Article
Chemistry, Multidisciplinary
Andrew T. Turley, Promeet K. Saha, Andrew Danos, Aisha N. Bismillah, Andrew P. Monkman, Dmitry S. Yufit, Basile F. E. Curchod, Marc K. Etherington, Paul R. McGonigal
Summary: This study investigates the relationship between solid-state luminescence and photocyclization of oligoaryl alkene chromophores by modulating the conjugation length. It is found that the emission of heptaaryl cycloheptatriene is turned off upon breaking the conjugation, but extended polycyclic frameworks can be formed. This method can be used to manipulate emission properties and selectively cyclize aromatic compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Jianyu Zhang, Lianrui Hu, Kaihua Zhang, Junkai Liu, Xingguang Li, Haoran Wang, Zhaoyu Wang, Herman H. Y. Sung, Ian D. Williams, Zebing Zeng, Jacky W. Y. Lam, Haoke Zhang, Ben Zhong Tang
Summary: Experimental and theoretical studies show that introducing electron-donating groups into triphenylmethane (TPM) can enhance the efficiency of clusteroluminescence, while introducing electron-withdrawing groups may result in quenched clusteroluminescence.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Junjuan Shi, Wei Xu, Hao Yu, Xing Wang, Feng Jin, Qingming Zhang, Houyu Zhang, Qiming Peng, Alim Abdurahman, Ming Wang
Summary: Luminescent metal-radicals have gained attention for their potential applications in materials science. However, the luminescence of metal-radicals tends to decrease after forming metallo-complexes. This study presents a highly luminescent metallo-supramolecular radical cage (LMRC) constructed from a tritopic terpyridinyl ligand RL with a TTM radical and Zn2+. LMRC shows a remarkable photoluminescence quantum yield and high photostability. Additionally, LMRC exhibits significant magnetoluminescence at high concentrations, indicating negligible spin-spin interactions between radical centers.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Zihao Zhao, Huili Ma, Saixing Tang, Yuxuan Li, Siyu Tao, Tianjia Yang, Anqi Lv, Wang Zhang Yuan
Summary: Halogen bonds play a bridging role among luminophores and can also exhibit dual emission. The discovery of emissive halogen clusters provides new possibilities for exploring nonconventional luminophores involving halogen moieties.
CELL REPORTS PHYSICAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Mingchen Xie, Jia-Heng Cai, Guangyu Zhang, Sinyeong Jung, Dongfang Dong, Zhao-Yang Zhang, Dong-Ying Zhou, Liang-Sheng Liao, Tao Li
Summary: Kasha’s rule is often followed by luminous emitters, but little effort has been made to suppress and utilize it for variable emission. This paper explores the suppression of Kasha’s rule through the vertical molecule configuration, resulting in dual emission in the solution state. However, when the molecule is doped into rigid matrixes, Kasha’s rule is utilized and NIR-only emission is observed.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Polymer Science
Ting Han, Lijie Liu, Dong Wang, Jinglei Yang, Ben Zhong Tang
Summary: MFP systems use sensitive fluorescent motifs to detect polymer chain events under mechanical stimuli, utilizing the aggregation-induced emission (AIE) effect to self-report their mechanical states and changes. Design principles include physically doping AIE luminogens into polymer matrix, chemically linking AIEgens in polymer backbones, and utilizing clusterization-triggered emission in polymers with nonconventional luminogens. The article discusses recent progress enabled by AIE process and addresses existing challenges in the field for future development.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Hui Liu, Ziqing Hu, Hanwei Zhang, Qingyun Li, Kai Lou, Xiaofan Ji
Summary: This study establishes a relationship between fluorescence properties and molecular weight, allowing for the visual differentiation of supramolecular polymer molecular weight. It is also discovered that fluorescence color can be regulated by introducing a competitive molecule.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
De-Shan Li, Yu-Jing Sheng, Liang-Tao Wu, Yu-Jiao Chen, Hang Xiao, Xiao-Li Sun, Hongli Bao, Wen-Ming Wan
Summary: Although the Barbier reaction is generally considered as a one-pot Grignard reaction, this study demonstrates that the Barbier reaction of cinnamaldehyde yields a macromolecule with interesting aggregation-induced emission properties, indicating that it cannot be regarded as a one-pot Grignard reaction.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
Pan-Pan Dong, Yuan-Yuan Liu, Qiu-Chen Peng, Hai-Yang Li, Kai Li, Shuang-Quan Zang, Ben Zhong Tang
Summary: In this work, a series of butterfly-like isomers named oxacalix[2]naphthalene[2]pyrazine (ONP) were synthesized conveniently by a one-step catalyst-free reaction, showing typical characteristics of aggregation-induced emission (AIE). The AIE properties of ONP can be attributed to the restriction of intramolecular vibration (RIV). The coordination ability of ONP molecules with pyrazine groups makes them ideal ligands for constructing luminescent metal-organic frameworks (MOFs), and different ONP isomers have different binding capacities.
