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382 results on '"Milosavljević, Aleksandar"'

1. String Diagram Rewriting Modulo Commutative (Co)monoid Structure

Author

Milosavljevic, Aleksandar, Piedeleu, Robin, and Zanasi, Fabio

Subjects
Computer Science - Logic in Computer Science, Mathematics - Category Theory
Abstract

String diagrams constitute an intuitive and expressive graphical syntax that has found application in a very diverse range of fields including concurrency theory, quantum computing, control theory, machine learning, linguistics, and digital circuits. Rewriting theory for string diagrams relies on a combinatorial interpretation as double-pushout rewriting of certain hypergraphs. As previously studied, there is a `tension' in this interpretation: in order to make it sound and complete, we either need to add structure on string diagrams (in particular, Frobenius algebra structure) or pose restrictions on double-pushout rewriting (resulting in `convex' rewriting). From the string diagram viewpoint, imposing a full Frobenius structure may not always be natural or desirable in applications, which motivates our study of a weaker requirement: commutative monoid structure. In this work we characterise string diagram rewriting modulo commutative monoid equations, via a sound and complete interpretation in a suitable notion of double-pushout rewriting of hypergraphs.

Published
2022

2. tmVar 3.0: an improved variant concept recognition and normalization tool

Author

Wei, Chih-Hsuan, Allot, Alexis, Riehle, Kevin, Milosavljevic, Aleksandar, and Lu, Zhiyong

Subjects
Computer Science - Computation and Language
Abstract

Previous studies have shown that automated text-mining tools are becoming increasingly important for successfully unlocking variant information in scientific literature at large scale. Despite multiple attempts in the past, existing tools are still of limited recognition scope and precision. We propose tmVar 3.0: an improved variant recognition and normalization tool. Compared to its predecessors, tmVar 3.0 is able to recognize a wide spectrum of variant related entities (e.g., allele and copy number variants), and to group different variant mentions belonging to the same concept in an article for improved accuracy. Moreover, tmVar3 provides additional variant normalization options such as allele-specific identifiers from the ClinGen Allele Registry. tmVar3 exhibits a state-of-the-art performance with over 90% accuracy in F-measure in variant recognition and normalization, when evaluated on three independent benchmarking datasets. tmVar3 is freely available for download. We have also processed the entire PubMed and PMC with tmVar3 and released its annotations on our FTP. Availability: ftp://ftp.ncbi.nlm.nih.gov/pub/lu/tmVar3

Published
2022

4. Imagelytics: A Deep Learning-Based Image Classification Tool to Support Bioassessment

Author

Milosavljević, Aleksandar, Predić, Bratislav, Milošević, Djuradj, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Jove, Esteban, editor, Zayas-Gato, Francisco, editor, Michelena, Álvaro, editor, and Calvo-Rolle, José Luis, editor

Published
2023
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5. exRNA-eCLIP intersection analysis reveals a map of extracellular RNA binding proteins and associated RNAs across major human biofluids and carriers

Author

LaPlante, Emily L., Stürchler, Alessandra, Fullem, Robert, Chen, David, Starner, Anne C., Esquivel, Emmanuel, Alsop, Eric, Jackson, Andrew R., Ghiran, Ionita, Pereira, Getulio, Rozowsky, Joel, Chang, Justin, Gerstein, Mark B., Alexander, Roger P., Roth, Matthew E., Franklin, Jeffrey L., Coffey, Robert J., Raffai, Robert L., Mansuy, Isabelle M., Stavrakis, Stavros, deMello, Andrew J., Laurent, Louise C., Wang, Yi-Ting, Tsai, Chia-Feng, Liu, Tao, Jones, Jennifer, Van Keuren-Jensen, Kendall, Van Nostrand, Eric, Mateescu, Bogdan, and Milosavljevic, Aleksandar

Published
2023
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8. Identifying biomarkers of differential chemotherapy response in TNBC patient-derived xenografts with a CTD/WGCNA approach

Author

Petrosyan, Varduhi, Dobrolecki, Lacey E., Thistlethwaite, Lillian, Lewis, Alaina N., Sallas, Christina, Srinivasan, Ramakrishnan R., Lei, Jonathan T., Kovacevic, Vladimir, Obradovic, Predrag, Ellis, Matthew J., Osborne, C. Kent, Rimawi, Mothaffar F., Pavlick, Anne, Shafaee, Maryam Nemati, Dowst, Heidi, Jain, Antrix, Saltzman, Alexander B., Malovannaya, Anna, Marangoni, Elisabetta, Welm, Alana L., Welm, Bryan E., Li, Shunqiang, Wulf, Gerburg M., Sonzogni, Olmo, Huang, Chen, Vasaikar, Suhas, Hilsenbeck, Susan G., Zhang, Bing, Milosavljevic, Aleksandar, and Lewis, Michael T.

