bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quadruple Photoresponsive Functionality in a Crystalline Hybrid Material: Photochromism, Photomodulated Fluorescence, Magnetism and Nonlinear Optical Properties
Authors: Han Song‐De , Liu Ai‐u , Wei Qi , Hu Ji‐Xiang , Pan Jie , Wang Guo‐Ming 
Published: March 2021

AbstractAs promising photoresponsive materials and potential smart materials, hybrid photochromic materials (HPMs), especially for crystalline HPMs (CHPMs), have been broadly explored for their potential in inheriting the merits of each constituents, and intriguing photomodulated functionality. Hitherto, the photoresponsive functionality in explored CHPMs mainly concentrate on dyad combination. By contrast, triple or quadruple photoresponsive properties are very rare because of the limited compatibility of multiple photoresponsive functionality in a single system. In this work, the electron‐transfer (ET) and crystal engineering strategies were utilized to predesign CHPMs with multiple photoresponsive properties via the collaboration of paramagnetic metal ion (Dy3+), electron‐donor (ED) ligand (benzene‐1,2,3‐tricarboxylic acid, H3BTA) and electron‐acceptor (EA) ligand (1,10‐phenanthroline, phen). The resulting complex [Dy(BTA)(phen)2]⋅2H2O (1) shows hybrid chain with the intrachain Dy3+ ions bridged and chelated by tricarboxylate and phen ligands, respectively. After photostimuli, the ET between tricarboxylate and phen results in photogenerated radicals and the resultant quadruple photoresponsive properties. Considering the abundant resources of paramagnetic metal ions, ED‐ and EA‐ligands, this work provides a general method to construct CHPMs with multiple photoresponsive performances via the collaboration of each unit under the guidance of ET and crystal engineering strategies.
Intrinsic Molybdenum‐Based POMOFs with Impressive Gas Adsorptions and Photochromism
Authors: Deng Lan , Dong Xin , Zhou Zhao‐Hui 
Published: March 2021

AbstractNovel molybdenum(VI/V) POM‐based self‐constructed frameworks [MoVI12O24(μ2‐O)12(trz)6(H2O)6] ⋅ 6Hma ⋅ 18H2O (1, Htrz=1H‐1,2,3‐triazole, ma=methylamine), [MoVI7O14(μ2‐O)8(trz)5(H2O)] ⋅ 7Hma ⋅ 5H2O (2), Na3[MoV6O6(μ2‐O)9(Htrz)3(trz)3] ⋅ 7.5H2O (3) and [MoV8O8(μ2‐O)12(Htrz)8] ⋅ 30H2O (4) have been covalently decorated with tri‐coordinated deprotonated/protonated 1,2,3‐triazoles. Channels with an inner diameter of 7.5 Å were found in 1, whereas a tunnel composed of stacking molecules with an inner diameter of 4.1 Å along the b‐axis exists in 2; it is occupied by free disordered methylamines, showing selective adsorption of O2 and CO2 at 25 °C. Obvious downfield shifts were observed by 13C NMR spectroscopies for methylamines inside the confined channels in 1 and 2. There are diversified pores in 3 and 4, which are formed by the molecules themselves and intermolecular accumulations. Adsorption tests indicate that 3 and 4 are fine adsorption materials for CH4 and CO2 under low pressure that rely on the environments built by the POMs. Correspondingly, 1 and 2 display reversible photoresponsive thermochromism that is subtlety influenced by the channels. The polyoxometalate organic frameworks (POMOFs) with multiple functional adsorptions are easy to assemble. Their photo‐/thermoresponse properties offer a new pathway for the self‐constructions of one‐off hybrid materials that possess the good properties of both POMs and MOFs.
Solid‐State Near‐Infrared Circularly Polarized Luminescence from Chiral YbIII‐Single‐Molecule Magnet
Authors: Lefeuvre Bertrand , Mattei Carlo Andrea , Gonzalez Jessica Flores , Gendron Frédéric , Dorcet Vincent , Riobé François , Lalli Claudia , Le Guennic Boris , Cador Olivier , Maury Olivier , Guy Stéphan , Bensalah‐Ledoux Amina , Baguenard Bruno , Pointillart Fabrice 
Published: March 2021

