The direct C–H activation of electron-deficient aza-BODIPYs has been effectively achieved via a concise and inexpensive Cu(II)-promoted oxidative C–H/C–H coupling approach. The resulting indole-aza-BODIPY 6b covers a broad spectrum of 429–900 nm with a FWHM of 294 nm in solution and covers a UV-vis-NIR region up to 1100 nm in film.

It is significantly challenging to collect more light and simultaneously avoid dye aggregation in dye-sensitized solar cells (DSSCs). This work addresses the significance of the intensity, rather than just the traditionally emphasized broadness, of the absorption band in developing DSSC sensitizers. With the assistance of calculating the oscillator strength of the first transition, the indoline-conjugated porphyrin sensitizer CM-b is screened out to have an impressively large Qx molar absorptivity and thus an improved light harvesting ability together with suppressed aggregation in DSSCs. As a result, an overall efficiency of 10.7% for iodine-based DSSCs is achieved, which is a record for non-ruthenium iodine-based DSSCs in the absence of a cosensitizer and a coabsorbate.

A palladium-catalyzed regioselective decarboxylative direct C–H arylation of boron dipyrromethenes (BODIPYs) at the 2,6-positions has been developed as a late-stage approach to rapidly assemble a diversity-oriented BODIPY library. With the complement of this protocol, the direct C–H arylation of BODIPYs becomes regiocontrollable at α- and β-positions. A new type of indole-fused BODIPY exhibiting bright red/NIR fluorescence with a large molar extinction coefficient (145 500 M–1 cm–1) and a high quantum yield (71%) has been synthesized for the first time.

A porphyrin-based test paper has been designed and prepared. It can be used to analyze for Al3+ and Fe3+ in aqueous solution. An experiment employing the test paper can help students understand basic principles of spectrophotometry and how spectrophotometry is used in analyzing for metal ions.Keywords: Analytical Chemistry; Coordination Compounds; Demonstrations; Environmental Chemistry; First-Year Undergraduate/General; Laboratory Instruction; Second-Year Undergraduate; Spectroscopy; UV−Vis Spectroscopy; Water/Water Chemistry;

Synthesis, crystal structure and spectra properties of enantiopure and corresponding racemic Cu(II)-dipyridine amido complexes are reported. The different coordination styles result in the unexpected chiral-unrelated color changes between chiral and racemic complexes.Molecular packing in the crystal of the racemic-1. (R,R) and (S,S) molecules pack alternately with intermolecular Cu–O bond length of 2.451 Å.Research Highlights► Chiral-unrelated optical properties could be affected by molecular chirality. ► A racemic and corresponding Enantiopure complex showed different color in crystal. ► The color difference came from the different coordination style of Cu.

It is significantly challenging to collect more light and simultaneously avoid dye aggregation in dye-sensitized solar cells (DSSCs). This work addresses the significance of the intensity, rather than just the traditionally emphasized broadness, of the absorption band in developing DSSC sensitizers. With the assistance of calculating the oscillator strength of the first transition, the indoline-conjugated porphyrin sensitizer CM-b is screened out to have an impressively large Qx molar absorptivity and thus an improved light harvesting ability together with suppressed aggregation in DSSCs. As a result, an overall efficiency of 10.7% for iodine-based DSSCs is achieved, which is a record for non-ruthenium iodine-based DSSCs in the absence of a cosensitizer and a coabsorbate.