & Molecular Biology
Ainhoa Oliden-Sanchez, Enrique Alvarado-Martinez, Diana E. E. Ramirez-Ornelas, Miguel A. A. Vazquez, Edurne Avellanal-Zaballa, Jorge Banuelos, Eduardo Pena-Cabrera
Summary: In this study, a synthetic method for a new set of π-extended BODIPY derivatives was reported, which involved the selective functionalization of the meso-position and the halogenated sites using the Liebeskind-Srogl cross-coupling and Suzuki reactions. All these laser dyes exhibited absorption and emission bands in the red edge of the visible spectrum, with the thiophene-containing compounds showing the highest emission efficiency. The fluorescence and laser efficiency of the polyphenylBODIPYs could be further enhanced by decorating the peripheral phenyls with electron donor/acceptor groups. Surprisingly, the polythiopheneBODIPYs demonstrated excellent laser performance despite their charge transfer character. Thus, these BODIPY derivatives offer a palette of stable and bright laser sources covering the spectral range from 610 nm to 750 nm.
Article
Multidisciplinary Sciences
Jianyu Zhang, Parvej Alam, Siwei Zhang, Hanchen Shen, Lianrui Hu, Herman H. Y. Sung, Ian D. Williams, Jianwei Sun, Jacky W. Y. Lam, Haoke Zhang, Ben Zhong Tang
Summary: Researchers have designed clusteroluminogens that exhibit multiple emissions and white-light emission in the crystalline state by manipulating through-space interactions. The intensity ratio of these emissions can be easily controlled by changing the halide atom and excitation wavelength.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Joao V. P. Valverde, Andre G. Pelosi, Leandro H. Zucolotto Cocca, Orlando D. Marbello, Julie le Bescont, Chloe Breton-Patient, Sandrine Piguel, Daniel L. Silva, Leonardo De Boni, Cleber R. Mendonca
Summary: In this study, spectroscopic measurements were conducted on seven imidazo[1,2-a]pyridine derivatives with different peripheral groups to investigate their influence on the two-photon absorption (2PA) cross-section. The results revealed that introducing a naphthalene substituent led to an approximately seven-fold increase in the 2PA cross-section, indicating the effective enhancement of molecular conjugation. Similarly, when groups with strong electron withdrawing or donating characteristics were linked to the imidazo[1,2-a]pyridine core, the same outcome was observed. These findings suggest a potential approach to achieving significant nonlinear optical responses in this class of organic compounds.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Xi Liu, Yi Qin, Junlong Zhu, Xiaoli Zhao, Tanyu Cheng, Yanrong Jiang, Haitao Sun, Lin Xu
Summary: A series of TPA derivatives with different substituent groups were prepared and showed unique absorption and fluorescence characteristics due to the substituent effect. The presence of pyridine units in these derivatives enabled acid-induced tunable multicolor fluorescence emission, making them suitable for constructing stimuli-responsive fluorescent films and inks for inkjet printing.
CHINESE CHEMICAL LETTERS
(2021)
Article
Multidisciplinary Sciences
Ningning Tang, Jiadong Zhou, Liangxuan Wang, Matthias Stolte, Guojing Xie, Xinbo Wen, Linlin Liu, Frank Wuethner, Johannes Gierschner, Zengqi Xie
Summary: Nano-sized PBI dyes achieve deep-red emission and avoid common quenching pathways by tuning the dihedral angle between the aromatic and alkoxy groups.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Joao Felicidade, Fabio M. F. Santos, Jesus F. Arteaga, Patricia Remon, Rene Campos-Gonzalez, Ha-Chi Nguyen, Francisco Najera, Francisco Bosca, David Y. W. Ng, Pedro M. P. Gois, Uwe Pischel
Summary: A series of boronic-acid-derived salicylidenehydrazone (BASHY) complexes were synthesized in good yields through a versatile three-component reaction. These complexes exhibit fluorescence switching behavior by photoinduced electron transfer, which can be controlled by the addition of acid. In organic solvent, the fluorescence is observed in the green-to-orange region, while in water under physiological pH conditions, the fluorescence is observed in the red-to-NIR region with appreciable quantum yields and lifetimes. These characteristics make these dyes suitable for fluorescence lifetime imaging of live cells.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Alexander Schulz, Frank Wuerthner
Summary: This study demonstrated a significant fluorescence enhancement for a weakly fluorescent merocyanine dye by co facially stacking it with other dyes in heterofolda-trimer architectures. This enhancement was explained by the rigidification of the emitting chromophore in the foldamer architecture and the presence of a non forbidden lowest exciton state in H-coupled heteroaggregates, suggesting a promising strategy for improved fluorophores inspired by nature's green fluorescent protein (GFP).