AbstractA field‐induced chiral YbIII Single‐Molecule Magnet (SMM) displayed an unprecedented near‐infrared circularly polarized luminescence (NIR‐CPL) in the solid‐state. The bridging bis(1,10‐phenantro[5,6b])tetrathiafulvalene triad (L) allowed an efficient sensitization of the NIR 2F5/2→2F7/2 emission while the NIR‐CPL is associated to the f‐f transitions of the YbIII ion bearing chiral β‐diketonate derived‐camphorate ancillary ligands.
Room‐Temperature Phosphorescence Emitters Exhibiting Red to Near‐Infrared Emission Derived from Intermolecular Charge‐Transfer Triplet States of Naphthalenediimide−Halobenzoate Triad Molecules
Authors: Ono Toshikazu , Kimura Kazuki , Ihara Megumi , Yamanaka Yuri , Sasaki Miori , Mori Hirotoshi , Hisaeda Yoshio 
Published: March 2021

AbstractRoom‐temperature phosphorescence (RTP) emitters have attracted significant attention. However, purely organic RTP emitters in red to near‐infrared region have not been properly investigated. In this study, a series of naphthalenediimide−halobenzoate‐linked molecules are synthesized, one of which exhibits efficient RTP properties, showing red to near‐infrared emission in solid and aqueous dispersion. Spectroscopic studies and single‐crystal X‐ray diffraction analysis have shown that the difference in the stacking modes of compounds affects the optical properties, and the formation of intermolecular charge‐transfer complexes of naphthalenediimide−halobenzoate moiety results in a bathochromic shift of absorption and RTP properties. The time‐dependent density functional theory calculations showed that the formation of charge‐transfer triplet states and the external heavy atom effect of the halogen atom enhance the intersystem crossing between excited singlet and triplet states.
Divergent Syntheses of Pyridoacridine Alkaloids viaPalladium‐Catalyzed Reductive Cyclization with Nitro‐Biarenes
Authors: Liu Bo , Wang Shuping , Bian Changhao , Liao Hongze , Lin Hou‐Wen 
Published: March 2021

Main observation and conclusionA divergent and novel protocol for the preparation of both pyrido[2,3,4‐kl]acridine and pyrido[4,3,2‐kl]acridine alkaloids was developed. This method featured the remote palladium‐catalyzed reductive cyclization with Mo(CO)6 as reductant. A wide range of substrates including three types of nitro arenes were tolerated and afforded corresponding products in good to excellent yields. This method has been successfully applied to the total synthesis of norsegoline, styelsamine C and the skeleton of necatorone.
Identification of distinct phenotypic clusters in heart failure with preserved ejection fraction
Authors: Uijl Alicia , Savarese Gianluigi , Vaartjes Ilonca , Dahlström Ulf , Brugts Jasper J. , Linssen Gerard C.M. , van Empel Vanessa , Brunner‐La Rocca Hans‐Peter , Asselbergs Folkert W. , Lund Lars H. , Hoes Arno W. , Koudstaal Stefan 
Published: March 2021

