Ivy: Dull dull dull dull dull dull dull dull dull dull dull dull dull. Posey: No, you're not. Ivy: Not me! The flowers. I planted all these carnations months ago and I thought they'd be colourful ...

School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing 400715, China ...