cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.158371.v2/t7
title: "$\text{Y} \to \tau\tau$ limits (2D)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$ which subsequently decay to a pair of photons and a pair of tau leptons, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH} \to \gamma\gamma\tau\tau)$. The limits are shown for different values of $m_\mathrm{X}$ in the range 300-1000 GeV and $m_\mathrm{Y}$ in the range 50-800 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.17182/hepdata.158371.v2/t8
title: "Low-mass $\text{Y}\to\gamma\gamma$ limits ($m_\text{X}$ stacks)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{Y}$ in the range 70-125 GeV and at particular values of $m_\mathrm{X}$ in the range 300-1000 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.17182/hepdata.158371.v2/t9
title: "Low-mass $\text{Y}\to\gamma\gamma$ limits ($m_\text{Y}$ stacks)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{X}$ in the range 300-800 GeV and at particular values of $m_\mathrm{Y}$ in the range 70-125 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.3535/040-cnf-2jd
title: Alisma plantago-aquatica L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/040-mq4-kwv
title: Carex glareosa Schkuhr ex Wahlenb.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.17182/hepdata.158371.v2/t10
title: "Low-mass $\text{Y}\to\gamma\gamma$ limits (2D)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{X}$ in the range 300-1000 GeV and $m_\mathrm{Y}$ in the range 70-125 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.17182/hepdata.158371.v2/t11
title: "High-mass $\text{Y}\to\gamma\gamma$ limits ($m_\text{X}$ stacks)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{Y}$ in the range 125-800 GeV and at particular values of $m_\mathrm{X}$ in the range 300-1000 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.17182/hepdata.158371.v2/t12
title: "High-mass $\text{Y}\to\gamma\gamma$ limits ($m_\text{Y}$ stacks)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{X}$ in the range 300-800 GeV and at particular values of $m_\mathrm{Y}$ in the range 125-800 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.17182/hepdata.158371.v2/t13
title: "High-mass $\text{Y}\to\gamma\gamma$ limits (2D)" of "Search for the nonresonant and resonant production of a Higgs boson in association with an additional scalar boson in the $γγττ$ final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Observed and expected 95% CL upper limits on the cross section for the resonant production of a new scalar particle $\mathrm{X}$ which decays to a SM Higgs boson and a new scalar particle $\mathrm{Y}$, multiplied by the $\mathrm{Y} \to \gamma\gamma$ branching fraction, $\sigma(\mathrm{pp} \to \mathrm{X} \to \mathrm{YH})B(\mathrm{Y} \to \gamma\gamma)$. The limits are shown for different values of $m_\mathrm{X}$ in the range 300-1000 GeV and $m_\mathrm{Y}$ in the range 125-800 GeV.
description: The results of a search for the production of two scalar bosons in final states with two photons and two tau leptons are presented. The search considers both nonresonant production of a Higgs boson pair, $\mathrm{HH}$, and resonant production via a new boson $\mathrm{X}$ which decays either to $\mathrm{HH}$ or to $\mathrm{H}$ and a new scalar $\mathrm{Y}$. The analysis uses up to 138 fb$^{-1}$ of proton-proton collision data, recorded between 2016 and 2018 by the CMS experiment at the LHC at a center-of-mass energy of 13 TeV. No evidence for signal is found in the data. For the nonresonant production, the observed (expected) upper limit at 95% confidence level (CL) on the $\mathrm{HH}$ production cross section is set at 930 (740) fb, corresponding to 33 (26) times the standard model prediction. At 95% CL, $\mathrm{HH}$ production is observed (expected) to be excluded for values of $\kappa_\lambda$ outside the range between -12 (-9.4) and 17 (15). Observed (expected) upper limits at 95% CL for the $\mathrm{X} \to \mathrm{HH}$ cross section are found to be within 160 to 2200 (200 to 1800) fb, depending on the mass of $\mathrm{X}$. In the $\mathrm{X} \to \mathrm{YH}$ production scenario, the observed (expected) upper limits vary between 0.059 -1.2 fb (0.87 -0.68 fb) for the $\mathrm{X} \to \mathrm{Y}(\to\tau\tau)\mathrm{H}(\to\gamma\gamma)$ search. For the $\mathrm{X} \to \mathrm{Y}(\to\gamma\gamma)\mathrm{H}(\to\tau\tau)$ search the observed (expected) upper limits vary between 0.69 -15 fb (0.73 -8.3 fb) in the low $\mathrm{Y}$ mass search, tightening constraints on the NMSSM, and between 0.64 -10 fb (0.70 -7.6 fb) in the high $\mathrm{Y}$ mass search.
DOI: 10.3535/040-t4x-lwv
title: Rhamphospermum arvense (L.) Andrz. ex Besser

