David B. Cordes
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View article: A polarity-mismatched photocatalytic cross-coupling enables diversity-oriented synthesis of aza-heterocycles
A polarity-mismatched photocatalytic cross-coupling enables diversity-oriented synthesis of aza-heterocycles Open
Diversity-oriented synthesis (DOS) is an attractive approach for the design of functional molecules, with (homo)allylic amines representing a particularly attractive DOS platform. Herein, we demonstrate the application of newly developed p…
View article: 2-(Difluoroboryloxy)benzamide
2-(Difluoroboryloxy)benzamide Open
The title compound has been fully characterised by NMR for the first time. Fully assigned 1H and 13C NMR spectra, and the X-ray structure of two different polymorphs are presented. The polymorphs show similar molecular geometries but exhib…
View article: A Blue Emissive Heavy Atom-Free Multiresonant Thermally Acti-vated Delayed Fluorescent Emitter Shows Ultra-fast Reverse In-tersystem Crossing
A Blue Emissive Heavy Atom-Free Multiresonant Thermally Acti-vated Delayed Fluorescent Emitter Shows Ultra-fast Reverse In-tersystem Crossing Open
One of the key factors affecting the stability and efficiency roll-off of organic light-emitting di-odes is the rate constant of reverse intersystem crossing (kRISC), which is itself influenced by the magnitude of the singlet-triplet energ…
View article: Single-Crystal X-Ray Diffraction Studies of Derivatives of Phenolphthalein (3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one)
Single-Crystal X-Ray Diffraction Studies of Derivatives of Phenolphthalein (3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one) Open
An investigation of the molecular structure of a series of phenolphthalein derivatives is presented. The X-ray structures of thymolphthalein, 2,5-dimethylphenolphthalein, and 2,6-dimethylphenolphthalein have been determined for the first t…
View article: 2-Fluorobenzyl ( <i>Z</i> )-2-(5-chloro-2-oxoindolin-3-ylidene)hydrazine-1-carbodithioate dimethyl sulfoxide monosolvate
2-Fluorobenzyl ( <i>Z</i> )-2-(5-chloro-2-oxoindolin-3-ylidene)hydrazine-1-carbodithioate dimethyl sulfoxide monosolvate Open
In the title solvate, C 16 H 11 ClFN 3 OS 2 ·C 2 H 6 OS, the C=N bond adopts a Z -configuration facilitating the formation of an intramolecular N—H...O hydrogen bond to the carbonyl O atom in an S (6) loop. The dimethylsulfoxide solvent mo…
View article: 3-(4-Hydroxy-2,3,5-trimethylphenyl)-3-(4-hydroxyphenyl)isobenzofuran-1(3H)-one
3-(4-Hydroxy-2,3,5-trimethylphenyl)-3-(4-hydroxyphenyl)isobenzofuran-1(3H)-one Open
3-(4-hydroxy-2,3,5-trimethylphenyl)-3-(4-hydroxyphenyl)isobenzofuran-1(3H)-one is a derivative of the well-known acid/base indicator, phenolphthalein. We report the synthesis and the molecular structure of the title compound as determined …
View article: Bowl-Shaped Corannulene Donor–Acceptor Emitter Unlocks Host-Modulated Thermally Activated Delayed Fluorescence/Room Temperature Phosphorescence for Oxygen Sensing
Bowl-Shaped Corannulene Donor–Acceptor Emitter Unlocks Host-Modulated Thermally Activated Delayed Fluorescence/Room Temperature Phosphorescence for Oxygen Sensing Open
View article: X-Ray Structures of Some Heterocyclic Sulfones
X-Ray Structures of Some Heterocyclic Sulfones Open
1,4-Thiazine S,S-dioxide 1, the cis- and trans-isomers 2 and 3 of its precursor 2,6-diethoxy-1,4-oxathiane S,S-dioxide, and diethyl 2,3-dihydro-1,4-thiazine-3,5-dicarboxylate S,S-dioxide 4 have been fully characterised, both in solution by…
View article: Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles (Adv. Sci. 29/2025)
Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles (Adv. Sci. 29/2025) Open
View article: Two-Photon Excited Circularly Polarized Luminescence of Hetero[9]helicene with Multiresonant Thermally Activated Delayed Fluorescence
Two-Photon Excited Circularly Polarized Luminescence of Hetero[9]helicene with Multiresonant Thermally Activated Delayed Fluorescence Open
The development of organic semiconductors exhibiting strong CPL, 2PA, high photoluminescence quantum yield, and long-lived delayed fluorescence would be of significant value as deep tissue penetrating bioimaging agents showing high resolut…