Published
2023
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10. Phase 2 of extracellular RNA communication consortium charts next-generation approaches for extracellular RNA research

Author

Mateescu, Bogdan, Jones, Jennifer C., Alexander, Roger P., Alsop, Eric, An, Ji Yeong, Asghari, Mohammad, Boomgarden, Alex, Bouchareychas, Laura, Cayota, Alfonso, Chang, Hsueh-Chia, Charest, Al, Chiu, Daniel T., Coffey, Robert J., Das, Saumya, De Hoff, Peter, deMello, Andrew, D’Souza-Schorey, Crislyn, Elashoff, David, Eliato, Kiarash R., Franklin, Jeffrey L., Galas, David J., Gerstein, Mark B., Ghiran, Ionita H., Go, David B., Gould, Stephen, Grogan, Tristan R., Higginbotham, James N., Hladik, Florian, Huang, Tony Jun, Huo, Xiaoye, Hutchins, Elizabeth, Jeppesen, Dennis K., Jovanovic-Talisman, Tijana, Kim, Betty Y.S., Kim, Sung, Kim, Kyoung-Mee, Kim, Yong, Kitchen, Robert R., Knouse, Vaughan, LaPlante, Emily L., Lebrilla, Carlito B., Lee, L. James, Lennon, Kathleen M., Li, Guoping, Li, Feng, Li, Tieyi, Liu, Tao, Liu, Zirui, Maddox, Adam L., McCarthy, Kyle, Meechoovet, Bessie, Maniya, Nalin, Meng, Yingchao, Milosavljevic, Aleksandar, Min, Byoung-Hoon, Morey, Amber, Ng, Martin, Nolan, John, De Oliveira Junior, Getulio P., Paulaitis, Michael E., Phu, Tuan Anh, Raffai, Robert L., Reátegui, Eduardo, Roth, Matthew E., Routenberg, David A., Rozowsky, Joel, Rufo, Joseph, Senapati, Satyajyoti, Shachar, Sigal, Sharma, Himani, Sood, Anil K., Stavrakis, Stavros, Stürchler, Alessandra, Tewari, Muneesh, Tosar, Juan P., Tucker-Schwartz, Alexander K., Turchinovich, Andrey, Valkov, Nedyalka, Van Keuren-Jensen, Kendall, Vickers, Kasey C., Vojtech, Lucia, Vreeland, Wyatt N., Wang, Ceming, Wang, Kai, Wang, ZeYu, Welsh, Joshua A., Witwer, Kenneth W., Wong, David T.W., Xia, Jianping, Xie, Ya-Hong, Yang, Kaichun, Zaborowski, Mikołaj P., Zhang, Chenguang, Zhang, Qin, Zivkovic, Angela M., and Laurent, Louise C.

Published
2022
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12. MPAPASS software enables stitched multiplex, multidimensional EV repertoire analysis and a standard framework for reporting bead-based assays

Author

Welsh, Joshua A., Killingsworth, Bryce, Kepley, Julia, Traynor, Tim, Cook, Sean, Savage, Jason, Marte, Jenn, Lee, Min-Jung, Maeng, Hoyoung M., Pleet, Michelle L., Magana, Setty, Gorgens, André, Maire, Cecile L., Lamszus, Katrin, Ricklefs, Franz L., Merino, Maria J., Linehan, W. Marston, Greten, Tim, Cooks, Tomer, Harris, Curtis C., Apolo, Andrea, Abdel-Mageed, Asim, Ivanov, Alexander R., Trepel, Jane B., Roth, Matthew, Tkach, Mercedes, Milosavljevic, Aleksandar, Théry, Clotilde, LeBlanc, Amy, Berzofsky, Jay A., Ruppin, Eytan, Aldape, Kenneth, Camphausen, Kevin, Gulley, James L., Ghiran, Ionita, Jacobson, Steve, and Jones, Jennifer C.

