Optically Gated Dissociation of a Heptazinyl Radical Liberates H through a Reactive πσ* State.

Using trianisole heptazine (TAHz) as a monomeric analogue for carbon nitride, we performed ultrafast pump-photolysis-probe transient absorption (TA) spectroscopy on the intermediate TAHzH heptazinyl radical produced from an excited state PCET reaction with 4-methoxyphenol (MeOPhOH). Our results demonstrate an optically gated photolysis that releases H and regenerates ground state TAHz. The TAHzH radical signature at 520 nm had a lifetime of 7.

Criminalised, victimised or other? A reflexive engagement with Queer Criminology utilising a relational pedagogical approach.

Queer Criminology is a newfound area of exploration within the discipline of Criminology, which is uniquely positioned to deal with issues regarding crime and victimisation concerning those from the LGBTQIA+ community and gender diverse/minoritized groups. The field of "Queer Criminology" has become vast and expanding, having explored issues of interpersonal, structural and systematic inequality concerning those from the community and beyond. To this end, narratives of victimisation, trauma and injustice have dominated (and limited) understandings of Queer Criminology.

Local Hydrogen Bonding Determines Branching Pathways in Intermolecular Heptazine Photochemistry.

Heptazine is the molecular core of the widely studied photocatalyst carbon nitride. By analyzing the excited-state intermolecular proton-coupled electron-transfer (PCET) reaction between a heptazine derivative and a hydrogen-atom donor substrate, we are able to spectroscopically identify the resultant heptazinyl reactive radical species on a picosecond time scale. We provide detailed spectroscopic characterization of the tri-anisole heptazine:4-methoxyphenol hydrogen-bonded intermolecular complex (TAHz:MeOPhOH), using femtosecond transient absorption spectroscopy and global analysis, to reveal distinct product absorption signatures at ∼520, 1250, and 1600 nm.