DALTON TRANSACTIONS
(2023)
Review
Chemistry, Multidisciplinary
Suguru Ito
Summary: Mechanoresponsive luminescent organic crystals have attracted increasing interest due to their potential applications. Recent progress has been made in understanding the relationship between crystal structure and mechanoresponsive properties, leading to the development of polymorphic organic crystals with multicolor emission and multistimuli-responsive switching of fluorescence. This research is expected to guide the prediction and creation of organic crystals with desired photophysical and mechanical properties.
Article
Chemistry, Multidisciplinary
Xiao Ma, Mingyue Zhou, Ling Jia, Guangkun Ling, Jiashu Li, Wei Huang, Dayu Wu
Summary: This study developed a series of high-efficiency multiple color-tunable luminescent ionic polymers by grafting charged multi-color AIEgen-based chromophores into polymers. These polymers can achieve high-contrast reversible multiple color-tunable emission in response to solvent stimuli and excitation-dependent color-tunable emission. The results show great promise for applications in dynamic multilevel anti-counterfeiting.
MATERIALS HORIZONS
(2023)
Review
Chemistry, Multidisciplinary
Yuxuan Song, Guocui Pan, Chenchen Zhang, Can Wang, Bin Xu, Wenjing Tian
Summary: Solid-state luminescence of organic & pi;-conjugated molecules has attracted considerable attention as an international forefront research area. The interactions between transition dipoles of adjacent molecules are found to be closely associated with the optical properties in the aggregate state. Therefore, by manipulating the intermolecular interactions and stacking modes, the luminescent properties of organic crystals can be efficiently modulated. This review presents recent studies on the molecular packing structures and optical properties in & pi;-conjugated organic luminescent crystals, as well as their applications in stimuli response, amplified spontaneous emission, and organic solid-state lasers. Furthermore, the development and future prospects of this research field are discussed, providing insights for the specific design of organic luminescent molecules with desired optoelectronic properties in the aggregate states.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Polymer Science
Timo Sehn, Birgit Huber, Julian Fanelli, Hatice Mutlu
Summary: A novel polymerization methodology using 1,1'-carbonyldiimidazole (CDI) is presented, which offers a wider synthetic window for less-recognized polydithiocarbonates.
Review
Polymer Science
Girishma Grover, Richard G. Weiss
Summary: This review article provides an overview of important conceptual and practical aspects related to the design and properties of molecular luminescent gelators and their gels. Topics covered include structural and dynamic aspects of the gels, as well as factors that influence their ability to emit radiation from electronically excited states.
