bluuebunny/crossref_metadata_2025_split huggingface dataset:
OWNERSHIP IN THE QUR’AN (A Thematic Study of Qur’anic Verses)
Authors: Shofiyah Faridatus 
Published: June 2023

Qur’an as the source of guidance assists human beings to develop their human resources in order to get welfare. One of way to get the welfare is with property. The spirit of Islamic teaching is making the rich and develops society. Ironically, there are still many problems related to backwardness in economy, poverty, jobless, and enormous employee. This phenomenon is caused by two factors, namely internal and external. Internal factor comes from man self who does not actualize his potential as hard as possible to change the condition. Meanwhile, external factors come beyond self, for example the coming of economic globalization, corruption, collusion, and nepotism that caused inequity distribution of wealth/ property. Therefore, this paper focuses on ownership that is supported by the verses of Qur’an. To make this research systematic, the researcher uses the method of thematic tafsir. As a thematic study, first, it elaborates ownership as the main theme through its definition, theory and any other discussions in relation to it. Second, it tries to explore some terms such as malaka, istakhlafa, and waratsa and also explore some terms that have tight correlation with ownership, and some verses of Qur’an supporting ownership. Dealing with the contribution of this research to Qur’anic studies, it analyzes the point of view in Qur’an on ownership.
KORELASI BUDAYA DALAM PEMBELAJARAN BAHASA ARAB BAGI NON ARAB
Authors: Ulfiah Umi Hanik , Munir Muhammad Misbahul 
Published: June 2023

Bahasa merupakan bagian yang tidak terpisahkan dari suatu sistem sosial. Dalam setiap komunikasi manusia saling menyampaikan informasi yang dapat berupa pikiran, gagasan, maksud, perasaan, maupun emosi secara langsung. Di dalam masyarakat seseorang tidak lagi dipandang sebagai individu yang terpisah dari yang lain. Ia merupakan anggota dari kelompok sosialnya. Dalam perkembangannya, bahasa menjadi ciri-ciri dari suatu kebudayaan. Budaya adalah pemikiran, tuntunan hidup, keyakinan, ideologi, adat kebiasaan yang ditemukan dalam suatu komunitas masyarakat. Tujuan naskah ini adalah untuk mengetahui apakah ada korelasi budaya dalam pembelajaran bahasa Arab non Arab?. Penulis fokus pada permasalahan 1) apakah ada korelasi budaya Arab dengan Pembalajaran bahasa Arab bagi Non Arab? 2) bagaimana korelasi itu terjadi dan dalam hal apa? Untuk membahas persoalan tersebut, penulis menggunakan metode studi pustaka. Hasil penelitian ini menunjukkan; 1) Dikatakan bahwa orang yang benar-benar ingin belajar bahasa Arab berarti belajar budaya penutur aslinya. 2) Pembelajaran bahasa Arab sendiri merupakan proses dalam diri individu yang berinteraksi dengan lingkungan untuk mendapatkan perubahan dalam perilakunya melalui kalimat-kalimat yang dipergunakan oleh masyarakat Arab untuk mengungkapkan tujuan-tujuan (pikiran dan perasaan) mereka dan bagi non Arab tidak akan bisa memahami makna kosa kata dan susunan kalimatnya tanpa memahami budaya masyarakat Arab muslim sebagai penutur asli. Kata kunci :Bahasa, Budaya, Pembelajaran Bahasa Arab, Non Arab
Dental İmplant Üstü Ölçü Sistemleri ve Teknikleri
Authors: Demirel Münir 
Published: June 2023