AimsWe aimed to derive and validate clinically useful clusters of patients with heart failure with preserved ejection fraction (HFpEF; left ventricular ejection fraction ≥50%).Methods and resultsWe derived a cluster model from 6909 HFpEF patients from the Swedish Heart Failure Registry (SwedeHF) and externally validated this in 2153 patients from the Chronic Heart Failure ESC‐guideline based Cardiology practice Quality project (CHECK‐HF) registry. In SwedeHF, the median age was 80 [interquartile range 72–86] years, 52% of patients were female and most frequent comorbidities were hypertension (82%), atrial fibrillation (68%), and ischaemic heart disease (48%). Latent class analysis identified five distinct clusters: cluster 1 (10% of patients) were young patients with a low comorbidity burden and the highest proportion of implantable devices; cluster 2 (30%) patients had atrial fibrillation, hypertension without diabetes; cluster 3 (25%) patients were the oldest with many cardiovascular comorbidities and hypertension; cluster 4 (15%) patients had obesity, diabetes and hypertension; and cluster 5 (20%) patients were older with ischaemic heart disease, hypertension and renal failure and were most frequently prescribed diuretics. The clusters were reproduced in the CHECK‐HF cohort. Patients in cluster 1 had the best prognosis, while patients in clusters 3 and 5 had the worst age‐ and sex‐adjusted prognosis.ConclusionsFive distinct clusters of HFpEF patients were identified that differed in clinical characteristics, heart failure drug therapy and prognosis. These results confirm the heterogeneity of HFpEF and form a basis for tailoring trial design to individualized drug therapy in HFpEF patients.
A Blue Zinc Complex of a Dioxobilin‐Type Pink Chlorophyll Catabolite Exhibiting Bright Chelation‐Enhanced Red Fluorescence
Authors: Li Chengjie , Podewitz Maren , Kräutler Bernhard 
Published: March 2021

AbstractIn senescent fall leaves and in ripening fruit, colorless phyllobilins (PBs) accumulate from breakdown of chlorophyll, from which yellow PBs (phylloxanthobilins) and pink colored PBs (phylloroseobilins) arise in some leaves. The first described PBs were formyloxobilin‐type PBs, but dioxobilin‐type PBs also occur naturally. Here we report the synthesis and characterization of the blue Zn(II) complex of a dioxobilin‐type pink PB, which chelates a Zn(II) ion fast and tightly in an effectively tridentate manner. The optically active Zn complex featured bright chelation enhanced red fluorescence and exhibited strikingly differing spectral properties in methanol and in acetonitrile. Computational studies based on DFT‐calculations gave detailed insights into low energy structures of the Zn complex in both solvents and provided support for the proposed role of solvent in the coordination sphere of the bound Zn(II) ion.
Donor‐Acceptor‐Donor Thienopyrazine‐Based Dyes as NIR‐Emitting AIEgens
Authors: Goti Giulio , Calamante Massimo , Coppola Carmen , Dessì Alessio , Franchi Daniele , Mordini Alessandro , Sinicropi Adalgisa , Zani Lorenzo , Reginato Gianna 
Published: March 2021

AbstractOrganic Near‐Infrared luminophores have found broad application as functional materials, but the development of efficient NIR emitters is still a challenging goal. Here we report on a new class of thieno[3,4‐b]pyrazine‐based NIR emitting materials with Aggregation Induced Emission (AIE) properties. The dyes feature a donor–acceptor–donor (D−A−D) structure, with a thienopyrazine acceptor core connected to two triarylamine donor groups bearing a tetraphenylethylene (TPE) moiety. Fast and efficient synthesis allowed the modular preparation of three dyes of tunable absorption and emission profiles. These constructs were extensively characterized by spectroscopic studies in different solvents, which revealed intense light‐harvesting ability and emissions in the deep‐red and NIR region with large Stokes shift values. Remarkably, the dyes exhibited AIE properties, retaining emissive ability in the aggregate state, thus emerging as attractive materials for their potential application in the development of luminescent devices.
The Cross‐Dehydrogenative Coupling Reaction of β‐Ketoesters with Quinoxalin‐2(1H)‐ones
Authors: Zhang Hong‐Yu , Yang Zibing , Zhang Huizhen , Han Ya‐Ping , Zhao Jiquan , Zhang Yuecheng 
Published: March 2021

