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news: Elucidating the Molecular Structural Origin of Efficient Emission Across Solid and Solution Phases of Single Benzene Fluorophores

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Archive 2026 The next Symposium on Computing π-Conjugated Compounds CΠC-15 will take place in Bologna, Italy, 01/02.2027. Organizer: Luca Muccioli. The Symposium on Computing π-Conjugated Compounds CΠC-16 took place in Warsaw, Poland, 05.-06.02.2026. Organizer: Silvio Osella. 04.02.2026: Seminar on Scientific Integrity, CeNT, Univ. Warsaw, invitated by Silvio Osella. Thanks again,, Silvio, for the kind invitation, and the participants for our discussion. 02.02.2026: Seminar on Scientific Integrity, Faculty of Chemistry, Univ. Torun, on invitation of Anna Kaczmarek-Kedziera & Marta Ziegler-Borowska. Thanks a lot again, Anna & Marta, for the kind invitation, and the audience on-site & online for the intense & thoughtful discussion. 28.01.2026: It was great to talk about #ResearchIntegrity at the Virtual Winter School on Computational Chemistry Thanks again to VWSCC - in particular Sandra Gomez - for the kind invitation, and the audience for the thoughtful discussion! 2025 19.12.2025: An honor to preside the PhD committee for Aitor Diaz Andrés at Univ. Pais Vasco. Donostia/San Sebastián. Congratulations, Aitor for the successful defense, and David Casanova, for the great supervision of his work! 21.11.2025: A real pleasure to speak on Scientific Integrity at the occasion of the Prof. award to Marcus Krüger, in Halle Germany; thank you again, Marcus, for the kind invitation! 17.11.2025: Great to see Prof. Zhigang Shuai again, now in Shenzhen! Thank you again, Zhigang, for the tour through the new HK Compus, and the dinner together! 16.11.2025: A great visit at Prof. Safakath Karuthedat's group at Tsinghua SIGS, Shenzhen! Thank you again Safakath, for the kind invitation to speak at 2nd International Symposium on Emerging PV Materials, both about our research and about scientific integrity! And thank you also to the students for their interest in my 15h Lecture on Photophysics of Conjugated Organic Materials, and our discussions! 15.11.2025: It was a great pleasure to visit Profs. Zengqi Xie and Yuguang Ma at South China University of Technology, Guangzhou. Thank you again, Zengqi for these intense 3 days, with research seminars, tutorials & discussions, as well as scientific integrity seminar & course! Special thank to the students for their interest & care! 30.10.2025: Dr. Indranil Bhattacharjee has left the group to join Distinkt, Barcelona, as R&D chief scientist. All the best for your future, Indranil! 01.11.2025: Happy to organize once more the Course on "Simulation of Materials" within the European MSc in Theoretical Chemistry & Computational Modelling EM-TCCM at IMDEA Nanoscience. Thanks to Org.Team members Cristina, Jos & Bego a! 24.10.2025: Great to talk about Research Integrity at Elettra Sincrotrone Trieste, within the Open Science Week of the Across Alliance Thank you again, Giovanni De Ninno & Barbara Ressel, for the kind invitation, and to the audience for the thoughtful discussion! 10.10.2024: Back in Tübingen to give my annual 30h lecture on "Photophysics of Conjugated Organic Materials, and seminar on Scientific Integrity Decline in Current Materials Research: Insights & Vistas Beneath the Tip of the Iceberg"... thank you again to everybody for the vivid participation! 16.09.2025: 3h Student course on Scientific Integrity for the PhD students of the EU DN 'Eiffel' project in Mons, organized by David Beljonne. Thanks again, David, for the kind invitation, and to all the students for your interest & thoughtful discussion! 15.09.2025: Visit of Yoann Olivier's group in Namur, talking about Emission Color Pureness and Efficiency Regulation in Organic Chromophores. Thank you again, Yoann, for the kind invitation! 