Published
2022
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13. A study of the valence photoelectron spectrum of uracil and mixed water–uracil clusters.

Author

Mattioli, Giuseppe, Avaldi, Lorenzo, Bolognesi, Paola, Casavola, Annarita, Morini, Filippo, Van Caekenberghe, Thomas, Bozek, John D., Castrovilli, Mattea C., Chiarinelli, Jacopo, Domaracka, Alicja, Indrajith, Suvasthika, Maclot, Sylvain, Milosavljević, Aleksandar R., Nicolafrancesco, Chiara, Nicolas, Christophe, and Rousseau, Patrick

Subjects
PHOTOELECTRON spectra, URACIL, NATURAL orbitals, AB-initio calculations, IONIZATION energy
Abstract

The valence ionization of uracil and mixed water–uracil clusters has been studied experimentally and by ab initio calculations. In both measurements, the spectrum onset shows a red shift with respect to the uracil molecule, with the mixed cluster characterized by peculiar features unexplained by the sum of independent contributions of the water or uracil aggregation. To interpret and assign all the contributions, we performed a series of multi-level calculations, starting from an exploration of several cluster structures using automated conformer-search algorithms based on a tight-binding approach. Ionization energies have been assessed on smaller clusters via a comparison between accurate wavefunction-based approaches and cost-effective DFT-based simulations, the latter of which were applied to clusters up to 12 uracil and 36 water molecules. The results confirm that (i) the bottom-up approach based on a multilevel method [Mattioli et al. Phys. Chem. Chem. Phys. 23, 1859 (2021)] to the structure of neutral clusters of unknown experimental composition converges to precise structure–property relationships and (ii) the coexistence of pure and mixed clusters in the water–uracil samples. A natural bond orbital (NBO) analysis performed on a subset of clusters highlighted the special role of H-bonds in the formation of the aggregates. The NBO analysis yields second-order perturbative energy between the H-bond donor and acceptor orbitals correlated with the calculated ionization energies. This sheds light on the role of the oxygen lone-pairs of the uracil CO group in the formation of strong H-bonds, with a stronger directionality in mixed clusters, giving a quantitative explanation for the formation of core–shell structures. [ABSTRACT FROM AUTHOR]

Published
2023
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16. The impact of co/polymorbidity on the therapeutic response to vitamin D in patients with osteoporosis and vitamin D hypovitaminosis in primary health care

Author

Mihajlović Filip, Mihajlović Kristina, Milosavljević Aleksandar, Ćorović Irfan, Ćorović Emina, and Jelić Ivana

Subjects
vitamin d, detrical®1000, osteoporosis, co / polymorbidities, Medicine
Abstract

Introduction: Vitamin D, its active metabolites and analogs, represent a group of compounds with numerous functions in the body. The activated receptor for vitamin D in the intestines stimulates the synthesis of the binding protein for calcium, bone stimulates the production of osteocalcin, osteoponin, alkaline phosphatase, increases the transport of calcium from vancellular to intracellular cells, can mobilize calcium from the intracellular calcium reservoir and enhance the metabolism of phosphatidylinositol. Objective: The aim of this paper is to examine the possible cause-and-effect linkages between the therapeutic response and the use of vitamin D and additional diseases and therapies in primary health care patients with vitamin D deficiency and osteoporosis. Material and method: Epidemiological survey of osteoporosis and hypovitaminosis D vitamins, was conducted as a retrospective study in patients in primary health care of the Health Kragujevac, after receiving the decision of the Ethics Committee of the Health Center Kragujevac. In the period from 01. 02. 2018. to 22. 10. 2019. an study was conducted, in which patients with various diseases, ages 30 to 65, were administered vitamin D (Detrical® 1000), and levels of serum D vitamins were measured before and after therapy. Results: Statistically significant differences in the response to vitamin D (Detrical®1000) were observed in patients with hypertension, diabetes and thyroid disorders (p < 0.05). The results obtained also indicate, that there are statistically significant differences in patients with hypertension treated with combination therapy with ACE inhibitor and diuretic (p < 0.05). T-assay of samples showed a statistically significant increase in the level of vitamin D in the subjects after treatment with Detrical® (p < 0.0001). Conclusion: Ensuring adequate vitamin D intake is a key ingredient in the treatment of osteoporosis. People at high risk of developing fractures benefit from taking vitamin D supplementation, at least 800 IJ per day. By entering one tablet daily, Detrical®1000, a better neuromuscular function is achieved.