AbstractThe cross‐dehydrogenative coupling (CDC) reaction of β‐ketoesters with quinoxalin‐2(1H)‐one derivatives has been successfully performed by using a readily available Cu salt as the catalyst in moderate to excellent yields under mild conditions. Owing to the characteristic of handy operation and good functional group tolerance, this protocol affords a convenient access to α‐quinoxalinone‐substituted β‐ketoesters. Preliminary mechanistic investigations show this transformation possibly underwent an unusual ionic pathway.
Multifunctional CNT:TiO2 additives in spiro‐OMeTAD layer for highly efficient and stable perovskite solar cells
Authors: Lou Qiang , Li Huilin , Huang Qingsong , Shen Zhitao , Li Fumin , Du Qing , Jin Mengqi , Chen Chong 
Published: March 2021

AbstractHole transport layer (HTL) is very important for the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). As current state‐of‐the‐art HTL, Li‐TFSI doped spiro‐OMeTAD often suffers low conductivity and the hydrolysis of the additive Li‐TFSI, which significantly hinders the further improvement of PCE of PSCs. Besides, conventional spiro‐OMeTAD has no functional of directly passivating the perovskite crystal defects. Herein, multifunctional TiO2 nanoparticles (NPs)‐modified CNT (CNT:TiO2) doped spiro‐OMeTAD (spiro‐OMeTAD+CNT:TiO2) HTL is reported for the first time. The incorporated CNT:TiO2 not only significantly increases the conductivity of spiro‐OMeTAD+CNT:TiO2, but also effectively passivates the crystal defects of perovskite layer. The optimized PSCs with spiro‐OMeTAD+CNT:TiO2 HTL achieved a peak PCE of 21.53%, much higher than that (17.90%) of the conventional spiro‐OMeTAD based PSCs and also show significantly improved stability.image
The Story of Aya: Penaealogy, Black Women's Kinship, and the Carceral State
Authors: Richards‐Calathes Whitney 
Published: March 2021

ABSTRACTThis article sits at the intersection of Black feminist critical criminology and feminist ethnography. Based on ethnographic research and in‐depth interviews with lineages of system‐impacted Black women in Los Angeles (grandmothers, mothers, and daughters), this work introduces the term penaealogy. Penaealogy is a methodological and theoretical tool to unearth penal genealogies. It is a bricolage term to map how carceral histories and institutions splice their way into the strong, tender, and sinuous threads of Black women's kinship; a quadra‐directional lens that investigates the structural, the interpersonal, the past, and the future. Through the exploration of this concept, the paper interrogates how punishment systems impact Black women's kin and specifically Black daughterhood, while also discussing methodological intimacy and Black feminist criminology.
Cite Black Women: A Critical Praxis (A Statement)
Authors: Smith Christen A. , Williams Erica L. , Wadud Imani A. , Pirtle Whitney N. L. ,   The Cite Black Women Collective
Published: March 2021

AbstractThis collective statement provides a general overview of the Cite Black Women movement, its principles, intellectual genealogy, charge, and history. It is both a reflection and an outline of the project's primary principles, hopes, and dreams.
Characterization of volatile compounds of Pixian Douban fermented in closed system of gradient steady‐state temperature field
Authors: Ding Wenwu , Liu Yan , Zhao Xiaoyan , Peng Changbo , Ye Xiaoqing , Che Zhenming , Liu Yi , Liu Ping , Lin Hongbin , Huang Jiaquan , Xu Min 
Published: March 2021

