Thioxanthone Dioxide Triplet States Have Low Oxygen Quenching Rate Constants.

With few exceptions, triplet excited states of organic molecules, M, are quenched by ground state molecular oxygen, O(XΣ), with rate constants greater than ∼10 M s in fluid solutions. If the energy of the triplet state is above 94 kJ/mol, then such quenching can result in the sensitized production of singlet oxygen, O(aΔ). In the interaction between M and O(XΣ), the magnitudes of both and the yield of the O(aΔ) depend appreciably on mixing with the M-O charge-transfer state.

Evaluation of the systemic and mucosal immune response induced by COVID-19 and the BNT162b2 mRNA vaccine for SARS-CoV-2.

Background: The currently used SARS-CoV-2 mRNA vaccines have proven to induce a strong and protective immune response. However, functional relevance of vaccine-generated antibodies and their temporal progression are still poorly understood. Thus, the central aim of this study is to gain a better understanding of systemic and mucosal humoral immune response after mRNA vaccination with BNT162b2.

Competing photochemical reactions of bis-naphthols and their photoinduced antiproliferative activity.

The photophysical properties and photochemical reactivities of a series of bis-naphthols 4a-4e and bis-anthrols 5a and 5e were investigated by preparative irradiation in CH3OH, fluorescence spectroscopy and laser flash photolysis (LFP). Methanolysis taking place via photodehydration (bis-naphthols: ΦR = 0.04-0.

"Sex in a Relationship" versus "Sex During a One-Night Stand": The Link Between Mental Representations of Consensual Sexuality, Mating Strategies, and Sexual Experience in Heterosexual Women and Men.

Sexual scripts, that is, the mental representations of sexual behavior, are highly influenced by mating strategies and sexual experience. The relationship between these factors and sexual scripts is, however, poorly understood. Therefore, we assessed how long-term (e.

A Binary Mixture of Ionic Liquids as a New Approach for an Experimental Diffusion Correction in the Study of Activated Processes.

A binary system of two ionic liquids, 1-ethyl-3-methylimidazolium and trioctylmethylammonium bis(trifluoromethylsulfonyl)imide ([EMIM][NTf ] and [OMA][NTf ], respectively), with varying molar fractions, is introduced. It allows the dynamic viscosity to remain constant over a range of almost 60 K; this means that any activated process can be studied independent of the temperature dependence of viscosity itself. This principle is proven upon reinvestigation of electron self-exchange kinetics of tetrathiafulvalene by continuous-wave ESR line-broadening experiments.