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https://www.selleckchem.com/products/nvl-655.html While many key photophysical features are understood for electronic communication between chromophores in neutral compounds, there is limited information on the effect of charges in practically relevant ionic chromo/fluorophores. Here we have chosen positively charged rhodamines and prepared a selection of homo- and heterodimers with alkyl or π-conjugated, acetylenic bridges. Protonated molecules were transferred as isolated ions to gas phase where there is no solvent screening of charges, and fluorescence spectra were measured with a custom-made ion-trap setup. Our work reveals strong polarization of the π-spacer (induced dipole/quadrupole) when it experiences the electric field from one/ two dyes. Hence, π-spacers provide efficient shielding of charges by reducing the Coulomb interaction, whereas two dye cations polarize each other when connected by an alkyl. The screening influences the Förster resonance energy transfer efficiency that relies on the dipole-dipole interaction. Cognitive-behavioural models suggest that vicarious illness experiences precipitate health anxiety; however, this assumption is largely untested. This study aimed to (a) compare the severity of health anxiety and rates of clinical health anxiety, Illness Anxiety Disorder (IAD), and Somatic Symptom Disorder (SSD) in participants with and without a loved one with cancer, and (b) determine the predictors of health anxiety severity in participants with vicarious cancer experiences. Participants with (n = 142) and without (n = 65) vicarious cancer experiences completed an online battery of questionnaires assessing the severity and cognitive, physiological, and behavioural components of health anxiety. Participants reporting clinical levels of health anxiety completed a diagnostic telephone interview to assess for IAD and SSD. Severity and rates of clinical health anxiety, IAD, and SSD did not differ between groups. Participants with a vicarious ex

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