AbstractAs an essential flavor condiment in Sichuan cuisine, Pixian Douban (PXDB) is usually produced by open fermentation process in strip pools or ceramic vats. In this study, an experiment of PXDB fermentation was conducted for 90 days in a closed system of gradient steady‐state temperature field (GSTF). To investigate the characterization of volatile compounds of PXDB in the closed system, the volatiles in three kinds of samples including samples of GSTF (SGT), samples of constant temperature (SCT), and samples of traditional fermentation (STF) were analyzed. The results showed that 75, 67, and 68 volatile compounds were detected in SGT, SCT, and STF, respectively. Compared with the traditional fermentation, the process in the closed system of GSTF was conducive to produce more kinds of esters and alcohols. A total of 22 major aroma active compounds were identified in three samples by combination analyses of gas chromatography‐olfactometry (GC‐O) and odor activity value (OAV). The appearance, smell, texture, and taste of the three different samples had shown different changes, but the sensory characteristics of the SGT were more similar to those of the STF by quantitative descriptive analysis (QDA) and principal component analysis (PCA). This study indicated that the closed system of GSTF could be applied in PXDB fermentation to obtain higher quality products, which brought a bright prospect of replacing the traditional fermentation process to realize the controllable industrialized production of PXDB.
The link between plant‐based diet indices with biochemical markers of bone turn over, inflammation, and insulin in Iranian older adults
Authors: Shahinfar Hossein , Amini Mohammad Reza , Payandeh Nastaran , Naghshi Sina , Sheikhhossein Fatemeh , Djafarian Kurosh , Shab‐Bidar Sakineh 
Published: March 2021

AbstractBackgroundThe association of plant‐based diets and biomarkers of bone, insulin, and inflammation is still unclear.ObjectivesWe investigated the associations between biomarkers of bone, insulin, and inflammation and three plant‐based diet indices: an overall plant‐based diet index (PDI); a healthy plant‐based diet index (hPDI); and an unhealthy plant‐based diet index (uPDI).MethodsWe included 178 elderly subjects who referred to health centers in Tehran. Blood and urine samples were collected to measure osteocalcin. The Human C‐telopeptide of type Ⅰ collagen (u‐CTX‐I), highly sensitive C‐reactive protein (hs‐CRP), parathyroid hormone (PTH), 25(OH) D, and insulin resistance and sensitivity. We created an overall PDI, hPDI, and uPDI from semi‐quantitative food frequency questionnaire (FFQ) data.ResultsDietary groups of Vegetables (r = .15, p = .03), nuts (r = .16, p = .03), dairy (r = .25, p = .001), eggs (r = .27, p < .001), red meat, and animal products (r = .25, p = .001) were directly correlated with osteocalcin. Refined grains were also had a positive association with serum insulin concentration (r = .14, p = .04). PTH levels are inversely associated with PDI score (β = −0.18, p = .01). Also, serum insulin concentration was negatively associated with PDI score (β = −0.10, p = .04). Urine CTX‐1 levels were significantly associated with hPDI score (β = −0.06, p = .04). u‐CTX‐1 levels are inversely associated with uPDI score. This significance did not change with the adjustment of the confounders (β = −0.28, p < .001).ConclusionsMore adherence to PDI and hPDI and less in uPDI may have a beneficial effect on biomarkers of bone, inflammation, and insulin thus preserving chronic diseases.
Neural correlates of the impulse dyscontrol domain of mild behavioral impairment
Authors: Gill Sascha , Wang Meng , Mouches Pauline , Rajashekar Deepthi , Sajobi Tolulope , MacMaster Frank P , Smith Eric E , Forkert Nils D , Ismail Zahinoor ,   for the Alzheimer's Disease Neuroimaging Initiative
Published: March 2021