Dental implantlar, eksik dişleri yerine koymak ve estetik ve fonksiyonel bir gülümseme sağlamak için kullanılan etkili bir tedavi seçeneğidir. İmplant üstü protezlerin doğru bir şekilde tasarlanması ve uygun bir şekilde yerleştirilmesi, başarılı bir tedavi sonucu için önemlidir. Bu nedenle, ölçü aşaması implant tedavisi sürecindeki başarıyı etkileyen kritik bir aşamadır. Doğru bir ölçü, implantın uygun bir şekilde yerleştirilmesini, implant üstü protezin optimal bir şekilde tasarlanmasını ve hasta memnuniyetinin artmasını sağlar. Bu aşamada, implantın şekli, boyutu ve diğer önemli parametreleri dikkate alarak yapılır.
İmplant üstü ölçü işleminde, ağız içi tarayıcılar veya geleneksel ölçü malzemeleri kullanılarak gerçekleştirilebilir. Ölçü aşamasında kullanılan teknolojik gelişmeler, dijital ağız tarama sistemleri ve yazılımlarıyla birlikte daha hassas sonuçlar elde etmeyi mümkün kılmaktadır. Dijital ölçü yöntemleri, tarayıcılar aracılığıyla ağız içi görüntülerin alınmasını ve bu görüntülerin üç boyutlu modellere dönüştürülmesini sağlar. Bu sayede, daha hızlı, daha doğru ve daha konforlu bir ölçüm deneyimi sağlanabilir. Bir dental implant üstü ölçü alınırken, hastanın rahatlığı ve doğru verilerin elde edilmesi önemlidir. Ağız içindeki dokuların ve implantın durumu göz önünde bulundurularak, ölçü işlemi titizlikle yapılmalıdır. Optik gürültü, artifaktlar ve kullanıcı deneyimi gibi faktörler, elde edilen ölçülerin netliğini ve doğruluğunu etkileyebilir.
Sonuç olarak, dental implant üstü ölçü, başarılı bir implant tedavisi için kritik bir adımdır. Teknolojik gelişmeler ve dijital ölçüm yöntemleri, daha hassas ve güvenilir sonuçlar elde etmeyi sağlamaktadır. Bu sayede, implant tedavisi alan hastalara uygulanan tedavinin kalitesini ve yapılan restorasyonların estetik görünümünü de artırılabilmektedir.
Borsa İstanbul (BİST) Sektörlerinin PROMETHEE Yöntemiyle Finansal Performanslarının Analizi
Authors: Yürük Muhammed Fatih 
Published: June 2023

İşletmelerin işleyişi süresince karar verme sorumluluğuna sahip kişiler bazı dönemlerde karmaşık problemler ile karşı karşıya gelebilmektedirler. Bu problemler çok kritere sahip alternatifler arasından seçimler olmaktadır. Özellikle finansal tercihlerde çok kriterli karar verme teknikleri muhataplarına önemli bir avantaj sağlamaktadır. Bu teknikler, finansal kararları daha sistemli, objektif ve rasyonel bir şekilde ele almayı sağlar ayrıca farklı yatırım alternatiflerini analiz ederken risklerin ve getirilerin karşılaştırılmasını sağlar ve en uygun seçeneği belirlemeye yardımcı olur. Finansal tercihler genellikle çok boyutlu ve karmaşık olabilir. Çok kriterli karar verme teknikleri, bu farklı kriterleri ayrı ayrı değerlendirme ve karar verme sürecine entegre etme imkânı sunar. Finansal yatırım tercihlerinde bu derece önemli olan çok kriterli karar verme tekniklerinden biri bu çalışmada kullanılmıştır. Borsa İstanbul’da (BİST) işlem gören 13 sektörün finansal performansları çok kriterli karar verme yöntemlerinden olan, etkili ve verimli sonuçlar üretebilen PROMETHEE yöntemi ile analiz edilmiştir. Çalışmada literatürde finansal performansı ölçmede en çok kullanılan 10 finansal oran kullanılmıştır. Çalışma sonucunda “Madencilik ve Taş Ocakçılığı” sektörü en iyi finansal performans gösteren sektör olmuştur. Daha sonra sırasıyla “Gayrimenkul Faaliyetleri”, “Oteller ve Lokantalar” sektörleri finansal performansı iyi sektörler olmuştur. Çok kriterli karar verme teknikleri finansal tercih ve problemlerde kullanılabilecek etkili, hızlı, güvenilir, bilimsel bir yöntemdir.
Türkiye’de Eğitim Durumlarına Göre Kadın ve Erkek İstihdamı Üzerine Bir Değerlendirme
Authors: Toksoy Turgay 
Published: June 2023