03.09.2025: Leonardo Martins Carneiro has joined the group for a 9-months PhD Internship from Univ. Federal de ABC, Brazil (supervisors Paula Homem de Mello & Fernando Bartoloni). Welcome, Leo! 29.08.2025: 2nd Sino-German Workshop on Advanced Nanoimaging and Nanofabrication & Special Session on Alfred Meixner's retirement, in Tübingen: Thanks again, Dai Zhang & Team for the great event, and for the kind invitation! And thank you Fredy, for the joint 15y journey & all the best for your active retirement! Paper: Predicting Non-Covalent Interactions between Antioxidants in Biological Membranes through Molecular Dynamics read more... 21.07.2025: Great to have Prof. Jiyong Wang from Hangzhou Dianzi University with us at IMDEA Nanoscience, Madrid. Thanks again, Jiyong, for your seminar & discussion! 18.07.2025: It was great to give the 3h Student Course on "Scientific Survival in Times of CV Polishing & Citation Gaming" at Universidad de Verano UV Gand a Thank you, UEG2025 for the invitation, Mariam T rtola (Directora Escuela de Doctorado UV) for promotion, and big thanks again to all students for their interest & discussion! 15.07.2025: Talking about "Erosion of Scientific Integrity Fueled by Quantitative Evaluation Metrics" at the NEXT COST Action Annual Meeting at the Institute of Physics, Univ. Zagreb. Thanks again, Cristian Svetina, for the kind invitation, and to all for the intense debate! Paper: Elucidating the Molecular Structural Origin of Efficient Emission Across Solid and Solution Phases of Single Benzene Fluorophores read more... 27.06.2025: Lexie has successfully defended her thesis, which she has conducted under co-supervision of Prof. A. J. Meixner, Univ. Tübingen, and myself. Congratulations, Dr. Liangxuan Wang! Paper: Angularly Resolved Tip-Enhanced Raman Spectroscopy read more... 17.06.2025: Great to connect to the 'Research Integrity' community at ECEIA 2025 in Uppsala. Thanks again to the organizers for giving me the opportunity to talk about "Faces, Origins and Dimension of Scientific Integrity Decline - A Case Study in Materials Science" 30.05.2025: Talking about "Erosion of Scientific Integrity Fueled by Quantitative Evaluation Metrics" at the Faculty of Chemistry, Univ. Valencia, organized by I aki Tu on; thanks a lot for the invitation, and the thoughtful debate! 27.05.2025: It was a pleasure to be the Guest Speaker at the Workshop of the International Research Training Group (IRTG) on Photoluminescence in Supramolecular Matrices [Org: Frank W rthner, Yvonne Wagenh user], Julius-Maximilians-University Würzburg, Germany, 26.-27.05.2025, speaking about 'Emission Color Pureness and Efficiency Regulation in Organic Chromophores', as well as on 'Erosion of Scientific Integrity Fueled by Quantitative Evaluation Metrics'. Thank you again, Frank, for the kind invitation, and to all the students & colleagues for the inspiring discussions during the 2 days Paper: 1,6-Diazapyrene: A Well-Defined Small-Size Prototype System for Nitrogen-containing PAHs read more... 05.05.2025: Visit of Peter Gilch's group at the Inst for Phys. Chem., Heinrich-Heine-University D sseldorf, giving institute seminars on Excitons in Organic Solids, as well as on scientifc integrity. Thank you again, Peter, for the kind invitation! Paper: Organic Photocatalyst Utilizing Triplet Excited States for Highly Efficient Visible-Light-Driven Polymerizations read more... cover page: 22.04.2025: Seminar at the Department of Chemistry, College of Science, Kyung Hee University, Seoul, with Youngmi Kim. Thank you again, Youngmi, for the kind invitation and pleasant time! 21.04.2025: Back at Seoul Nat. Univ. with Seminars on our current research, and about scientifc integrity at the Organic Materials Design and Synthesis Laboratory, Department of Materials Science and Engineering, with Minsang Kwon. Thank you again, Minsang for the kind invitation, great discussions and pleasant time! Paper: Synthesis and Photophysics of Color-Pure Blue Emitters Featuring Oxaboraphenanthrene as a Novel Structural Motif read more... 18.03.2025: Liangxuan Wang @ IMDEA Nanoscience & shared PhD student w. Alfred J. Meixner @ Univ. Tübingen, was invited to join, among 600 students from around the world, the Lindau Nobel Laureate Meeting. Congratulations, Lexie! 