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The physico\u2010chemical properties of these compounds (MP\u2010Donor and MP\u2010TCBD\u2010Donor) have been investigated using a range of electrochemical, spectroelectrochemical, DFT as well as steady\u2010state and time\u2010resolved spectroscopic techniques. Ground\u2010state charge transfer interactions between the porphyrin and the electron\u2010withdrawing TCBD directly attached to the porphyrin \u03c0\u2010system extended the absorption features well into the near\u2010infrared region. To visualize the photo\u2010events, energy level diagrams with the help of free\u2010energy calculations have been established. Switching the role of porphyrin from the initial electron acceptor to electron donor was possible to envision. Occurrence of photoinduced charge separation has been established by complementary transient absorption spectral studies followed by global and target data analyses. Better charge stabilization in H<jats:sub>2<\/jats:sub>P derived over ZnP derived conjugates, and in phenothiazine derived over aniline derived conjugates has been possible to establish. These findings highlight the importance of the nature of porphyrins and second electron donor in governing the ground and excited state charge transfer events in closely positioned donor\u2010acceptor conjugates.<\/jats:p>","DOI":"10.1002\/chem.202102865","type":"journal-article","created":{"date-parts":[[2021,8,10]],"date-time":"2021-08-10T12:45:47Z","timestamp":1628599547000},"page":"14335-14344","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Charge\u2010Transfer in Panchromatic Porphyrin\u2010Tetracyanobuta\u20101,3\u2010Diene\u2010Donor Conjugates: Switching the Role of Porphyrin in the Charge Separation Process"],"prefix":"10.1002","volume":"27","author":[{"given":"Bijesh","family":"Sekaran","sequence":"first","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology  Indore 453552 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Dawson","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of North Texas  1155 Union Circle, #305070 Denton TX 76203-5017 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Youngwoo","family":"Jang","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of North Texas  1155 Union Circle, #305070 Denton TX 76203-5017 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kusum V.","family":"MohanSingh","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology  Indore 453552 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rajneesh","family":"Misra","sequence":"additional","affiliation":[{"name":"Department of Chemistry Indian Institute of Technology  Indore 453552 India"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Francis","family":"D'Souza","sequence":"additional","affiliation":[{"name":"Department of Chemistry University of North Texas  1155 Union Circle, #305070 Denton TX 76203-5017 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,9,2]]},"reference":[{"key":"e_1_2_7_1_1","volume-title":"Molecular Mechanisms of Photosynthesis.","author":"Blankenship R. 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