İktisat biliminin ilgi alanına giren istihdam ve işsizlik önemli makro ekonomik göstergeler arasında yer almaktadır. Ekonomik ve sosyal refahın artırılması noktasında istihdamın artırılması veya işsizliğin azaltılması büyük önem arz etmektedir. Ülkeler açısından istihdam ve işsizlik sosyal politikaların odağında yer almaktadır. Son yıllarda küresel anlamda ortaya çıkan krizler politika yapıcıların insan kaynakları yönetimi anlamında mevcut politikalarını gözden geçirmelerine neden olmuştur. Özellikle Türkiye’de son yıllarda yüksek büyüme rakamlarına ulaşılmasına rağmen istihdam seviyelerinde tam tersi yönde bir azalış gözlenmektedir. Türkiye’ye yönelik yapılan bu çalışmada mevcut işgücünün eğitim durumlarına göre sınıflandırılarak kadın ve erkek bireyler için bir değerlendirme yapılmıştır. Türkiye İstatistik Kurumu tarafından yayımlanan 2014-2022 yılları işgücü istatistiklerinden istifade edilmiştir. Eğitim seviyesi olarak okuma yazma bilmeyen bireylerden başlanarak yükseköğretim mezunlarına doğru bir sınıflandırma yapılmıştır. Değerlendirme neticesinde Türkiye’de eğitimli birey sayısı artıkça istihdam seviyesinin yükseldiği görülmüştür. İstihdam içerisinde en fazla payı ilk olarak yükseköğretim mezunları alırken onu lise dengi mesleki okullardan mezun olanlar takip etmekte. Bu noktada mesleki eğitim veren okulların istihdam yaratması dikkate alınması ve üzerinde durulması gereken bir durum olarak değerlendirilmektedir.
ประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ เมื่อเกิดภาวะวิกฤติการณ์แพร่ระบาดของไวรัส COVID-19
Authors:   , โพธิปักขิย์ ประภาสี 
Published: June 2023

การศึกษาวิจัยเรื่อง “ประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ เมื่อเกิดภาวะวิกฤติการณ์แพร่ระบาดของไวรัส COVID-19” มีวัตถุประสงค์การวิจัย คือ 1) เพื่อเปรียบเทียบระดับประสิทธิภาพในการปฏิบัติงานแบบปกติ และแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ 2) เพื่อศึกษาถึงปัจจัยที่มีผลต่อประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ และ 3) เพื่อศึกษาปัญหาและอุปสรรคในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ ประชากร คือ พนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ จำนวน 360 คน เครื่องมือที่ใช้ในการวิจัย คือ แบบสอบถาม นำมาวิเคราะห์ด้วยสถิติ ค่าความถี่ ค่าร้อยละ ค่าเฉลี่ย ส่วนเบี่ยงเบนมาตรฐาน Paired Samples T-Test และการวิเคราะห์การถดถอยพหุคูณ (Multiple Regression Analysis)

ผลการศึกษา พบว่า 1) ระดับประสิทธิภาพในการปฏิบัติงานแบบปกติ ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่อยู่ในระดับมาก และ ระดับประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่อยู่ในระดับมาก 2) ระดับประสิทธิภาพในการปฏิบัติงานแบบปกติ ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ เท่ากับระดับประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่ 3) ปัจจัยด้านความเชื่อใจไว้วางใจ ปัจจัยด้านความคาดหวังในความพยายาม และ ปัจจัยด้านอิทธิพลทางสังคม มีผลต่อประสิทธิภาพในการปฏิบัติงานแบบ work from home ของพนักงานการไฟฟ้าส่วนภูมิภาค สำนักงานใหญ่
Hubungan Stres dan Status Pekerjaan Ibu dengan Kejadian Preeklampsia di RSUD Patut Patuh Patju Kabupaten Lombok Barat
Authors: Baiq Disnalia Siswari  , Supiani  , Desak Gede Sri Baktiasih  
Published: June 2023