AbstractObjectivesAgitation and aggression are common in dementia and pre‐dementia. The dementia risk syndrome mild behavioral impairment (MBI) includes these symptoms in the impulse dyscontrol domain. However, the neural circuitry associated with impulse dyscontrol in neurodegenerative disease is not well understood. The objective of this work was to investigate if regional micro‐ and macro‐structural brain properties were associated with impulse dyscontrol symptoms in older adults with normal cognition, mild cognitive impairment, and Alzheimer's disease (AD).MethodsClinical, neuropsychiatric, and T1‐weighted and diffusion‐tensor magnetic resonance imaging (DTI) data from 80 individuals with and 123 individuals without impulse dyscontrol were obtained from the AD Neuroimaging Initiative. Linear mixed effect models were used to assess if impulse dyscontrol was related to regional DTI and volumetric parameters.ResultsImpulse dyscontrol was present in 17% of participants with NC, 43% with MCI, and 66% with AD. Impulse dyscontrol was associated with: (1) lower fractional anisotropy (FA), and greater mean, axial, and radial diffusivity in the fornix; (2) lesser FA and greater radial diffusivity in the superior fronto‐occipital fasciculus; (3) greater axial diffusivity in the cingulum; (4) greater axial and radial diffusivity in the uncinate fasciculus; (5) gray matter atrophy, specifically, lower cortical thickness in the parahippocampal gyrus.ConclusionOur findings provide evidence that well‐established atrophy patterns of AD are prominent in the presence of impulse dyscontrol, even when disease status is controlled for, and possibly in advance of dementia. Our findings support the growing evidence for impulse dyscontrol symptoms as an early manifestation of AD.
Contemporary management of the neck in nasopharyngeal carcinoma
Authors: Ng Wai Tong , Tsang Raymond K. Y. , Beitler Jonathan J. , de Bree Remco , Coca‐Pelaz Andrés , Eisbruch Avraham , Guntinas‐Lichius Orlando , Lee Anne W. M. , Mäkitie Antti A. , Mendenhall William M. , Nuyts Sandra , Rinaldo Alessandra , Robbins K. Thomas , Rodrigo Juan P. , Silver Carl E. , Simo Ricard , Smee Robert , Strojan Primož , Takes Robert P. , Ferlito Alfio 
Published: March 2021

AbstractUp to 85% of the patients with nasopharyngeal carcinoma present with regional nodal metastasis. Although excellent nodal control is achieved with radiotherapy, a thorough understanding of the current TNM staging criteria and pattern of nodal spread is essential to optimize target delineation and minimize unnecessary irradiation to adjacent normal tissue. Selective nodal irradiation with sparing of the lower neck and submandibular region according to individual nodal risk is now emerging as the preferred treatment option. There has also been continual refinement in staging classification by incorporating relevant adverse nodal features. As for the uncommon occurrence of recurrent nodal metastasis after radiotherapy, surgery remains the standard of care.
A rare presentation of chronic ovarian ectopic pregnancy: A case report
Authors: Fessehaye Abraham , Gudu Wondimu , Gashawbeza Biruck 
Published: March 2021

SynopsisA 25‐year‐old para 1, abortion 1 patient underwent left oophorectomy for chronic ovarian ectopic pregnancy, which was confirmed both intra‐operatively and by histopathologic examination.
COVID‐19‐related psychiatric impact on Italian adolescent population: A cross‐sectional cohort study
Authors: Mensi Martina M. , Capone Luca , Rogantini Chiara , Orlandi Marika , Ballante Elena , Borgatti Renato 
Published: March 2021

AbstractWe investigated the prevalence rate and sociodemographic correlates of COVID‐19‐related posttraumatic stress disorder (PTSD), and COVID‐19‐related acute stress disorder (ASD) among Italian adolescents, their level of stress, perception of parental stress, and connection with mental health. Adolescents aged 12–18 years compiled an online questionnaire designed through validated diagnostic instruments. We enrolled 1262 adolescents who declared that they had not experienced any previous traumatic events. Participants were divided into two groups: 118 adolescents with psychiatric problems (APP+) and 1144 without (APP−). In total, 79.52% reported isolated COVID‐19‐related ASD (29.48%) or PTSD symptoms (50.04%). One adolescent met the diagnosis of COVID‐19‐related ASD and two met the diagnosis of COVID‐19‐related PTSD, according to DSM‐5. Adolescents with subthreshold COVID‐19‐related ASD and PTSD symptoms referred the highest levels of personal stress and adolescents with psychiatric/psychological conditions experienced higher stress. Health measures should be urgently employed prioritizing psychosocial stressors among adolescent population.