View article: Renewable Solvents for Diels–Alder/Cheletropic Reaction Sequences: Preparation of Pentaphenylbenzene and 1,2,4-Triphenyltriphenylene
Renewable Solvents for Diels–Alder/Cheletropic Reaction Sequences: Preparation of Pentaphenylbenzene and 1,2,4-Triphenyltriphenylene Open
Polycyclic aromatic compounds can often be made by a sequence featuring an initial Diels–Alder [4 + 2] cycloaddition reaction, followed by cheletropic extrusion of carbon monoxide. These reactions normally require heating the diene and die…
View article: 3′H-Spiro[dibenzo[c,h]xanthene-7,1′-isobenzofuran]-3′-one
3′H-Spiro[dibenzo[c,h]xanthene-7,1′-isobenzofuran]-3′-one Open
Target compound 3′H-spiro[dibenzo[c,h]xanthene-7,1′-isobenzofuran]-3′-one (1) has long been known to be a by-product obtained from the preparation of naphtholphthalein. The structure of compound 1 was elucidated in the early 20th century; …
View article: Advancing intercalation strategies in layered hybrid perovskites by bringing together synthesis and simulations
Advancing intercalation strategies in layered hybrid perovskites by bringing together synthesis and simulations Open
View article: Saturated Carbazole-Embedded BN-Aromatic Systems as Narrowband Sky-Blue Emitters
Saturated Carbazole-Embedded BN-Aromatic Systems as Narrowband Sky-Blue Emitters Open
Due to their rigid structure and short-range charge transfer emissive excited states multiresonant thermally activated delayed fluorescence (MR-TADF) emitters provide exceptional color purity due to their narrowband emission. Many examples…
View article: Structural Polytypism in B-Site-Deficient Azetidinium-Based Pnictogen Halide Hexagonal Perovskites
Structural Polytypism in B-Site-Deficient Azetidinium-Based Pnictogen Halide Hexagonal Perovskites Open
Azetidinium (Az+)-based antimony and bismuth organic-inorganic hybrid halide B-site-deficient perovskite analogues Az3B2X9 (B3+ = Sb, Bi; X- = Cl, Br, I) were systematically…
View article: Cycloadditions as a Sweet Route to ‘Double C-Glycosylation’
Cycloadditions as a Sweet Route to ‘Double C-Glycosylation’ Open
Pharmaceuticals, such as the antibiotic erythromycin, and sodium-dependent glucose transporter (SGLT1 & SGTL2) inhibitors such as Bexagliflozin (diabetes) and Sotagliflozin (heart disease), are often sugar-decorated (glycosylated). Glycosy…
View article: Organosolv processing of Sitka spruce sawdust: large scale preparation of native-like lignin and lignin <sup>OX</sup> for valorisation
Organosolv processing of Sitka spruce sawdust: large scale preparation of native-like lignin and lignin <sup>OX</sup> for valorisation Open
Controlled oxidation of lignin from Sitka spruce.
View article: Bowl-Shaped Corannulene Donor-Acceptor Emitter Unlocks Host-Modulated TADF/RTP for Oxygen Sensing
Bowl-Shaped Corannulene Donor-Acceptor Emitter Unlocks Host-Modulated TADF/RTP for Oxygen Sensing Open
While the study of planar polycyclic aromatic hydrocarbon (PAH) is rich and their properties are well described, the exploitation of curved PAHs, such as corannulene derivatives, is less established. We report the first example of a corann…
View article: Chiral Selenium‐Integrated Multi‐Resonant Thermally Activated Delayed Fluorescent Emitters Showing Improved Reverse Intersystem Crossing Rate
Chiral Selenium‐Integrated Multi‐Resonant Thermally Activated Delayed Fluorescent Emitters Showing Improved Reverse Intersystem Crossing Rate Open
Nitrogen/carbonyl (N/C═O) based multi‐resonant thermally activated delayed fluorescence (MR‐TADF) emitters are attractive due to their bright, narrowband emission and the ease with which they can be synthesized. However, their photophysics…
View article: Chiral Selenium‐Integrated Multi‐Resonant Thermally Activated Delayed Fluorescent Emitters Showing Improved Reverse Intersystem Crossing Rate
Chiral Selenium‐Integrated Multi‐Resonant Thermally Activated Delayed Fluorescent Emitters Showing Improved Reverse Intersystem Crossing Rate Open
Nitrogen/carbonyl (N/C═O) based multi‐resonant thermally activated delayed fluorescence (MR‐TADF) emitters are attractive due to their bright, narrowband emission and the ease with which they can be synthesized. However, their photophysics…
View article: Diisopropyl (E)-(1-Hydroxy-3-phenylallyl)phosphonate