ABSTRAK
Hampir 75% dari semua kematian ibu disebabkan oleh adanya komplikasi pada saat kehamilan, persalinan dan nifas. Preeklampsia merupakan salah satu komplikasi yang menyebabkan angka kematian ibu. Faktor stres, pekerjaan, aktivitas fisik, usia ibu, jarak persalinan, paritas merupakan salah satu faktor penyebab terjadinya preeklampsia. Penelitian ini untuk mengetahui hubungan stres dan status pekerjaan ibu dengan kejadian preeklampsia di RSUD Patut Patuh Patju Kabupaten Lombok Barat. Jenis penelitian ini adalah penelitian kuantitatif. Dengan rancangan cross sectional dengan jumlah sampel sebanyak 57 ibu hamil yang mengalami preeklampsia, dengan tekhnik pengambilan sampel total sampling. Analisis yang digunakan adalah analisis univariat dan bivariat. Berdasarkan hasil uji Chi Square didapatkan p-value 0,016 < α (0,05) maka dapat disimpulkan ada hubungan secara signifikan status pekerjaan ibu hamil dengan kejadian preeklampsia. Hasil uji Chi Square p-value 0,015 < α (0,05) disimpulkan bahwa ada hubungan secara signifikan tingkat stres ibu hamil dengan kejadian preeklampsia di RSUD Patut Patuh Patju Kabupaten Lombok Barat. Agar ibu hamil mempersiapkan diri dalam menghadapi kehamilan dan persalinan. Dengan perencanaan yang baik, mengatur pola hidup, prilaku hidup bersih dan sehat, pemeriksaan secara teratur dan mampu mengenali penyulit dalam kehamilan agar terhindar dari komplikasi.
Kata Kunci: Stres, Status Pekerjaan, Preeklampsia. ABSTRACT
Almost 75% of maternal deaths are caused by complications during pregnancy, childbirth and post partum period. Preeclampsia is one of the complications that causes maternal mortality. Stress factors, work, physical activity, maternal age, delivery distance, parity are one of the factors that cause preeclampsia. this study to determine the relationship between stress and maternal employment status with the incidence of preeclampsia in Patut Patuh Patju Hospital, West Lombok Regency .This type of research is quantitative research. With a cross-sectional design with a total sample of 57 pregnant women with preeclampsia, with a total sampling technique. The analysis used is univariate and bivariate analysis.Based on the results of the Chi Square test, p-value of 0.016 < (0.05) was obtained, it can be concluded that there is a significant relationship between the employment status of pregnant women and the incidence of preeclampsia. The results of the Chi Square p-value of 0.015 < (0.05) concluded that there was a significant relationship between stress levels of pregnant women and the incidence of preeclampsia in Patut Patuh Patju Hospital, West Lombok Regency. In order for pregnant women to prepare themselves in the face of pregnancy and childbirth. With good planning, regulating lifestyle, clean and healthy living behavior, regular checkups and being able to identify complications in pregnancy to avoid complications.
Keywords: Stress, Job Status, Preeclamps
Rapid unpaired CBCT‐based synthetic CT for CBCT‐guided adaptive radiotherapy
Authors: Wynne Jacob F. , Lei Yang , Pan Shaoyan , Wang Tonghe , Pasha Mosa , Luca Kirk , Roper Justin , Patel Pretesh , Patel Sagar A. , Godette Karen , Jani Ashesh B. , Yang Xiaofeng 
Published: June 2023

AbstractIn this work, we demonstrate a method for rapid synthesis of high‐quality CT images from unpaired, low‐quality CBCT images, permitting CBCT‐based adaptive radiotherapy. We adapt contrastive unpaired translation (CUT) to be used with medical images and evaluate the results on an institutional pelvic CT dataset. We compare the method against cycleGAN using mean absolute error, structural similarity index, root mean squared error, and Frèchet Inception Distance and show that CUT significantly outperforms cycleGAN while requiring less time and fewer resources. The investigated method improves the feasibility of online adaptive radiotherapy over the present state‐of‐the‐art.
Guest Entrapment in Metal‐Organic Nanosheets for Quantifiably Tuneable Luminescence
Authors: Sherman Dylan A. , Gutiérrez Mario , Griffiths Ian , Mollick Samraj , Amin Nader , Douhal Abderrazzak , Tan Jin‐Chong 
Published: June 2023

AbstractLuminescent metal‐organic frameworks (LMOFs) are promising materials for nanophotonic applications due to their tuneable structure and programmability. Yet, the 3D nature of LMOFs creates challenges for stability, optical transparency, and device integration. Metal‐organic nanosheets (MONs) potentially overcome these limitations by combining the benefits of metal‐organic frameworks (MOFs) with an atomically thin morphology of large planar dimensions. Herein, the bottom‐up synthesis of few‐layer thin ZIF‐7‐III MONs via facile low‐energy salt‐templating is reported. Employing guest@MOF design, the fluorophores Rhodamine B and Fluorescein are intercalated into ZIF‐7 nanosheets (Z7‐NS) to form light emissive systems exhibiting intense and highly photostable fluorescence. Aggregation and Förster resonance energy transfer, enabled by the MON framework, are revealed as the mechanisms behind fluorescence. By varying guest concentration, these mechanisms provide predictable quantified control over emission chromaticity of a dual‐guest Z7‐NS material and the definition of an “emission chromaticity fingerprint” – a unique subset of the visible spectrum that a material can emit by fluorescence.
Versatile Quasi‐Solid Ionic Conductive Elastomer Inspired by Desertification Control Strategy for Soft Iontronics
Authors: Zhou Rong , Jin Yong , Zeng Wenhua , Jin Hongyu , Shi Liangjie , Bai Long , Shang Xiang 
Published: June 2023

