Conjugated Naphthalenediimide-Pyridinium Salts in Donor-Acceptor Hybrid Materials for Enhanced Photochromic Properties.

As an emerging class of hybrid materials, donor-acceptor (D-A) hybrid crystals with photoactive organic and inorganic components have gradually become an ideal platform for photochromic materials. Wherein the most available organic components are electron-poor naphthalenediimide, pyridinium, and triazine derivatives, inorganic units are electron-rich polyoxometalates and metal halides. Herein, we introduced pyridinium moieties into the naphthalenediimide core by conjugated bonds so as to increase the electron deficiency of organic species for enhanced photochromic properties.

Effect of educational and psychological intervention on the quality of life of asthmatic patients.

Objective: To evaluate the effects of educational and psychological intervention on the quality of life and psychological status of patients with asthma.

Methods: Asthmatic patients were randomized to study (n = 228) and control (n = 146) groups. Both groups received conventional pharmacotherapy for asthma.