12.03.2025: Thank you, I aki Tu on & Master Program of the Faculty of Chemistry, Univ. Valencia, for inviting me to talk about "Scientific Integrity Decline in Current Materials Research: Insights & Vistas Beneath the Tip of the Iceberg". Paper: A Multi-Component Visible-Light Initiating System for Rapid and Deep Photocuring through UV-Opaque Polyimide Films read more... The next Symposium on Computing π-Conjugated Compounds CΠC-16 will take place in Warsaw, Poland, 01/02.2026. Organizer: Silvio Osella. The Symposium on Computing π-Conjugated Compounds CΠC-15 took place in Siena, Italy, 07.-08.02.2025. Organizers: Daniele Padula & Samuele Giannini. Thank you also, Daniele & Samuele, for inviting me to talk about 'Faces of Scientific Integrity Decline - A Case Study in Computational Chemistry ' and to have a Round Table discussion with Alberto Baccini, Univ. Siena, on the subject 03.02.2025: Seminars on our current research, and about scientifc integrity at CNR Pisa, with Fabrizio Santoro & Giacomo Prampolini. Thank you again, for the kind invitation & great time, and in particular the intense discussions with junior & senior scientists; special thanks to Antonio Rizzo for his comments. Paper: Paper and Pencil Design of Color-Pure Organic Emitters: The Curious Case of Xanthene Dyes read more... 10.01.2025: Andrea Landi will join the group for a 2-months PhD Internship from Univ. Parma, supervisor Anna Painelli. Welcome, Andrea! 2024 worried about Science Ethics? 03.01.2025 Precocious early-career scientists with high citation counts proliferate: read more... 19.12.2024: An honor to preside the PhD committee for Marving Martin at Univ. Limoges. Congratulations, Dr. Martin for the successful defense, and Patrick Trouillas (here with his mural at Univ. Limoges), for the great supervision of his work! ...and, thank you as well, Patrick, for the kind invitation to talk about scientific integrity at the Univ. Limoges! ...and the great drawing :) worried about Science Ethics? 19.12.2024 German universities surrender to one of the world's infamous promotors of Salami & junk papers, papermills and predatory praxis: read more... ...while in the north, Finland Publication Forum takes radical measures, downgrading 271 MDPI and Frontiers journals to level "0" = trash: read more... 17.12.2024: The Early Stage Researcher Workshop took place at IMDEA Nanoscience with contributions by Maria, Siyang & Indranil; well done, everyone! worried about Science Ethics? 17.12.2024 a new trend in citation gaming: Shoddy commentaries a quick and dirty route to higher impact numbers are on the rise: read more... 16.12.2024: Siyang has successfully defended his thesis at UAM, presented at IMDEA. Congratulations, Dr. Feng! 06.12.2024: Seminars on our current research, and about scientifc integrity at Dept. of Chemistry, Univ. Parma, with Anna Painelli. Thank you again, Anna, for the kind invitation, intense discussions and the pleasant time. 23.11.2024: A pleasure to take part in the International Conference on Materials and Thermophysical Properties (ICMTP- 2024) in Jaipur; thank you again for the kind invitation for the online talk. 21.11.2024: Two intense days at the MPI Mainz with Xiomin Liu at the Dept. of Molecular Spectroscopy; Dir. Mischa Bonn); thank you again, Xiaomin, for the kind invitation, great discussions and the pleasant time! worried about Science Ethics? 19.11.2024 Clarivate removes another 2000 researchers from the list of "highly cited researcher" (HCR, with a total of ca. 