Article
Chemistry, Multidisciplinary
Xin Li, Wenlang Li, Xinyue Liu, Minjie Zhang, Eric Y. Yu, Anthony W. K. Law, Xinwen Ou, Jianyu Zhang, Herman H. Y. Sung, Xuefeng Tan, Jianwei Sun, Jacky W. Y. Lam, Zhihong Guo, Ben Zhong Tang
Summary: This study discovered a new photo-activatable luminescent motif and demonstrated its potential applications in both small molecules and macromolecules. The research also highlighted the importance of effective intramolecular motion in the distinct luminescence performance. Furthermore, the study achieved the synthesis of polymers containing the motif and realized multiple types of photo-patterning. This work has significant implications for the future design of photo-activatable luminescent materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Polymer Science
Andrea Fausto Bertozzi, Alberto Picchi, Andrea Pucci
Summary: This study uses waterborne acrylic resin as a polymer matrix for thin-film luminescent solar concentrators and a water dispersable lanthanide complex as the red-emitting pigment. The thin polymer films show good absorption and emission properties, indicating the potential of waterborne polymer matrices for high-performance and water-based solar collectors.
MACROMOLECULAR CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Sharon Monaci, Andrea Pucci, Francesco Picchioni, Fedrerique A. Versteeg, Giacomo Ruggeri
Summary: This study proposes a new plastic coating made of low-density polyethylene (PE) films with combined organic and inorganic near-infrared (NIR) reflective additives, which can lower the temperature of buildings and reduce the consumption of electrical energy for air conditioning. The research found that the use of specific pigments in black-tinted coatings significantly increased the total solar reflectance (TSR), resulting in a cooler PE film under solar radiation.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Article
Biochemistry & Molecular Biology
Somayyeh Rakhshani, Rodolfo Araneo, Andrea Pucci, Antonio Rinaldi, Chiara Giuliani, Alfonso Pozio
Summary: Anion exchange membranes (AEM) are gaining attention as a low-cost solution for water electrolysis to produce hydrogen, providing a sustainable alternative to fossil fuels. This article presents the development of a composite AEM by activating a commercial support structure (Celgard (R) 3401) with a commercially available functional group (Fumion (R) FAA-3) through a phase-inversion process. The results demonstrate the effectiveness of the phase-inversion procedure through FTIR and SEM analysis. The performance test of the membrane showed promising results, surpassing a commonly used commercial membrane in alkaline electrolysis (Fumasep), and a testing procedure for membrane performance evaluation during electrolysis was developed.
Article
Materials Science, Multidisciplinary
Cosimo Micheletti, Valentina Antonia Dini, Marco Carlotti, Francesco Fuso, Damiano Genovese, Nelsi Zaccheroni, Chiara Gualandi, Andrea Pucci
Summary: A straightforward method for preparing mechanochromic polymers involves incorporating a suitable content of a mechanophore in the polymeric matrix either by physical dispersion or via covalent functionalization. In this study, a thermoplastic elastomer was covalently functionalized with a chromogenic unit and showed a detectable and reversible mechanochromic response starting from 50% strain.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Chemistry, Organic
Costanza Papucci, Francesco Ventura, Daniele Franchi, Alessio Dessi, Andrea Pucci, Gianna Reginato, Alessandro Mordini, Massimo Calamante, Lorenzo Zani
Summary: A straightforward synthetic protocol featuring direct C-H arylations was optimized to prepare two benzo-2,1,3-thiadiazole (BTD)-based organic fluorophores. These fluorophores showed suitable light absorption and emission properties, as well as affinity with poly(methyl methacrylate) as the chosen polymer matrix, for application in luminescent solar concentrators. Solar-concentration devices were fabricated using both emitters, and their optical and photovoltaic properties were presented.
Article
Polymer Science
Ottavia Racchi, Rebecca Baldassari, Esteban Araya-Hermosilla, Virgilio Mattoli, Pierpaolo Minei, Alfonso Pozio, Andrea Pucci
Summary: In this study, efficient anion-exchange membranes (AEMs) were prepared by functionalizing an aliphatic polyketone with 1-(3-aminopropyl)imidazole through the Paal-Knorr reaction. The derived membranes showed good thermal stability, mechanical properties, and comparable ionic conductivity to a commercially available AEM. Future efforts will focus on increasing the robustness of these membranes to meet the requirements for electrolytic cell applications.