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/040-xf4-zae
title: Montia fontana L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/040-y7d-c4y
title: Salix myrsinifolia subsp. myrsinifolia

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-0s4-z9f
title: Salix phylicifolia L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-8mz-zfc
title: Rhynchospora alba (L.) Vahl

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-8nh-382
title: Barbarea stricta Andrz.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-dcn-e76
title: Persicaria amphibia (L.) Gray

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-e2b-wdz
title: Alchemilla filicaulis Buser

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-e3e-85e
title: Eriophorum gracile Roth

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-h6b-dvf
title: Betula pubescens Ehrh.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-haj-sfd
title: Plantae

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/041-w1x-2x4
title: Ranunculus reptans L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/042-5kn-xhq
title: Luzula pilosa (L.) Willd.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.5281/zenodo.17938464
title: Dataset for "Tightly yet Dynamically Bound Aliphatic Guanidinium Ligands for Lead Halide Perovskite Nanocrystals"

description: Lead halide perovskites (LHPs) have disrupted the field of visible-range emitting colloidal semiconductor nanocrystals (NCs) owing to their exceptional emissivity as classical and quantum light sources. Their appeal is countered by the stability challenges arising from inherent lattice softness and labile surface ligand bonding. Recent ligand design efforts have drastically improved the structural integrity of LHP NCs by pursuing strongly and statically bound ligands, as found with zwitterionic headgroups. Here, we venture into a new class of cationic ligands featuring guanidinium headgroups, which combine the compactness of primary ammoniums with the deprotonation resistance of quaternary ammoniums. We reasoned that strong yet dynamic ligand binding offers distinct benefits. A library of aliphatic guanidinium molecules was synthesized and surveyed as capping ligands for CsPbBr3, FAPbBr3, and CsPbI3 NCs, enabling up to 95% photoluminescence quantum yields for bromide compositions. We then compare binding behavior of guanidinium ligands with those of other widely used ligands. Zwitterionic ligands phosphocholines and phosphoethanolamines bind more strongly than sulfobetaines and quaternary ammonium ligands, yet all these headgroups impart relatively static binding with exchange rates below 5 s–1. Primary ammonium ligands are champions in dynamicity but lag behind in ligand-coverage retention and, hence, long-term stability. Guanidinium ligands strike a favorable balance: they match the binding dynamics of primary ammonium ligands while significantly enhancing binding strength, enabling rigorous purification and compatibility with relatively polar solvents such as tetrahydrofuran. We then showcase the benefits of dynamically bound ligands in photocatalytic C–C coupling reactions.
DOI: 10.5281/zenodo.17938465
title: Dataset for "Tightly yet Dynamically Bound Aliphatic Guanidinium Ligands for Lead Halide Perovskite Nanocrystals"

description: Lead halide perovskites (LHPs) have disrupted the field of visible-range emitting colloidal semiconductor nanocrystals (NCs) owing to their exceptional emissivity as classical and quantum light sources. Their appeal is countered by the stability challenges arising from inherent lattice softness and labile surface ligand bonding. Recent ligand design efforts have drastically improved the structural integrity of LHP NCs by pursuing strongly and statically bound ligands, as found with zwitterionic headgroups. Here, we venture into a new class of cationic ligands featuring guanidinium headgroups, which combine the compactness of primary ammoniums with the deprotonation resistance of quaternary ammoniums. We reasoned that strong yet dynamic ligand binding offers distinct benefits. A library of aliphatic guanidinium molecules was synthesized and surveyed as capping ligands for CsPbBr3, FAPbBr3, and CsPbI3 NCs, enabling up to 95% photoluminescence quantum yields for bromide compositions. We then compare binding behavior of guanidinium ligands with those of other widely used ligands. Zwitterionic ligands phosphocholines and phosphoethanolamines bind more strongly than sulfobetaines and quaternary ammonium ligands, yet all these headgroups impart relatively static binding with exchange rates below 5 s–1. Primary ammonium ligands are champions in dynamicity but lag behind in ligand-coverage retention and, hence, long-term stability. Guanidinium ligands strike a favorable balance: they match the binding dynamics of primary ammonium ligands while significantly enhancing binding strength, enabling rigorous purification and compatibility with relatively polar solvents such as tetrahydrofuran. We then showcase the benefits of dynamically bound ligands in photocatalytic C–C coupling reactions.
DOI: 10.3535/042-czr-jlr
title: Salix reticulata L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.
DOI: 10.3535/042-d0z-l7r
title: Cochlearia danica L.

description: Digital Specimen for the physical specimen hosted at Finnish Museum of Natural History.