'top-cited' 7000), see their analysis. After the former removals (2023: 1000, 2022: 500, 2021: 300), this makes a staggering total of 35% of removed HCR researchers! Self-evidently, Clarivate is frightened to death: selling numbers is their business model, and if people game the system unnoticed, their numbers are not worth a penny... Paper: Fluorescence Modulation through the Inverted Energy Gap Law in Triply N–B←N-Containing Windmill-Shaped Triazines read more... Great to be at the IQTC Meeting at Univ. Barcelona, 30.-31.10.2024; thank you again for the invitation! ...here with Carles Curutchet and Claudia Climent: Paper: Higher Order Cavity Modes for SERS in a Gold Nanosphere-on-Mirror Configuration read more... The Course on Theoretical Methods for Simulation of Materials (Coord. J. Gierschner), within the European Master in Theoretical Chemistry and Computational Modelling (TCCM), took place at IMDEA Nanoscience, 21.-25.10.2024. 11.10.2024: Back in Tübingen to give my annual 30h lecture on "Photophysics of Conjugated Organic Materials, and seminar on Scientific Integrity Decline in Current Materials Research: Insights & Vistas Beneath the Tip of the Iceberg"... thank you again to everybody for the vivid participation! 08.10.2024: ten researchers from IMDEA Nanoscience, incl. group leasder JG, are listed among the "2% most influential" in the 2023 update of the original 2019 survey by Ioannidis et al. ...in any case, although this was reputably earned by the IMDEA researchers, it is reminded that such quantitative measures are easily - and increasingly - gamed by authors through scientific hyperproliferation (inter alia by AI-assisted 'salami papers' and 'honorary' authorships), excessive self-citation and citation cartels (of authors a/o institutions a/o journals), which questions such listings... read more Enjoying the talk of Prof. Zhen-Chou Dong (Univ. of Science and Technology of China, Hefei) at the Department for Physical and Analytical Chemistry, Univ. Jaume I, Castell n, Spain, Sept 27, 2024. The IPOE - 4th International Conference on Interface Properties In Organic and Hybrid Electronic: Perspectives & Key Challenges, took place in Barcelona, Spain, Sept 17-20, 2024. The 1st Sino-German Workshop on Nanospectroscopy and Nanofabrication took place at Westlake University, Hangzhou, PR China, 07.-13.09.2024, organized by Prof. Dai Zhang (Univ. Tübingen) and Prof. Jiyong Wang (Westlake Univ.) within the framework of a Sino-German Mobility programme. Thank you, Jiyong, for hosting this great event, and the splendid time together! 01.09.2024: Mar a F. Fl rez-Angarita has joined the group through the EU COFUND Marie Sklodowska-Curie program IDEAL. Congratulations & welcome, Mar a! Paper: Rational Design of Color-Pure Blue Organic Emitters by Poly-Heteroaromatic Omni-Delocalization read more... The 29th IUPAC Symposium on Photochemistry took place in Valencia, Spain, July 14-19, 2024 Iskandar Tulanboev has successfully defended his MSc thesis at Univ. Valencia on July, 8th, 2024. Congratulations! Congratulations to Siyang for his 'Best Poster Presentation' sponsored by Advanced Materials Technologies, at the ICSM2024 - well done indeed! ...see also the Wiley Advanced Awards winners 2024 The International Conference on Science and Technology of Synthetic Electronic Materials (ICSM) 2024 took place in Dresden, Germany June 23-28, 2024, with participation of Lexie, Siyang & Indranil; here with Frank 18.06.2024: Talking about Erosion of Scientific Integrity Fueled by Quantitative Evaluation Metrics at my home institution, IMDEA Nanoscience, read more ...thanks for the vivid discussion and the great feedback paper: Deuterium Isotope Effect in Single Molecule Photophysics and Photochemistry of Hypericin read more... The Conference on Electronic Structure Priciples and Applications (ESPA) took place in Tarragona, Spain, 03.