Diisopropyl (E)-(1-Hydroxy-3-phenylallyl)phosphonate Open
We report the synthesis and the molecular structure as determined by single-crystal X-ray diffraction of diisopropyl (E)-(1-hydroxy-3-phenylallyl)phosphonate. The compound was fully characterised by 1H, 13C, and 31P NMR spectroscopy, IR sp…
View article: Isothiourea‐Catalysed Acylative Kinetic and Dynamic Kinetic Resolution of Planar Chiral Paracyclophanols
Isothiourea‐Catalysed Acylative Kinetic and Dynamic Kinetic Resolution of Planar Chiral Paracyclophanols Open
The development of synthetic methods for the catalytic enantioselective preparation of planar chiral paracyclophane derivatives is of considerable interest to the synthetic community. To date, relatively few successful and effective organo…
View article: Isothiourea‐Catalysed Acylative Kinetic and Dynamic Kinetic Resolution of Planar Chiral Paracyclophanols
Isothiourea‐Catalysed Acylative Kinetic and Dynamic Kinetic Resolution of Planar Chiral Paracyclophanols Open
The development of synthetic methods for the catalytic enantioselective preparation of planar chiral paracyclophane derivatives is of considerable interest to the synthetic community. To date, relatively few successful and effective organo…
View article: A Three Boron doped B/O/N Multi-Resonant TADF Emitter for Improved Reverse Intersystem Crossing Rate and Efficient Pure Blue Organic Light Emitting Diodes
A Three Boron doped B/O/N Multi-Resonant TADF Emitter for Improved Reverse Intersystem Crossing Rate and Efficient Pure Blue Organic Light Emitting Diodes Open
Multiresonant thermally activated delayed fluorescence (MR-TADF) compounds exhibit significant potential as emitters in organic light-emitting diodes (OLEDs) due to their bright, narrowband emission, which provides a solution to the color …
View article: Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles
Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles Open
Organic biluminescence, the simultaneous emission from both the singlet and triplet excited state manifolds, is a rare and incompletely understood emission process. However, biluminescent compounds have wide‐reaching applications, such as …
View article: 2′,7′-Dimethyl-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one
2′,7′-Dimethyl-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one Open
A synthetic route to 2′,7′-dimethyl-3H-spiro[isobenzofuran-1,9′-xanthen]-3-one has been described using methanesulfonic acid in place of reagents described in protocols from the early 20th century. A full NMR assignment has been made and X…
View article: <i>tert</i>-Butyl [(4-fluoro-3-isopropoxyisoxazol-5-yl)methyl](phenylsulfonyl)carbamate
<i>tert</i>-Butyl [(4-fluoro-3-isopropoxyisoxazol-5-yl)methyl](phenylsulfonyl)carbamate Open
The title compound, C 18 H 23 FN 2 O 6 S, a new derivative of a fluoroisoxazole containing sulfonamide functionality has been structurally characterized. The C—S—N—C ipr and C—S—N—C carb (ipr = 3-isopropoxyisoxazole, carb = carbamate) tors…
View article: A Very Readily Prepared Ligand for Rhodium Catalyzed Propene Hydroformylation
A Very Readily Prepared Ligand for Rhodium Catalyzed Propene Hydroformylation Open
In the search for an easy‐to‐make ligand that would enable Rh catalyzed hydroformylation of propene to favor the branched aldehydes, iso ‐butanal, bis ‐phosphonites and bis ‐phosphoramidites were designed. Catalysts derived from bis ‐phosp…
View article: It Matters Where the Heavy Atom Is Placed: Optimizing the Spin–Orbital Coupling in Multiresonant TADF (MR‐TADF) Emitters and Its Impact on OLED Performance
It Matters Where the Heavy Atom Is Placed: Optimizing the Spin–Orbital Coupling in Multiresonant TADF (MR‐TADF) Emitters and Its Impact on OLED Performance Open
This study explores the impact of the regioisomerism of a heavy chalcogen atom on the photophysical properties of multi‐resonant thermally activated delayed fluorescence (MR‐TADF) materials. Two pairs of isomeric MR‐TADF emitters containin…
View article: (E,E)-1,5-Diethoxy-1,5-diphenylpenta-1,4-dien-3-one
(E,E)-1,5-Diethoxy-1,5-diphenylpenta-1,4-dien-3-one Open
The title compound has been fully characterised for the first time. Fully assigned 1H and 13C NMR spectra and the X-ray structure are presented.