Article
Chemistry, Physical
Matteo Bartolini, Cosimo Micheletti, Alberto Picchi, Carmen Coppola, Adalgisa Sinicropi, Mariangela Di Donato, Paolo Foggi, Alessandro Mordini, Gianna Reginato, Andrea Pucci, Lorenzo Zani, Massimo Calamante
Summary: Luminescent solar concentrators (LSCs) are optical devices that can collect, downshift, and concentrate sunlight using emitting materials embedded in a polymer matrix. Combining LSCs with silicon-based photovoltaic (PV) devices is a proposed strategy to enhance their ability to harvest diffuse light and integrate them into built environments. The performance of LSCs can be improved by utilizing organic fluorophores with strong light absorption and redshifted emission.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Polymer Science
Alberto Picchi, Qinfan Wang, Francesco Ventura, Cosimo Micheletti, Jesse Heijkoop, Francesco Picchioni, Ilaria Ciofini, Carlo Adamo, Andrea Pucci
Summary: We propose a novel TPE fluorophore (TPE-BPAN) with aggregation-induced emission (AIE) behavior for effective use in polymer films. Different polymer matrices with varying polarity were used to study the effect on TPE-BPAN emission. The less polar comonomer CHMA enhanced the emission, while lower polymer polarity resulted in decreased quantum yield and film stability.
Article
Chemistry, Multidisciplinary
Valentina A. Dini, Damiano Genovese, Cosimo Micheletti, Nelsi Zaccheroni, Andrea Pucci, Chiara Gualandi
Summary: Aggregation-induced emission (AIE) luminogens are used to study polymer properties related to chain mobility and free volume. However, the commonly used assumption that emission intensity is directly correlated to photoluminescence quantum yield (PLQY) is proved invalid under certain conditions. Changes in polymer matrix transparency and scattering effects can affect the apparent emission intensity, while fluorescence lifetime measurements provide a more accurate assessment of the modifications in the photophysical properties of AIE dyes.
Article
Chemistry, Physical
Matteo Bartolini, Cosimo Micheletti, Alberto Picchi, Carmen Coppola, Adalgisa Sinicropi, Mariangela Di Donato, Paolo Foggi, Alessandro Mordini, Gianna Reginato, Andrea Pucci, Lorenzo Zani, Massimo Calamante
Summary: Luminescent solar concentrators (LSCs) are optical devices that use emitting materials embedded in a polymer matrix to harvest, downshift, and concentrate sunlight for improved integration with photovoltaic devices. In this study, a series of orange/red organic emitters were designed, synthesized, and characterized for use in LSCs. The compounds exhibited strong intramolecular charge-transfer states, with symmetric structures and moderate strength donor groups showing better photophysical properties for LSC applications. The best LSC built with these compounds demonstrated high photonic and PV performances, close to the state-of-the-art, along with sufficient stability in accelerated aging tests.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Oliver G. Willis, Andrea Pucci, Enrico Cavalli, Francesco Zinna, Lorenzo Di Bari
Summary: Efficient near-infrared circularly polarised luminescence (CPL) between 1400 and 1600 nm has been successfully measured for four enantiomer pairs of homo- and heteroleptic complexes. Using inexpensive optics and a commercial fluorimeter, discrimination of left and right circularly polarised components was achieved, resulting in remarkably high dissymmetry values in emission (g(lum)). Of particular note, the homoleptic complex CsEr(hfbc)(4) and [TMG-H+](3)Er(BINOLate)(3) exhibited maximal |g(lum)| values of 0.83 (at 1510 nm) and 0.29 (at 1545 nm) respectively, with the former complex having the strongest CPL within the NIR to date.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Polymer Science
Elisa Della Latta, Francesca Sabatini, Cosimo Micheletti, Marco Carlotti, Francesca Martini, Francesca Nardelli, Antonella Battisti, Ilaria Degano, Marco Geppi, Andrea Pucci, Svenja Pohl, Guido Kickelbick
Summary: In this study, flexible luminescent solar concentrators (LSCs) with a size of 5 x 5 cm(2) were prepared by integrating a reactive perylene bisimide fluorophore (FC546) into a polysiloxane network. The LSCs exhibited higher thermal and light stability, as well as superior device efficiency, compared to other similar-sized flexible LSC systems.