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Gana Sanil, Maciej Krzeszewski, Wojciech Chaladaj, Witold Danikiewicz, Iryna Knysh, Lukasz Dobrzycki, Olga Staszewska-Krajewska, Michal K. Cyranski, Denis Jacquemin, Daniel T. Gryko
Summary: This study presents the tandem intramolecular hydroarylation of alkynes accompanied by a 1,2-aryl shift. By utilizing the unique electron-rich character of the 1,4-dihydropyrrolo[3,2-b]pyrrole scaffold, pi-expanded, centrosymmetric pyrrolo[3,2-b]pyrroles were synthesized by reacting alkynes at the already occupied positions 2 and 5. The reaction only proceeds in the presence of cationic gold catalyst and produces unknown compounds with six conjugated rings. These synthesized compounds have potential applications in the creation of new materials with various functionalities.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Rajendra Prasad Nandi, Chinna Ayya P. Swamy, Pandi Dhanalakshmi, Santosh Kumar Behera, Pakkirisamy Thilagar
Summary: The study focused on the dual emission characteristics of boryl-BODIPYs, where the ratio between two emission bands varied significantly depending on molecular conformations. The frustrated excited-state energy transfer from borane to BODIPY was identified as the cause of the dual emission features, which can be elegantly tuned by modulating the dihedral angle between these two moieties.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Leonardo Andreoni, Federica Cester Bonati, Jessica Groppi, Davide Balestri, Gianpiero Cera, Alberto Credi, Andrea Secchi, Serena Silvi
Summary: We synthesized and characterized [2]rotaxanes based on a stilbazolium dye and a calix[6]arene macrocycle. Due to the non-symmetry of both components, two orientational isomers were obtained. The two isomers exhibited distinct photophysical and photochemical properties in solution and solid state, surpassing the unencapsulated dye.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zheming Chen, Chenghu Dai, Wei Xiong, Yanke Che, Chuang Zhang
Summary: Organic microlaser sensors hold great promise for chemical vapor detection, but their stability issues hinder applications. A newly synthesized dye that self-assembles into microwires exhibits strong response to acid vapors and good stability.
COMMUNICATIONS CHEMISTRY
(2021)
Article
Chemistry, Organic
Takeo Nakano, Shigenori Fujikawa
Summary: A series of 2-(isoquinol-1-yl)pyrrole-boron complexes with (hetero)aryl substituents on the pyrrole and/or isoquinoline moiety were synthesized. These complexes exhibited fluorescence emission in both solution and solid state. The comprehensive optical characteristics of these complexes, including the emitting colors and intensity, were dependent on the type and position of the substituted aryl groups, as revealed by experimental and computational studies.
JOURNAL OF ORGANIC CHEMISTRY
(2022)
Article
Chemistry, Analytical
Chao Wang, Jiaxin Wang, Ke Xue, Minghui Xiao, Kaiyu Wu, Shuyi Lv, Boyi Hao, Chunlei Zhu
Summary: The article describes a novel polarity-sensitive probe, TICT-lipid, which can reflect the packing degree of bacterial membrane lipids. It also shows that TICT-lipid can undergo localization shift and enhanced fluorescence in the presence of membrane-disrupting antibiotics, providing a clear visualization of antibiotic action. This probe holds great promise in the study of membrane-related bacterial processes and antibiotic screening.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Inorganic & Nuclear
Patricia Bolle, Tarik Benali, Clotilde Menet, Marin Puget, Eric Faulques, Jerome Marrot, Pierre Mialane, Anne Dolbecq, Helene Serier-Brault, Olivier Oms, Remi Dessapt
Summary: A cationic boron dipyrromethene (BODIPY) derivative has been combined with polyoxometalates (POMs) to form new supramolecular fluorescent materials. The hybrid compounds exhibit modified fluorescence properties in the solid state due to the molecular arrangement driven by the negative charge density of the POM units. This self-assembly approach prevents unwanted interactions and results in different fluorescence behaviors in the three materials.