AbstractIonic conductors, such as hydrogels, ionogels, and eutectogels, have attained considerable research interest in various advanced application scenarios. However, such ionic conductors still suffer from the restriction of inherent liquid compositions, which may leak or evaporate. Herein, inspired by the control strategy of desertification caused by soil erosion, a novel internal‐external dual enhancement design strategy, i.e., increasing the interaction between the filler itself and its matrix, is proposed to firmly embed the deep eutectic solvent (DES) into polyurethane (PU) to prevent liquid leakage, such that the prepared ionic conductive elastomers (PU‐DESs) are quasi‐solid. The PU‐DESs exhibit marvelous versatility including high stretchability, tensile strength, toughness, self‐healing efficiency, antibacterial ability, ionic conductivity, and excellent freezing tolerance. More intriguingly, benefiting from their quasi‐solid feature, PU‐DESs are endowed with long‐term environmental stability. Thanks to these superb versatile features, PU‐DESs are further successfully applied in the wearable sensor and triboelectric nanogenerator (TENG) for monitoring human motions and converting mechanical energy into electrical energy, breaking away from the limitations of previous most soft iontronics such as liquid leakage or evaporation and weak mechanical strength. Hence, this study establishes an effective material design strategy for various soft iontronics demanding environmental stability and durability.
A Molecularly Engineered Zwitterionic Hydrogel with Strengthened Anti‐Polyelectrolyte Effect: from High‐Rate Solar Desalination to Efficient Electricity Generation
Authors: Zheng Si Yu , Zhou Jiahui , Si Mengjie , Wang Shuaibing , Zhu Fengbo , Lin Ji , Fu Jimin , Zhang Dong , Yang Jintao 
Published: June 2023

AbstractPolyzwitterionic hydrogel is an emerging material for solar‐driven water evaporation in saline environment due to its special anti‐polyelectrolyte effect, which is a promising approach to co‐generation of freshwater and electricity. However, the molecular impact on anti‐polyelectrolyte effect remains unclear, let alone to optimize the zwitterionic structure to promote water evaporation efficiency in high‐salinity brine. Herein, a molecularly engineered zwitterionic hydrogel is developed and the incorporated phenyl‐methylene‐imidazole motif greatly enhances the salt binding ability and strengthens anti‐polyelectrolyte effect, leading to boosted hydration, improved salt tolerance, ultra‐low evaporation enthalpy (almost half of traditional zwitterionic gel), and durable anti‐microbial ability in brine. Besides, gradient solar‐thermal network is penetrated to optimize water transport channel and heat confinement. The gel exhibits excellent evaporation rate of 3.17 kg m−2 h−1 in seawater, which is 1.6 times of that in water and such high efficiency could be maintained during 8 h continuous desalination, demonstrating outstanding salt tolerance. The high flux of ion stream can generate considerable voltage (321.3 mV) simultaneously. This work will bring new insights to the understanding of anti‐polyelectrolyte effect at molecular level and promote materials design for saline water evaporation.
Stabilizing Bottom Side of Perovskite via Preburying Cesium Formate toward Efficient and Stable Solar Cells
Authors: Deng Liangliang , Wang Haoliang , Rafique Saqib , Wang Yanyan , Hu Tianxiang , Liu Kai , Wang Yaxin , Li Xiaoguo , Xie Zuoti , Tang Jun , Liu Zhe , Li Jinpeng , Yuan Wei , Wang Jiao , Yu Anran , Zhan Yiqiang 
Published: June 2023