Published
2020

18. Vacuum UV studies of protonated serine clusters

Author

Licht, Ori, primary, Nihamkin, Maria, additional, Anaby, Mirit, additional, Rousseau, Patrick, additional, Giuliani, Alexandre, additional, Milosavljević, Aleksandar R, additional, Singh, Raj, additional, Nguyen, Vy T T, additional, Nahon, Laurent, additional, and Toker, Yoni, additional

Published
2023
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20. Plasmonic reactivity of halogen thiophenols on gold nanoparticles studied by SERS and XPS.

Author

Schürmann, Robin, Dutta, Anushree, Ebel, Kenny, Tapio, Kosti, Milosavljević, Aleksandar R., and Bald, Ilko

Subjects
SERS spectroscopy, SURFACE plasmon resonance, PLASMONICS, GOLD nanoparticles, CHARGE carriers, X-ray photoelectron spectroscopy, METAL nanoparticles, VALENCE bands
Abstract

Localized surface plasmon resonances on noble metal nanoparticles (NPs) can efficiently drive reactions of adsorbed ligand molecules and provide versatile opportunities in chemical synthesis. The driving forces of these reactions are typically elevated temperatures, hot charge carriers, or enhanced electric fields. In the present work, dehalogenation of halogenated thiophenols on the surface of AuNPs has been studied by surface enhanced Raman scattering (SERS) as a function of the photon energy to track the kinetics and identify reaction products. Reaction rates are found to be surprisingly similar for different halothiophenols studied here, although the bond dissociation energies of the C–X bonds differ significantly. Complementary information about the electronic properties at the AuNP surface, namely, work-function and valence band states, has been determined by x-ray photoelectron spectroscopy of isolated AuNPs in the gas-phase. In this way, it is revealed how the electronic properties are altered by the adsorption of the ligand molecules, and we conclude that the reaction rates are mainly determined by the plasmonic properties of the AuNPs. SERS spectra reveal differences in the reaction product formation for different halogen species, and, on this basis, the possible reaction mechanisms are discussed to approach an understanding of opportunities and limitations in the design of catalytical systems with plasmonic NPs. [ABSTRACT FROM AUTHOR]

Published
2022
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21. Roadmap on dynamics of molecules and clusters in the gas phase

Author

Zettergren, Henning, Domaracka, Alicja, Schlathölter, Thomas, Bolognesi, Paola, Díaz-Tendero, Sergio, Łabuda, Marta, Tosic, Sanja, Maclot, Sylvain, Johnsson, Per, Steber, Amanda, Tikhonov, Denis, Castrovilli, Mattea Carmen, Avaldi, Lorenzo, Bari, Sadia, Milosavljević, Aleksandar R., Palacios, Alicia, Faraji, Shirin, Piekarski, Dariusz G., Rousseau, Patrick, Ascenzi, Daniela, Romanzin, Claire, Erdmann, Ewa, Alcamí, Manuel, Kopyra, Janina, Limão-Vieira, Paulo, Kočišek, Jaroslav, Fedor, Juraj, Albertini, Simon, Gatchell, Michael, Cederquist, Henrik, Schmidt, Henning T., Gruber, Elisabeth, Andersen, Lars H., Heber, Oded, Toker, Yoni, Hansen, Klavs, Noble, Jennifer A., Jouvet, Christophe, Kjær, Christina, Nielsen, Steen Brøndsted, Carrascosa, Eduardo, Bull, James, Candian, Alessandra, and Petrignani, Annemieke

Published
2021
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23. Clone-array pooled shotgun mapping and sequencing: design and analysis of experiments