-07.06.2024 paper: Molecular Packing Topology and Interactions to Decipher Mechanical Compliances in Dicyano-distyrylbenzene Derivatives read more... paper: Explicit Modelling of Spectral Bandshapes by a Mixed Quantum-Classical Approach: Solvent Order and Temperature Effects in the Optical Spectra of Distyrylbenzene read more... cover page: 22.04.2024: It was a pleasure to talk at the ICMM-CSIC, Madrid, in the Directors Team Seminar series on Erosion of Scientific Integrity Fueled by Quantitative Evaluation Metrics read more 22.03.2024: Thank you again, ngela & Fernando, for hosting us at the University of Elche, with talks about Solving a 25 Years Old Riddle on Solid State Luminescence Enhancement & Quenching of Conjugated Organic Compounds (in memoriam Michael Hanack), and Scientific Integrity Decline in Current Materials Research: Insights & Vistas beneath the Tip of the Iceberg (organizer: Fernando Fernandez) read more 20.03.2024: Great to discuss with David Curiel at University of Murcia, and thank you, David, for inviting me to speak about Charge Transfer State Engineering for Tailor-Made Luminescent Organic Materials read more 01.03.2024: Marco Terruzzi will join the group for a 3-months MSc Internship from Univ. Milano Bicocca, supervisors Adele Sassela & Alessadro Minotto. Welcome, Marco! 01.03.2024: Thank you, Juanjo, for inviting me to speak about Scientific Integrity Decline in Current Materials Research: Insights & Vistas beneath the Tip of the Iceberg at the IFIMAC Condensed Matter Physics Center, Universidad Aut noma de Madrid (UAM), organizer: Juan Jos Palacios read more 12.02.2024: according to a recent report in the journal 'Nature', China conducts first nationwide review of retractions and research misconduct; Nature analysis reveals that since 2021 there have been more than 17,000 retractions with Chinese co-authors. paper: Ultraviolet Light Blocking Optically Clear Adhesives for Foldable Displays via Highly Efficient Visible-Light Curing read more... The next Symposium on Computing π-Conjugated Compounds CΠC-15 will take place in Toscany, Italy, 01/02.2025. Organizer: Daniele Padula & Samuele Giannini. The Symposium on Computing π-Conjugated Compounds CΠC-14 took place in Donostia/San Sebastian, Spain, 08.-09.02.2024. Organizer: Claire Tonnel . Thank you also, Claire, for inviting me for the seminar on 'Scientific Misconduct in Current Materials Research' at DOPC just before the CΠC read more 02.02.2024: Dr. Juan Carlos Roldao (now ICMol, Valencia) has received the "Premio Extraordinario de Doctorado" of the University Aut noma de Madrid for his PhD thesis in Condensed Matter Physics. Congratulations, Juan! read more..., and see BO-UAM worried about Science Ethics? 31.01.2024: according to a recent report in the journal 'Science', the recent removal of 1000 researchers from Clarivate's HCR list concerns the entire field of mathematics, due to the formation of a citation cartel (read more), pushing unknown authors of irrelevant papers into the HCR list. Apparently, Clarivate is mortally terrified to loose it's business model, as 'citation gaming' becomes a popular 'sport' among certain researchers, fulfilling Goodhart's law. Citation Cartels are found also in other fields and countries, see e.g. Clarivate Crackdown on Biochar Citation Cartel'' ...for our own research field, take a look also at these profiles (example-1, example-2), to conceive a qualified opinion. ...if you are interested in these issues, take a look at my seminar on Scientific Integrity Decline in Current Materials Research: Insights & Vistas Beneath the Tip of the Iceberg. Talking about 'Good Scientific Practice' at the 'Science Days' of the Institute of Materials Science (IUMA), University of Alicante, 18.-19.01.2024. Thank you, Juan Carlos Sancho Garc a, for the invitation to the great event, your kind post, and everybody for the excellent discussion! go to the News Archive TOP