NDLI: Synthesis, structure, ultrafast kinetics, and light-induced dynamics of CuHETPHEN chromophores

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Carter, Tyler J. Hong, Jiyun Shelby, Megan L. Mulfort, Karen L. Fransted, Kelly A. Chen, Lin X. Kohler, Lars Hayes, Dugan
Description	Author Affiliation: Kohler L ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov.); Hayes D ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov.); Hong J ( Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.); Carter TJ ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov.); Shelby ML ( Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.); Fransted KA ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov.); Chen LX ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA.); Mulfort KL ( Division of Chemical Sciences and Engineering, Argonne National Laboratory, 9700 South Cass Ave, Argonne, IL 60439, USA. mulfort@anl.gov.)
Abstract	Five heteroleptic Cu(I)bis(phenanthroline) chromophores with distinct variation in the steric bulk at the 2,9-phenanthroline position were synthesized using the HETPHEN method, and their ground and excited state properties are described. Analysis of the crystal structures reveals a significant distortion from tetrahedral geometry around the Cu(I) centre which is attributed to favourable aromatic interactions between the two phenanthroline ligands. Ultrafast and nanosecond transient optical spectroscopies reveal that the excited state lifetime can be tuned across two orders of magnitude up to 74 nanoseconds in acetonitrile by changing the 2,9-substituent from hydrogen to sec-butyl. X-ray transient absorption spectroscopy at the Cu K-edge confirmed Cu(I) oxidation to Cu(II) and revealed a decrease of the Cu–N bond lengths in the excited state. The ground and excited state characterization presented here will guide the integration of CuHETPHEN chromophores into complex electron donor–acceptor architectures.
ISSN	14779226
Issue Number	24
Journal	Dalton Trans.
Volume Number	45
e-ISSN	13645447
Language	English
Publisher	Royal Society of Chemistry
Publisher Date	2016-06-14
Publisher Place	Great Britain (UK)
Access Restriction	Subscribed
Subject Keyword	Chemistry
Content Type	Text
Resource Type	Article
Subject	Inorganic Chemistry

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in