NDLI: Optoelectronically mismatched oligophenylethynyl-naphthalenediimide SHJ architectures

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Organic & Biomolecular Chemistry Vol - 8 Issue - 4

Organic & Biomolecular Chemistry Vol - 8 Issue - 3

Organic & Biomolecular Chemistry Vol -7

Organic & Biomolecular Chemistry Vol -6

Organic & Biomolecular Chemistry Vol -5

Organic & Biomolecular Chemistry Vol -4

Organic & Biomolecular Chemistry Vol -3

Organic & Biomolecular Chemistry Vol -2

Optoelectronically mismatched oligophenylethynyl-naphthalenediimide SHJ architectures

Content Provider	Royal Society of Chemistry (RSC)
Author	Maity, Santanu Vauthey, Eric Banerji, Natalie Matile, Stefan Sakai, Naomi Bhosale, Rajesh
Copyright Year	2010
Abstract	The objective of this study was to evaluate the possibility of photoinduced stack/rod electron transfer in surface “zipper” architectures composed of stacks of blue (B) naphthalenediimides (NDIs) along strings of oligophenylethynyl (OPE) rods. The synthesis and characterization of anionic and cationic multichromophoric OPE-B systems are reported. Absorption spectra suggest that in OPE-B systems, planarity and thus absorption and conductivity of the OPE can possibly be modulated by intramolecular stacking of the surrounding NDIs, although interfering contributions from aggregation remain to be differentiated. Among surface architectures constructed with OPE-B and POP-B systems by zipper and layer-by-layer (LBL) assembly, photocurrents generated by OPE-B zippers exhibit the best critical thickness and fill factors. These findings confirm the existence and functional relevance of topologically matching zipper architectures. In OPE-B zippers, OPEs generate much more photocurrent than the blue NDIs. Ultrafast electron transfer from OPEs to NDIs accounts for these photocurrents, providing wavelength-controlled access to rod–stack charge separation, and thus to formal supramolecular n/p-heterojunctions (SHJs). NDI excitation is not followed by the complementary hole transfer to the OPE rod. Scaffolds with higher HOMOs will be needed to integrate blue NDIs into SHJ photosystems.
Starting Page	1052
Ending Page	1057
Page Count	6
File Format	HTM / HTML PDF
ISSN	14770520
Volume Number	8
Issue Number	5
Journal	Organic & Biomolecular Chemistry
DOI	10.1039/b917188f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	String theory Absorption spectroscopy NDI Photocurrent Ope Lawrence Berkeley National Laboratory Zipper
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Biochemistry Physical and Theoretical Chemistry

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