Author

Csürös, Miklós, Li, Bingshan, and Milosavljevic, Aleksandar

Subjects
Quantitative Biology - Genomics, J.3, G.2.1, G.3
Abstract

This paper studies sequencing and mapping methods that rely solely on pooling and shotgun sequencing of clones. First, we scrutinize and improve the recently proposed Clone-Array Pooled Shotgun Sequencing (CAPSS) method, which delivers a BAC-linked assembly of a whole genome sequence. Secondly, we introduce a novel physical mapping method, called Clone-Array Pooled Shotgun Mapping (CAPS-MAP), which computes the physical ordering of BACs in a random library. Both CAPSS and CAPS-MAP construct subclone libraries from pooled genomic BAC clones. We propose algorithmic and experimental improvements that make CAPSS a viable option for sequencing a set of BACs. We provide the first probabilistic model of CAPSS sequencing progress. The model leads to theoretical results supporting previous, less formal arguments on the practicality of CAPSS. We demonstrate the usefulness of CAPS-MAP for clone overlap detection with a probabilistic analysis, and a simulated assembly of the Drosophila melanogaster genome. Our analysis indicates that CAPS-MAP is well-suited for detecting BAC overlaps in a highly redundant library, relying on a low amount of shotgun sequence information. Consequently, it is a practical method for computing the physical ordering of clones in a random library, without requiring additional clone fingerprinting. Since CAPS-MAP requires only shotgun sequence reads, it can be seamlessly incorporated into a sequencing project with almost no experimental overhead., Comment: An extended abstract is to be published at the 14th International Conference on Genome Informatics (GIW), December 14-17, 2003, Yokohama, Japan

Published
2003

25. Resonant Inner-Shell Photofragmentation of Adamantane (C10H16)

Author

Ganguly, Smita, primary, Gisselbrecht, Mathieu, additional, Eng-Johnsson, Per, additional, Feifel, Raimund, additional, Díaz-Tendero, Sergio, additional, Muchová, Eva, additional, Milosavljević, Aleksandar R., additional, Rousseau, Patrick, additional, and Maclot, Sylvain, additional

Published
2023
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30. Inner-shell photoelectron spectroscopy unveils the interplay between hydrogen bonds and π−π stacking in clusters of biomolecules in the gas phase: hypoxanthine clusters as a case study.

Author

Barreiro-Lage, Darío, Mattioli, Giuseppe, Nicolafrancesco, Chiara, Rousseau, Patrick, Milosavljević, Aleksandar R, and Díaz-Tendero, Sergio

Abstract

We present a joint theoretical-experimental study on the inner-shell photoionization of hypoxanthine clusters in the gas phase. Simulations were performed using a computational strategy that combines molecular dynamics to explore the conformers of the clusters, density functional theory for geometry optimization and inner shell photoionization calculations. Two main intermolecular interactions are observed: hydrogen-bonds (HB) and π − π stacking. When increasing the cluster size, a combination of both kinds of interaction occurs. We show that such intermolecular interactions play a role in the chemical shift observed in X-ray photoemission spectroscopy experiments. In particular, we highlight the interplay between charge depletion and charge accumulation in regions where HBs stabilize the clusters. [ABSTRACT FROM AUTHOR]

Published
2024
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32. Peptide Bond Formation in the Protonated Serine Dimer Following Vacuum UV Photon‐Induced Excitation

Author

Licht, Ori, primary, Barreiro‐Lage, Darío, additional, Rousseau, Patrick, additional, Giuliani, Alexandre, additional, Milosavljević, Aleksandar R., additional, Isaak, Avinoam, additional, Mastai, Yitzhak, additional, Albeck, Amnon, additional, Singh, Raj, additional, Nguyen, Vy T. T., additional, Nahon, Laurent, additional, Martínez‐Fernández, Lara, additional, Díaz‐Tendero, Sergio, additional, and Toker, Yoni, additional

Published
2023
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33. String Diagram Rewriting Modulo Commutative (Co)Monoid Structure

Author

Aleksandar Milosavljević and Robin Piedeleu and Fabio Zanasi, Milosavljević, Aleksandar, Piedeleu, Robin, Zanasi, Fabio, Aleksandar Milosavljević and Robin Piedeleu and Fabio Zanasi, Milosavljević, Aleksandar, Piedeleu, Robin, and Zanasi, Fabio

Abstract

String diagrams constitute an intuitive and expressive graphical syntax that has found application in a very diverse range of fields including concurrency theory, quantum computing, control theory, machine learning, linguistics, and digital circuits. Rewriting theory for string diagrams relies on a combinatorial interpretation as double-pushout rewriting of certain hypergraphs. As previously studied, there is a "tension" in this interpretation: in order to make it sound and complete, we either need to add structure on string diagrams (in particular, Frobenius algebra structure) or pose restrictions on double-pushout rewriting (resulting in "convex" rewriting). From the string diagram viewpoint, imposing a full Frobenius structure may not always be natural or desirable in applications, which motivates our study of a weaker requirement: commutative monoid structure. In this work we characterise string diagram rewriting modulo commutative monoid equations, via a sound and complete interpretation in a suitable notion of double-pushout rewriting of hypergraphs.

