1-pyrenecarboxylic acid

Pyrenecarboxylic acid [3029-19-4] M 230.3, m 126-127°. Crystd from benzene or 95% EtOH. 

SWCNTs were modified with several water-soluble pyrene derivatives (1-pyreneacetic acid, 1-pyrenecarboxylic acid, 1-pyrenebutyric acid, and 8-hydroxy-l,3,6-pyrenetrisulfonic acid) bearing negatively charged ionic head-groups, to act as anchors to several pyridium headgroups present in a series of water-soluble metalloporphyrins [MP] + (M = Zn, Co, and Fe) [60a]. Interactions between the metalloporphyrins and SWCNTs proceeded through a combination of associative van der Waals (spacer-CNT) and electrostatic interactions (metalloporphyrins-spacer-CNT), as demonstrated by the combination of spectroscopic and surface techniques. 

Pyrene has a nonallowed 0 0 transition (ground state to excited state) that is markedly medium-dependent. Media effects are readily monitored through pyrene s fluorescence vibrational structure [5]. The compounds 1--aminopyrene (1-AP) and 1-pyrenecarboxylic acid (PCA) each possess two chromophores that interact in the excited state the extent of the interaction depends on the media. The lone pair of the amine chromophore of 1-AP acts as an internal switch for photophysics. Previous work [6] showed that the photophysical behavior of 1-AP is dominated by protonation, or blocking, of the lone pair (Figure 30.1). Protonation of the amino group leads to a complex, 1-APH" , that exhibits photophysical properties similar to those of pyrene the free 1-AP system... 

Pyreneacetic acid, P-00304 1-Pyrenebutanoic acid hydrazide, P-00305 1 -Pyrenecarboxaldehyde, P-00306 1-Pyrenecarboxylic acid, P-00307 3-Pyrenecarboxylic acid (obsol.), see P-00307 1-Pyrenedodecanoic acid, P-00308... 

Biphenylol Benzoyl, in B-00211 1-Pyreneacetic acid Me ester, in P-00304 1-Pyrenecarboxylic acid El ester, in P-00307... 

---