AbstractThe fragile bottom side of perovskite films is demonstrated to be harmful to the efficiency and stability of perovskite solar cells (PSCs) because the carrier extraction and recombination can be significantly influenced by the easily formed strain, voids, and defects on the bottom side. Nevertheless, the bottom side of perovskite films is usually overlooked because it remains a challenge to directly characterize and modify the bottom side. Herein, a facile and effective strategy is reported to stabilize the bottom side via preburying cesium formate (CsFo) into the SnO2 electron transport layer (ETL). It is found that the synergistic effect of cesium cation (Cs+) and formate anion (HCOO−) causes strain relaxation, void elimination, and defects’ reduction, which further facilitate the charge extraction. Consequently, the champion power conversion efficiency (PCE) of formamidinium (FA)‐based PSCs is increased from 23.34% to 24.50%. Meanwhile, the ultraviolet (UV), thermal, and operational stability are also enhanced. Finally, formamidinium–cesium (FACs)‐based PSCs are investigated to confirm the effectiveness of this preburied CsFo strategy, and the optimal device exhibits a champion PCE of 25.03% and a remarkably high fill factor (FF) of 85.65%.
Bottom‐Up Synthesis of CoxSn1−xS Nanosheets: A Ferromagnetic and Photoconductive Semiconductor
Authors: Zhang Su‐Yun , Mao Zhimin , Zhao Duo , Wang Chunmei , Tang Wei , Xie Yifei , Kang Chenxu , Liang Huawei , Liu Haoliang , Zeng Yu‐Jia 
Published: June 2023

Abstract2D ferromagnetic semiconductors are key to next‐generation spintronic devices in the post‐Moore era. The combination of ferromagnetic and optoelectronic properties offers exciting opportunities for advanced multifunctional devices in spin‐optoelectronic applications. Herein, the authors synthesize 2D van der Waals (vdW) CoxSn1‐xS with ferromagnetism and photoresponse through a bottom‐up reaction, which has a high yield compared to typical mechanical exfoliation. Ferromagnetic ordering is realized in 2D vdW semiconductor SnS by Co doping at the Sn sites. Magnetic properties are thoroughly studied at different doping concentrations, and first‐principles calculations are further performed to reveal the magnetism origin and spin interactions. In particular, a low Gilbert damping of 1.69 × 10−3 is obtained in vdW CoxSn1−xS through ferromagnetic resonance. In addition, photodetectors based on CoxSn1−xS quantum dots are demonstrated. These studies establish a promising semiconductor with both ferromagnetic ordering and photoelectric response, which provides unprecedented opportunities in spintronic‐photonic integrated applications.
Electrochemically Induced Conformational Change of Di‐Boronic Acid‐Functionalized Ferrocene for Direct Solid‐State Monitoring of Aqueous Fluoride Ions
Authors: Chang An‐Yi , Sandhu Samar S. , Fernando P. U. Ashvin I. , Kosgei Gilbert. K. , Bresnahan Caitlin , Cobb Jared S. , Morales Jose F. , Zhou Jiachi , Ding Shichao , Hanna Ashley , Jernberg Johanna , Wang Joseph 
Published: June 2023

AbstractWhile fluoride ions (F−) are abundant across environmental and biological systems, common procedures and potentiometric sensors for quantifying aqueous F− are inefficient, time‐consuming, and suffer from poor pH resiliency and high detection limits. Herein, this work reports a new di‐boronic acid‐functionalized ferrocene (FDBA) molecular receptor for noncovalent F− recognition, toward the development of a solid‐state miniaturized voltammetric fluoride sensor capable of direct and reversible F− detection in drinking water (DW) (pH 6) and community water (pH 7.6–9.1) over the µg L−1–mg L−1 range. The associated sensing mechanism is enabled by the conformational change of FDBA from the open (charge‐repelled) to closed (π‐dimerized) conformation, which is facilitated by the unique linkage of two electron‐accepting phenylboronic acid moieties with the electron‐donating ferrocene moiety using rigid conjugated amide linkers. The square wave voltammetric (SWV) oxidation current response of the FDBA‐based fluoride sensor is spectroscopically investigated, suggesting a combination of electrooxidation‐triggered conformational change of FDBA on a nanocarbon‐modified electrode, F− anion–π interactions, and resulting electron transfer between F− and FDBA. The performance of the voltammetric fluoride sensor is compared to that of a commercial liquid junction‐based fluoride ion‐selective electrode (F‐ISE), and of a solid‐contact (SC) F‐ISE sensor chip, demonstrating significant advantages versus traditional potentiometric F‐ISEs.