INORGANIC CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Fabien Ceugniet, Quentin Huaulme, Alexandra Sutter, Denis Jacquemin, Nicolas Leclerc, Gilles Ulrich
Summary: This article reports the synthesis and properties of heterosubstituted alpha beta-fused BODIPY fluorophores. The compounds were synthesized from 2,3,5,6-tetrahalo-BODIPY through sequential and selective Stille cross-coupling reactions, allowing the introduction of different substituents at specific positions on the BODIPY ring. The fully fused compounds showed a bathochromically shifted emission and a hyperchromic shift of the absorption maxima, with relatively high fluorescence quantum yields. Computational studies were conducted to gain a comprehensive understanding of the photophysical behavior of these dyes.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Yusuke Kofuji, Yuki Isobe, Yasuhiro Shiraishi, Hirokatsu Sakamoto, Satoshi Ichikawa, Shunsuke Tanaka, Takayuki Hirai
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Miyu Katayama, Masaki Hashimoto, Takayuki Hirai
CHEMICAL COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Jun Imai, Naoki Yasumoto, Hirokatsu Sakamoto, Shunsuke Tanaka, Satoshi Ichikawa, Takayuki Hirai
Article
Chemistry, Physical
Yasuhiro Shiraishi, Takahiro Takii, Takumi Hagi, Shinnosuke Mori, Yusuke Kofuji, Yasutaka Kitagawa, Shunsuke Tanaka, Satoshi Ichikawa, Takayuki Hirai
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Kiyomichi Chishiro, Shunsuke Tanaka, Takayuki Hirai
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Masaki Hashimoto, Kiyomichi Chishiro, Kenta Moriyama, Shunsuke Tanaka, Takayuki Hirai
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2020)
Article
Multidisciplinary Sciences
Yasuhiro Shiraishi, Yuki Ueda, Airu Soramoto, Satoshi Hinokuma, Takayuki Hirai
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Analytical
Yasuhiro Shiraishi, Rikako Nakatani, Shunsuke Takagi, Chiharu Yamada, Takayuki Hirai
Article
Chemistry, Physical
Yasuhiro Shiraishi, Chiharu Yamada, Shunsuke Takagi, Takayuki Hirai
Summary: A new naphthalimide-dicyanoisophorone conjugate has been synthesized for the detection of hypochlorous acid and hypochlorite, showing selective fluorescence enhancement and color fading. This chemodosimeter allows for rapid, selective, and sensitive detection of HClO/OCl- at concentrations as low as 1.3 μM under physiological conditions.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Masako Matsumoto, Satoshi Ichikawa, Shunsuke Tanaka, Takayuki Hirai
Summary: The study reports that RF resin powders doped with P3HT exhibit enhanced photocatalytic activities, leading to increased efficiency in H2O2 generation through enhanced charge separation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Shunsuke Takagi, Keiichiro Yomo, Takayuki Hirai
Summary: The study presents a new spiropyran dye that exhibits solvent-driven isomerization even with a hydroxynaphthalene moiety, demonstrating spontaneous isomerization in polar media. The strong stabilization of the MC forms by water molecules due to hydrogen bonding interactions triggers the spontaneous isomerization reaction between SP and MC forms.
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Takumi Hagi, Masako Matsumoto, Shunsuke Tanaka, Satoshi Ichikawa, Takayuki Hirai
COMMUNICATIONS CHEMISTRY
(2020)
Article
Nanoscience & Nanotechnology
Yasuhiro Shiraishi, Shota Toi, Satoshi Ichikawa, Takayuki Hirai
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Yasuhiro Shiraishi, Chiharu Yamada, Takayuki Hirai
Article
Chemistry, Physical
Yasuhiro Shiraishi, Shingo Shiota, Yusuke Kofuji, Masaki Hashimoto, Kiyomichi Chishiro, Hiroaki Hirakawa, Shunsuke Tanaka, Satoshi Ichikawa, Takayuki Hirai
ACS APPLIED ENERGY MATERIALS
(2018)