Published
2023
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34. Dynamics of core-excited ammonia: disentangling fragmentation pathways by complementary spectroscopic methods

Author

Travnikova, Oksana, primary, Hosseini, Farzad, additional, Marchenko, Tatiana, additional, Guillemin, Renaud, additional, Ismail, Iyas, additional, Moussaoui, Roba, additional, Journel, Loïc, additional, Milosavljević, Aleksandar R., additional, Bozek, John D., additional, Kukk, Edwin, additional, Püttner, Ralph, additional, Piancastelli, Maria Novella, additional, and Simon, Marc, additional

Published
2023
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40. Prediction of Bus Motion and Continuous Query Processing for Traveler Information Services

Author

Predic, Bratislav, Stojanovic, Dragan, Djordjevic-Kajan, Slobodanka, Milosavljevic, Aleksandar, Rancic, Dejan, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ioannidis, Yannis, editor, Novikov, Boris, editor, and Rachev, Boris, editor

Published
2007
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42. Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets

Author

Danilović, Danijela, primary, Milosavljević, Aleksandar R., additional, Sapkota, Pitambar, additional, Dojčilović, Radovan, additional, Tošić, Dragana, additional, Vukmirović, Nenad, additional, Jocić, Milan, additional, Djoković, Vladimir, additional, Ptasinska, Sylwia, additional, and Božanić, Dušan K., additional

Published
2022
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43. Electronic Structure and Solvation Effects from Core and Valence Photoelectron Spectroscopy of Serum Albumin

Author

Renault, Jean-Philippe, primary, Huart, Lucie, additional, Milosavljević, Aleksandar R., additional, Bozek, John D., additional, Palaudoux, Jerôme, additional, Guigner, Jean-Michel, additional, Marichal, Laurent, additional, Leroy, Jocelyne, additional, Wien, Frank, additional, Hervé Du Penhoat, Marie-Anne, additional, and Nicolas, Christophe, additional

Published
2022
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45. Electronic Properties of Silver–Bismuth Iodide Rudorffite Nanoplatelets

Author

Danilović, Danijela, Milosavljević, Aleksandar R., Sapkota, Pitambar, Dojčilović, Radovan, Tošić, Dragana, Vukmirović, Nenad, Jocić, Milan, Đoković, Vladimir, Ptasinska, Sylwia, Božanić, Dušan K., Danilović, Danijela, Milosavljević, Aleksandar R., Sapkota, Pitambar, Dojčilović, Radovan, Tošić, Dragana, Vukmirović, Nenad, Jocić, Milan, Đoković, Vladimir, Ptasinska, Sylwia, and Božanić, Dušan K.

Abstract

Silver–bismuth iodide (Ag–Bi–I) rudorffites are chemically stable and non-toxic materials that can act as a possible lead-free replacement for methylammonium lead halides in optoelectronic applications. We report on a simple route for fabricating Ag–Bi–I colloidal nanoplatelets approximately 160 nm in lateral dimensions and 1–8 nm in thickness via exfoliation of Ag–Bi–I rudorffite powders in acetonitrile. The valence band electronic structure of isolated Ag–Bi–I nanoplatelets was investigated using synchrotron radiation to perform X-ray aerosol photoelectron spectroscopy (XAPS). The ionization energy of the material was found to be 6.1 ± 0.2 eV with respect to the vacuum level. UV–vis absorption and photoluminescence spectroscopies of the Ag–Bi–I colloids showed that the optical properties of the nanoplatelets originate from I 5p to Bi 6p and I 5p to I 5p transitions, which is further confirmed by density functional theory (DFT) calculations. Finally, calculations based on the DFT and k · p theoretical methods showed that the quantum confinement effect is very weak in the system studied.

Published
2022

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