Figure 1 (image) Science China Press Share Print E-Mail Caption The chemical structures of TPB, TPP and TPA, the phosphorescence of TPB/TPP and TPB/TPA crystalline powders, the advantages of these new host-guest RTP systems. Credit ©Science China Press Usage Restrictions Use with credit. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.